With Compensating Features Patents (Class 318/632)
  • Patent number: 11975452
    Abstract: A motion control method is provided. The motion control method comprises: obtaining a sequence of motion parameters of a joint; interpolating the sequence of motion parameters to obtain an interpolation parameter sequence; and calculating driving parameters of a motion component based on the interpolation parameter sequence to drive the motion component to move. According to the motion control method, only a few of motion parameters need to be set by a user, and a lot of motion parameters can be obtained by interpolation, which make it possible for a motor or a robot to achieve smooth operation while a workload for the user is kept to be lower. A motion control device, system, and storage medium are also provided.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: May 7, 2024
    Assignee: MegaRobo Technologies Co., Ltd.
    Inventor: Yan Zhang
  • Patent number: 11964351
    Abstract: Provided is a technique capable of suitably determining screw fastening failure. A screw fastening failure determination device (10) includes: a speed acquisition unit (13) which acquires an axial speed of a screw driver or a speed feature value relating to the speed; and a failure determination unit (14) which determines, in a temporary seating process, that a screw fastening has failed on the basis of the axial speed or the speed feature value at a prescribed timing.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: April 23, 2024
    Assignee: OMRON Corporation
    Inventors: Masayuki Sugioka, Tatsuya Sasaki, Koji Nishigaki, Takanori Shibutani
  • Patent number: 11949363
    Abstract: Disclosed herein is a motor driver circuit including a first output terminal to be connected to a first end of a to-be-driven motor via a sense resistor, a second output terminal to be connected to a second end of the motor, an error detector that generates an error signal, an A/D converter that obtains a digital signal, a compensator that generates a voltage command value, a D/A converter that converts the voltage command value to an analog control signal, a pulse width modulator that generates a first pulse and a second pulse, and an output stage that generates a first driving voltage and a second driving voltage. During a first mode, the compensator uses the error signal obtained by the A/D converter at a negative edge timing of the first pulse, for the error signal at a positive edge timing of the second pulse.
    Type: Grant
    Filed: January 31, 2023
    Date of Patent: April 2, 2024
    Assignee: ROHM Co., LTD.
    Inventor: Hisashi Sugie
  • Patent number: 11921487
    Abstract: A system and method for manufacturing a component is provided that includes a CNC machine tool, a correction module, and a system controller. The CMM module is controllable to determine a set of multi-axis coordinates surface points on the component. The correction module is in communication with the CMM module and stored reference inspection data. The system controller is in communication with the CNC machine tool, the correction module, and stored instructions. The instructions when executed cause the system controller to: a) control the CNC machine tool to modify a surface of the component; b) control the CMM module to determine multi-axis coordinates for surface points; c) determine surface position variances using the reference inspection data and the multi-axis coordinates; d) determine if surface position variances exceed a threshold; and e) create correction action instructions for controlling the CNC machine if surface position variances exceed the threshold.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: March 5, 2024
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Rachid Guiassa, Mizanur Rahman, Pierre-Alexandre Lafreniere, Martin Perron, Luc Sauve
  • Patent number: 11919158
    Abstract: A joint unit that is reduced in size including a plurality of angle detection mechanisms. A joint unit including an input-side support member for a rotationally driven input shaft, a decelerator that decelerates the input shaft to provide a deceleration output shaft, an output rotating body coupled to the deceleration output shaft including a strain generating portion that generates strain due to rotation transmitted by the deceleration output shaft, and an associated rotating body that is coupled to a output-side portion of the strain generating portion of the output rotating body to rotate together with the output rotating body disposed in a space between the input-side support member and an input-side portion of the strain generating portion of the output rotating body.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: March 5, 2024
    Assignee: TOKYO ROBOTICS INC.
    Inventors: Yuki Matsuo, Yoshihiro Sakamoto
  • Patent number: 11888431
    Abstract: A method includes driving a selected motor winding to be in a tri-state during a time interval having a finite time length value of a time window, sensing a zero-crossing (ZC) of an oscillating back electromotive force induced in the motor winding during the time window in which the motor winding is in the tri-state, and producing a ZC sensing signal, which has a first edge at a first time instant at the sensed ZC and a second edge at a second time instant separated from the first time instant by a half oscillation of the oscillating back electromotive force, detecting a phase of a current flowing in the motor winding at a time instant time-shifted with respect to the second time instant of the second edge of the ZC sensing signal, and adjusting the finite time length value based on the detected phase of the current.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: January 30, 2024
    Assignee: STMicroelectronics S.r.l.
    Inventor: Ezio Galbiati
  • Patent number: 11888420
    Abstract: Disclosed is a method for control loop performance monitoring in a variable frequency drive. A set of data is inputted to one or more control loop performance monitoring algorithms comprised in the variable frequency drive, wherein the set of data comprises at least a measured value of a process variable, a target value for the process variable, a set of controller input parameters, and a controller output. An output from each of the one or more control loop performance monitoring algorithms is obtained based at least partly on the set of data. One or more key performance indicator values indicative of control loop performance are determined based at least partly on the output from each of the one or more control loop performance monitoring algorithms. The set of controller input parameters is adjusted based at least partly on the one or more key performance indicator values.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: January 30, 2024
    Assignee: ABB Schweiz AG
    Inventors: Sten Grüner, Vesa Mäkelä
  • Patent number: 11874104
    Abstract: An apparatus for transferring an optical instrument, includes: a transferring block, wherein the optical instrument is coupled to a front surface thereof; a fixed block disposed at a rear side of the transferring block and coupled to a granite surface plate; a wedge stage module disposed on the fixed block to move the transferring block in a vertical direction; a vertical guide disposed at a side end of the transferring block to guide the transferring block in the vertical direction; and a horizontal stage module connected between the wedge stage module and the transferring block to guide a movement in a horizontal direction.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: January 16, 2024
    Assignee: AUROS TECHNOLOGY, INC.
    Inventors: Dea Kyung Won, So Yeon Yoon
  • Patent number: 11826900
    Abstract: A manipulation device and a manipulation system of a simpler configuration. A manipulation device includes an input part configured to receive an input of an operational instruction by an operator in order to operate a manipulating target, and a speaker configured to receive a signal based on vibration detected at the manipulating target and generate vibration based on the received signal. The vibration generated by the speaker is transmitted to the operator through at least a part of the input part.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: November 28, 2023
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Nobuyasu Shimomura, Masayuki Kamon, Hideyuki Ryu
  • Patent number: 11812858
    Abstract: The programmable rocking bed includes a mattress support box, a plurality of jacks, a base box frame, a mattress, a headboard, a footboard, a controller, a plurality of light strips, and one or more sound systems. The mattress support box may be position agile via the activation of the plurality of jacks. The plurality of jacks may be operable to create a static or dynamic repositioning of the mattress support box.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: November 14, 2023
    Inventor: Clay Plemmons
  • Patent number: 11804789
    Abstract: A drive system (500) includes a power converter (510) with power modules (312) supplying power to one or more output phases (A, B, C), a central control system (512) in communication with the power converter (510) and controlling operation of the power modules (312), wherein the central control system (512) comprises an advanced protection module (APM 514) configured via executable instructions to receive input data from an electrical load (520) operably coupled to the one or more output phases (A, B, C) utilizing power converter feedback from the electrical load (520), determine one or more operating conditions of the electrical load (520) based on the input data; and output one or more protection parameters based on a determined operating condition of the electrical load (520) for protecting the electrical load (520).
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: October 31, 2023
    Assignee: Siemens Aktiengesellschaft
    Inventors: Neal Clements, Daniel Grasinger, Elena V Koneva, John Channing Bousfield, III
  • Patent number: 11789045
    Abstract: A current sensing circuit includes a filtering circuit, an amplifier, a first resistor, a first transistor and a second transistor. The filtering circuit is coupled to two terminals of a sensing resistor. The amplifier has a first input terminal, a second input terminal and an output terminal. The second input terminal is coupled to the filtering circuit. The first resistor is coupled between the filtering circuit and the first input terminal of amplifier. A control terminal of the first transistor is coupled to the output terminal of amplifier, and its first terminal is coupled to the first input terminal of amplifier and its second terminal is grounded through a second resistor. A control terminal of the second transistor is coupled to the output terminal of amplifier, and its first terminal is coupled to the second input terminal of amplifier and its second terminal is grounded through a third resistor.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: October 17, 2023
    Assignee: UPI SEMICONDUCTOR CORP.
    Inventors: Chao-Chung Huang, Kuo-Jen Kuo, Yi-Xian Jan
  • Patent number: 11784595
    Abstract: To provide a controller for AC rotary electric machine and an electric power steering apparatus which can superimposes a cancellation current for canceling the torque ripple component on the winding current in feedforward manner and cancel the torque ripple component. A controller for AC rotary electric machine calculates an oscillation voltage command value of q-axis which has the same frequency as the torque ripple component; calculates a reverse phase of the torque ripple component based on the current information and the magnetic pole position; calculates a correction phase corresponding to the phase delay of the actual current with respect to the oscillation voltage command value of q-axis; and sets a phase of the oscillation voltage command value of q-axis to a phase obtained by advancing the reverse phase of the torque ripple component by the correction phase.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: October 10, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Masahiko Orii, Genki Fujii, Yu Hirotani
  • Patent number: 11781941
    Abstract: System and methods for characterizing a response of a structure-under-test to applied excitation forces using a test fixture. The fixture is selectively coupleable to the structure-under-test and is configured to hold the structure-under-test at a known position and in a known orientation relative to the fixture. A plurality of excitation devices and response sensors are coupled to the fixture. Excitation forces applied to the fixture by the excitation devices are conveyed by the fixture to the structure-under-test and each response sensor measures a dynamic response indicative of a response of the structure-under-test and the fixture to the applied excitation force. A controller receives response sensor data and applies a mathematical coordinate transformation to project the forces and moments corresponding to the applied excitation and the measured dynamic responses to a target point of the structure-under-test and to calculate a system response function based at least in part on the projection.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: October 10, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Michael Sturm, Kevin Wienen, Michael Yankonis
  • Patent number: 11747785
    Abstract: Control commands for a control device of a machine define a sequence of successive sections of ideal position target values for a position-controlled shaft of the machine. The ideal position target values either increase or decrease monotonically within the sections, but the direction of the monotony changes from section to section. A position controller determines actuating signals for an actuator from position target values resulting from ideal position target values, additional target values and position actual values. Within sections, the additional target values are positive (negative) when the ideal position target values increase (decrease) monotonically. The additional target values have a first component dependent exclusively on a position difference, with the magnitude of the first component increasing as the magnitude of the position difference increases, first strictly monotonically and then at least monotonically.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: September 5, 2023
    Assignee: Siemens Aktiengesellschaft
    Inventor: Andreas Klotzek
  • Patent number: 11691282
    Abstract: A friction compensation device of the present disclosure includes a drive torque calculation unit that calculates output torque of a transmission mechanism from a motor's position, velocity, and acceleration, the transmission mechanism being connected to a motor via a shaft to transmit the driving force of the motor, and a friction estimate value calculation unit that calculates a friction estimate value that is an estimate value of a friction force on the shaft. The friction estimate value calculation unit includes a friction correction value calculation unit that calculates a friction correction value to correct the friction force on the shaft, in accordance with the output of the drive torque calculation unit.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: July 4, 2023
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kiyoshi Maekawa, Akio Saito, Yuma Isobe
  • Patent number: 11667000
    Abstract: A cutting machine having a work surface, configured to accommodate at least one object to be cut, a working group, which is movable above the work surface including a receptacle device for accommodating a replaceable cutting tool, and a processing unit for controlling the cutting machine and storage capacity for providing a database, characterized by a first sensor unit, which is designed to detect individual items of identification information of the cutting tool and to provide detected items of identification information to the processing unit, wherein the processing unit is designed to recognize the cutting tool based on the items of identification information, to detect operating data of the cutting tool and store these data in the database, wherein the operating data comprise at least one operating time of the cutting tool, and to carry out operational monitoring of the cutting tool based on the operating data.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: June 6, 2023
    Assignee: ZÜND SYSTEMTECHNIK AG
    Inventors: Leo Rempfler, Markus Göldi, Fabian Steiger, Simon Jann
  • Patent number: 11648067
    Abstract: A medical manipulator according to one or more embodiments may include: a first manipulator arm with multi-degree of freedom that holds a medical tool at a distal end portion thereof; a second manipulator arm with multi-degree of freedom that holds a medical tool at a distal end portion thereof; an arm base that holds base end portions of the first and second manipulator arms; a movement mechanism configured to move the base end portion of the first manipulator arm with respect to the arm base to change a distance between the base end portion of the first manipulator arm and the base end portion of the second manipulator arm; and a positioner configured to move the arm base and position the arm base in place.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: May 16, 2023
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, MEDICAROID CORPORATION
    Inventors: Yasuhiko Hashimoto, Toshiaki Yoshida, Wataru Doi
  • Patent number: 11644295
    Abstract: A metrology device with automated compensation and/or alert for orientation errors. The device may include a processor, a probe portion and at least one orientation sensor. The probe provides an output representative of a raw measurement of a characteristic of a device under test and the orientation sensor provides a sensor output representative of an orientation of the metrology device to the device under test. The processor applies a correction factor to the raw measurement in response to the sensor output to establish a compensated measurement to compensate for misalignment of the metrology device to the device under test. In addition, or alternatively, the processor provides an alert indicating the existence and/or extent of the misalignment.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: May 9, 2023
    Assignee: The L.S. Starrett Company
    Inventor: Jeffrey M. Wilkinson
  • Patent number: 11629775
    Abstract: A parameter setting method includes a parameter value changing step of, when the magnitude of a deviation that is a difference between a command position and an actual position of a movable portion is greater than or equal to a prescribed value during operation of an active damper, selecting an unselected set of candidate values from among a plurality of sets of candidate values and changing the values of respective types of parameters of the active damper to the selected set of candidate values, and when the magnitude of the deviation is less than the prescribed value, not changing the values of the respective types of the parameters. After the parameter value changing step is finished, the parameter value changing step is repeated until the magnitude of the deviation becomes less than the prescribed value.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: April 18, 2023
    Assignee: FANUC CORPORATION
    Inventors: Zhenxing Li, Hiroshi Minami
  • Patent number: 11602838
    Abstract: A process for monitoring backlash in a gear of a joint of an industrial robot, wherein said joint includes a first joint body and a second joint body coupled together with the possibility of moving with respect to one other, a motor provided with an encoder, and a motion-transmission assembly designed to transmit the torque generated by said motor to said second joint body to bring about a movement of said second joint body with respect to said first joint body, said transmission assembly comprising said gear. The process is characterized in that the signal of the encoder of the motor for driving the joint is used without providing any additional sensor specifically dedicated to monitoring of the backlash.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: March 14, 2023
    Assignee: Comau S.p.A.
    Inventors: Eliana Giovannitti, Nicola Campagna
  • Patent number: 11578737
    Abstract: A milling machine may have a frame, ground engaging tracks that support the frame, and an actuator that adjusts a height of the frame relative to the track. The milling machine may have a control valve that selectively controls a flow of fluid into or out of the actuator based on the current supplied to the control valve. The milling machine may have a controller that determines the amount of current required to operate the actuator at a nominal actuator velocity and supplies that current to the control valve. The controller determines a measured actuator velocity based on a time required to extend or retract the actuator by a predetermined length, and adjusts the amount of current based on the measured and nominal actuator velocities. The controller also supplies the adjusted amount of current to the control valve to adjust the height of the frame relative to the track.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: February 14, 2023
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Nathaniel S. Doy, Hyppolite Kuissi, Lee M. Hogan
  • Patent number: 11569709
    Abstract: A motor drive device includes: a position command generator which generates a position command; a damping filter unit which includes one or more stages of damping filters which reduce vibration of a device including a load and a motor, applies, to a position command, a damping filter determined based on a model parameter corresponding to a model of the device, and outputs a filtered position command to which the damping filter has been applied; a servo controller which gives a torque command to the motor based on the filtered position command; a low-pass filter unit; a parameter estimation unit which estimates the model parameter from the rotational speed and the torque command of the motor which have passed through the low-pass filter unit; and a vibration determination unit which determines presence or absence of vibration in the model.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: January 31, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuya Sakamoto, Ken'ichi Suzuki, Hiroshi Fujiwara
  • Patent number: 11555857
    Abstract: A method and an apparatus are described for monitoring the wear of a long stator linear motor system comprising at least one motor train with stators and at least one transport vehicle that is driven electromagnetically thereby. Due to the fact that a force exerted electromagnetically and/or mechanically upon said motor train by the transport vehicle transverse to the latter's direction of transport or a differential force exerted in such manner by the transport vehicle upon two oppositely disposed motor trains is measured using sensors, changes in the forces between the motor train and the vehicle caused by dimensional tolerances and/or wear can be detected in order to prevent a malfunction of the track switch.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: January 17, 2023
    Assignee: KRONES AG
    Inventors: Thomas Kiendl, Hartmut Davidson, Stefan Elsperger
  • Patent number: 11545381
    Abstract: Provided is a substrate transferring method which is capable of accurately mounting a substrate at a desired rotation angle. In order to eliminate a misalignment of a wafer W in a rotational direction in a vacuum process chamber, which is caused by a variation in a transfer distance of the wafer W, the wafer W is mounted on a stage while being offset from the center of the stage in a load lock chamber and an angle of rotation of the wafer W with respect to a fork when a transfer arm receives the wafer W is changed.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: January 3, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventor: Keisuke Kondoh
  • Patent number: 11530720
    Abstract: System for controlling at least one active magnetic bearing equipping a rotating machine comprising a rotor and a stator, at least one means for measuring the radial positions of the rotor as a function of the signal from at least one position sensor, and at least two control loops of the active magnetic bearing as a function of the radial positions of the rotor, each control loop of the magnetic bearing being provided with at least one synchronous filter as a function of the rotation speed, and an extended Kalman filter for determining the rotation speed of the rotor with respect to the stator receiving as input, from position sensors, measurements of radial position of the rotor and as a function of measurements of radial position of the rotor performed over a predetermined time at zero rotor rotation speed.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: December 20, 2022
    Assignee: SKF Magnetic Mechatronics
    Inventor: Francis Bienaime
  • Patent number: 11525664
    Abstract: A calibration method includes the steps of placing a structure to be measured at a first position, measuring a first distance from a laser interferometer to a reflector, and measuring first coordinates of a body to be measured, moving the structure to be measured to a second position, measuring a second distance from the laser interferometer to the reflector and measuring second coordinates of the structure to be measured with the coordinate measuring apparats, while the structure to be measured is at the second position, determining a scale error of the reference instrument, mounting the reference instrument, measuring the interval between objects to be measured, and calculating a calibration value of the interval between the objects to be measured.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: December 13, 2022
    Assignee: MITUTOYO CORPORATION
    Inventor: Masayuki Nara
  • Patent number: 11513155
    Abstract: A method and device of determining a fault condition in a synchronous motor including a rotor provided with damper bars and an end ring to which the damper bars are mechanically connected thereby forming a damper cage, wherein the method includes: obtaining a first measurement of an end ring current from a first location along the end ring, processing the first measurement to thereby obtain a processing result, and determining whether a fault condition is present in the synchronous motor based on the processing result.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: November 29, 2022
    Assignee: ABB Schweiz AG
    Inventors: Pedro Rodriguez, Subrat Sahoo, Cajetan Pinto
  • Patent number: 11507315
    Abstract: According to one embodiment, a magnetic disk device includes a first disk, a second disk, a first head, a second head, a first actuator including the first head, a second actuator including the second head, a first arithmetic unit executing a first reordering process of a command stored in a first queue corresponding to the first actuator, and a second arithmetic unit executing a second reordering process of a command stored in a second queue corresponding to the second actuator, the first arithmetic unit executing the second reordering process, the second arithmetic unit executing the first reordering process.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: November 22, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Daisuke Sudo
  • Patent number: 11480939
    Abstract: The disclosure is a rotation center measurement method of a multi-axis processing machine which relatively moves tables on which a work piece is placed and a tool for processing the work piece by control of rotation axes based on a processing program, and the rotation center measurement method is characterized to include: a processing program acquisition step in which the processing program is acquired; a processing program analysis step in which command angles of tool postures are read from the processing program and analyzed, and measurement angles are calculated based on the analysis results; and a geometric deviation measurement step in which a reference sphere is placed on the tables and the tables and the tool are relatively moved to measure a position of the reference sphere, and directions and positions of rotation centers of the rotation axes are calculated.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: October 25, 2022
    Assignee: Sodick Co., Ltd.
    Inventors: Michihisa Kawasaki, Shoya Yokota, Munetaka Ambai
  • Patent number: 11400590
    Abstract: A coupling device (16, 116, 216, 316) configured optimally to communicate between a first and a second admittance controller and actuator assembly, the first and the second admittance control and actuator assembly respectively having a first and a second admittance controller (12a, 12b) configured to drive a respective first and a second actuator and each of the first and the second actuator being respectively connected to a first body having a first mass and a second body having a second mass, wherein the coupling device (16, 116, 216, 316) comprises: an input port having a first input for receiving a first input force signal (f1) from the first admittance controller and actuator assembly (12a) and a second input for receiving a second input force signal (f2) from the second admittance controller and actuator assembly (12b), and a processor adapted to derive a first output force signal for output to the first admittance controller and actuator assembly based on a Lagrange multiplier dependent on a comparison
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: August 2, 2022
    Assignee: Moog BV
    Inventors: Peter de Lange, Richard Dijk, Jeffery T. Williams
  • Patent number: 11356043
    Abstract: The disclosure discloses a linear oscillatory machine control method based on an adaptive full-order displacement observer.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: June 7, 2022
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Wei Xu, Qizhe Wang, Xiang Li, Kaiju Liao, Yirong Tang, Yi Liu
  • Patent number: 11338406
    Abstract: An estimating device estimating a rotary axis position of a workpiece includes first and second position acquisition units acquiring tool positions in first and second directions, a load acquisition unit acquiring first and second directional loads of the tool in the first and second directions, a determination unit determining whether or not the first and second directional loads each are a threshold or less, a turning control unit performing a lathe turning on the workpiece until the first directional load becomes the threshold or less and thereafter performing a lathe turning thereon until the second directional load becomes the threshold or less, and an estimating unit estimating the rotary axis position based on a first directional position of the tool when the first directional load has become the threshold or less, and a second directional position thereof when the second directional load has become the threshold or less.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: May 24, 2022
    Assignee: FANUC CORPORATION
    Inventor: Tomoki Shimizu
  • Patent number: 11233476
    Abstract: A method and system to prevent unexpected operation of a motor when the voltage level on a DC bus drops is disclosed. The voltage level on the DC bus is monitored during a run command. When a run is commanded, the processor executes a control routine to determine a desired amplitude and frequency for the output voltage required to control the motor connected to the motor drive. If the desired frequency of the output voltage exceeds a maximum frequency for the measured voltage on the DC bus, as established by parameters stored in the motor drive, the motor drive limits the output frequency to the maximum frequency for the corresponding measured voltage. The motor drive continually monitors the measured voltage present on the DC bus and further reduces the maximum output frequency allowed during the run if the present value of the measured voltage drops below a previously measured value.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: January 25, 2022
    Assignee: Magnetek, Inc.
    Inventors: Kurtis L. Verheyen, Jacob C. Lester
  • Patent number: 11231296
    Abstract: A resolver system includes a rotatable primary winding, a secondary winding fixed relative to the primary winding, and an analog-to-digital converter electrically connected to the secondary winding. A control module is operatively connected to analog-to-digital converter and is responsive to instructions to apply an excitation voltage with an oscillating waveform to the primary winding, induce a secondary voltage using the secondary winding using the excitation voltage, and acquire a plurality of voltage measurements from the secondary winding separated by a time interval corresponding to ?/3 of the excitation voltage oscillating waveform.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 25, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Gary L. Hess, Kanwalpreet Reen
  • Patent number: 11226033
    Abstract: A shift range control device switches a shift range by controlling the driving operation of a motor in a shift range switching system. The shift range control device includes a drive control unit, a stop control unit, and a return control unit. The drive control unit drives the motor so that an engagement member engages in one of recess portions corresponding to a requested shift range. The stop control unit stops the motor at a target position corresponding to the requested shift range. When the requested shift range corresponds to one of both ends of multiple recess portions, the return control unit returns the rotation position of the motor after the motor stops at the target position.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: January 18, 2022
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11162818
    Abstract: A sensor device comprises a sensor unit for generating a signal indicative of a physical quantity. The device comprises a processing unit for receiving the signal, in which the processing unit comprises a storage memory for storing data derived from the signal as provided by the sensor unit at at least two points in time. The device comprises a bus interface for communicating with an electronic control unit via a digital communication bus. When a read command is received from the electronic control unit, an estimate of the physical quantity is sent in response to the electronic control unit. The processing unit comprises an estimator for calculating the estimate at a reference point in time based on the data stored in the storage memory, in which the reference point in time differs from the point in time at which the read command is received by substantially a predetermined offset.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: November 2, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Mathieu Poezart, Zsombor Lazar, Antonius Duisters
  • Patent number: 11159110
    Abstract: In a motor control apparatus, an exciting unit excites a plurality of excitation phases of a motor. A current measurement unit measures exciting currents flowing through coils of respective phases of the motor, and generates measurement data including measurement values of the exciting currents. A determination unit determines whether or not noise is superimposed on a measurement value included in the measurement data by comparing, with respect to each of the plurality of excitation phases, the measurement data regarding a first phase coil that constitutes that excitation phase with the measurement data regarding a second phase coil that constitutes that excitation phase.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: October 26, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Isomi, Shigeru Kameyama, Yuichiro Hori
  • Patent number: 11152187
    Abstract: A method for positioning a specimen in a microscope system includes overserving and/or processing a region of interest (ROI) on the specimen. The microscope system includes: an optical axis; a movable specimen stage for receiving a specimen; a memory apparatus for storing data records that describe the positions of the specimen; and a control apparatus, which can control the movement of the specimen stage with the aid of the stored data records. The method includes: holding a specimen region (ROI) in the first position; storing a first data record, by which the first position is described, wherein the first position is defined as independent position; storing a second data record, by which the second position is described, wherein the second position is linked to the independent position; and calling one of the stored data records such that the specimen stage is moved in such a way that the specimen region is held at the position that is described by the called data record.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: October 19, 2021
    Assignee: Carl Zeiss Microscopy GmbH
    Inventor: Josef Biberger
  • Patent number: 11146191
    Abstract: A simulation device includes: a simulation system including a predetermined feedback system having at least a predetermined control block structure corresponding to a predetermined device-side configuration; a holding unit holding impulse response information for calculation that is information on an impulse response relating to the predetermined device-side configuration; a first response calculation unit calculating a time response of the predetermined device-side configuration to a predetermined input value by convolution processing using the impulse response information for calculation and the predetermined input value; and a second response calculation unit calculating a response of the simulation system to a command value input to the simulation system by using the time response of the predetermined device-side configuration calculated by the first response calculation unit. According to this configuration, simulation accuracy of a control system is improved.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: October 12, 2021
    Assignee: OMRON Corporation
    Inventors: Kentaro Urabe, Mamoru Egi
  • Patent number: 11081942
    Abstract: An apparatus (1) for reducing bearing voltages in an electric machine (M) with a rotor (2) and a stator (3). A rotor-side and stator-side bearing outer ring (4r, 4s) and a respective bearing inner ring (4i) are provided between the rotor (2) and stator (3). A connection electronics system connect with the motor (M). A compensation arrangement (20) adjusts the potential (ULA-stator) of the bearing voltage at the bearing outer rings (4r, 4s) and the respectively corresponding bearing inner ring (4i) to an identical value. The compensation arrangement (20) comprises an impedance (ZKOMP), of at least one first impedance (ZKOMP, R) between the stator (3) and the rotor-side bearing outer ring (4r). The impedance (ZKOMP) has at least one impedance (ZKOMP. S) between the stator (3) and the stator-side bearing outer ring (4s).
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: August 3, 2021
    Assignee: ebm-papst Mulfingen GmbH & Co. KG
    Inventors: Sebastian Schroth, Marco Weckert, Manuel Walter
  • Patent number: 11038436
    Abstract: A unit power cell of an inverter system, according to one embodiment of the present invention, comprises: a first leg including first and fourth switching elements, which are connected in series to each other, second and third switching elements, which are connected in series with each other between a connection point of the first and second switching elements and a smoothing unit, and first, second, third and fourth diodes, which are inversely and respectively connected in parallel with the first, second, third and fourth switching elements; and a second leg connected in parallel with the first leg and including fifth and sixth switching elements, which are connected in series to each other, and fifth and sixth diodes, which are inversely and respectively connected in parallel with the fifth and sixth switching elements.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: June 15, 2021
    Assignee: LSIS CO., LTD.
    Inventors: Sung-Guk Ahn, Seung-Ki Sul, Hyun-Sam Jung, Jeong-Mock Yoo
  • Patent number: 10994461
    Abstract: A remote controller can be provided on any apparatus that employs feedback control from a native controller to add functionality to the apparatus where the native controller is not capable of providing such functionality independently.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 4, 2021
    Assignee: IMFLUX INC.
    Inventors: Brian Matthew Burns, Gene Michael Altonen
  • Patent number: 10997999
    Abstract: According to one embodiment, there is provided a disk device including a head, a disk, a first motor, and a first circuit. The disk has a recording surface. The first motor causes the head to seek along the recording surface. The first circuit can switch between a first state and a second state. The first state is a state where a current path of the first motor is electrically cut off from a first electricity storage unit. The second state is a state where the current path of the first motor is electrically connected to the first electricity storage unit.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: May 4, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventors: Daisuke Sudo, Hiroshi Isokawa
  • Patent number: 10987767
    Abstract: A receiver-fastener apparatus comprises a receiver-fastener housing, a receiver-fastener turret, an indexing-collet assembly, an anvil, a receiver-fastener delivery assembly, and a swager assembly. The receiver-fastener turret is selectively rotatable relative to the receiver-fastener housing about a receiver-fastener-turret rotation axis (Z). The indexing-collet assembly is selectively movable relative to the receiver-fastener housing between an indexing-collet-assembly extended position and an indexing-collet-assembly retracted position along an indexing-collet-assembly axis (Y) that is parallel to the receiver-fastener-turret rotation axis (Z). The anvil is selectively movable relative to the receiver-fastener turret along an anvil axis (X) that is parallel to the receiver-fastener-turret rotation axis (Z). The receiver-fastener delivery assembly is configured to operatively position receiver fasteners for operative placement on shank fasteners, corresponding to the receiver fasteners.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: April 27, 2021
    Assignee: The Boeing Company
    Inventors: John Walter Pringle, IV, Chris J. Erickson
  • Patent number: 10962387
    Abstract: A method of measuring a movement, the method comprising the steps of: acquiring and digitizing both a first measurement voltage across the terminals of a first secondary winding and also a second measurement voltage across the terminals of a second secondary winding of an inductive movement sensor; multiplying the first measurement voltage by itself in order to obtain a first component of a crossed vector, multiplying the second measurement voltage by itself in order to obtain a second component of the crossed vector, and multiplying together the first measurement voltage and the second measurement voltage in order to obtain a third component of the crossed vector; applying the crossed vector as input to a lowpass filter in order to obtain a filtered vector, and estimating the movement from the components of the filtered vector.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 30, 2021
    Assignee: Safran Electronics & Defense
    Inventors: Olivier Develle, Jean-Luc Manca
  • Patent number: 10866176
    Abstract: A test system for testing a specimen include (a) a set of actuators for applying a desired time history of load to a specimen, (b) a drive unit connected to each actuator, (c) power generating elements (current/pneumatic/hydraulic) and (d) a controller connected to the drive units, the controller generates a drive signal for the drive unit based on feedback received from output of the specimen and an error derived from the feedback and an input command. The controller generates the drive signal by compensating varying system parameters which are introduced due to nonlinear response of the test system and the specimen, wherein the controller does not require (i) additional measured variable other than a feedback received from the specimen and (ii) a numerical model of the test system and the specimen.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: December 15, 2020
    Assignee: Illinois Tool Works Inc.
    Inventors: Sunder Ramasubbu, Somayya Ammanagi
  • Patent number: 10850766
    Abstract: A computer includes a processor and a memory, the memory storing instructions executable by the processor to initiate a calibration based on a portable device stability and a steering wheel angle, detect a vehicle pedal actuation, and, then, based on a portable device acceleration, determine a calibration vector between a portable device coordinate system and a vehicle coordinate system.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: December 1, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Yu Seung Kim, Chun-Yu Chen
  • Patent number: 10814481
    Abstract: A robot system includes a robot mechanism unit provided with a sensor and a motor encoder for detecting a position of a control target, and a robot control device which controls an operation of the robot mechanism unit in accordance with an operation program, in which a learning control unit includes a position error estimating section which estimates low-frequency components in a position error, based on information from the motor encoder and estimates high-frequency components in the position error, based on information from the sensor.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: October 27, 2020
    Assignee: Fanuc Corporation
    Inventors: Shinichi Washizu, Hajime Suzuki
  • Patent number: 10773393
    Abstract: Provided is an auxiliary bending robot capable of processing two workpieces simultaneously, including a linear base slide rail, a slider, a movable major arm, a movable minor arm, a front arm, a swing link, and an additional seventh axis. The slider is slidably connected to the linear base slide rail, and a first axis is formed between the slider and the linear base slide rail. A top portion of the slider is directly or indirectly hinged to a rear end of the movable major arm through a second axis, a front end of the movable major arm is hinged to a rear end of the movable minor arm through a third axis, a front end of the movable minor arm is hinged to a rear end of the front arm through a fourth axis, and a front end of the front arm is rotatably connected to a middle portion of the swing link through a fifth axis.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: September 15, 2020
    Assignee: Nanjing University Of Posts And Telecommunications
    Inventors: Fengyu Xu, Min Xiao, Guoping Jiang