Patents Examined by Zoheb S Imtiaz
  • Patent number: 11988503
    Abstract: A failure diagnostic system of a motor encoder is disclosed and includes a motor, an encoder, a servo driver, and a safety module. The servo driver controls the motor through a current command. The safety module continuously obtains a feedback position of the motor through the encoder. When the safety module determines based on the feedback position that the current state of the motor is consistent with a pre-determined disturbance condition, the safety module requests the servo driver to output an additional current command to disturb the motor. Next, the safety module determines whether the encoder is failure based on a variation of following feedback position.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: May 21, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventor: Chia-Chih Chou
  • Patent number: 11984838
    Abstract: An appliance, as provided herein, can include a direct current load and a current sensing circuit that can be coupled to the direct current load. The current sensing circuit can be configured to collect electrical data corresponding to the direct current load. The appliance can include one or more processors that can be coupled to the current sensing circuit. The one or more processors can be configured to identify at least one attribute of the direct current load based, at least in part, on the electrical data and activate at least one operation of the direct current load or the appliance based, at least in part, on identification of the at least one attribute of the direct current load.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: May 14, 2024
    Inventors: Ricardo Alberto Aguiar, Jr., Maria Alejandra Contreras, Timothy David Kaiser, Brett Alan Farris
  • Patent number: 11984826
    Abstract: Reduced computation time for model predictive control (MPC) of a five level dual T-type drive considering the DC link capacitor balancing, the common-mode voltage (CMV) along with torque control of an open-ends induction motor based on determining a reduced set of switching states for the MPC. The reduced set of switching states are determined by considering either CMV reduction (CMVR) or CMV elimination (CMVE). Cost function minimization generates a voltage vector, which is used to produce gating signals for the converter switches. The reduced switching state MPC significantly reduces computation time and improves MPC performance.
    Type: Grant
    Filed: November 2, 2022
    Date of Patent: May 14, 2024
    Assignees: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, King Abdullah City for Atomic & Rewnewable Energy (K.A. CARE)
    Inventors: Aboubakr Salem, Mohamed Ali Abido, Mohamed Mamdouh
  • Patent number: 11979105
    Abstract: Disclosed are an apparatus and method for controlling a motor. An exemplary embodiment of the present disclosure provides an apparatus for controlling an operation of a motor, the apparatus including: a first motor control unit connected to a first winding part of the motor and configured to control the operation of the motor; and a second motor control unit connected to a second winding part of the motor and configured to control the operation of the motor, in which the first motor control unit turns on or off current paths formed between the first motor control unit and the motor by controlling switches included in the first motor control unit, and the second motor control unit turns on or off current paths formed between the second motor control unit and the motor by controlling switches included in the second motor control unit.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: May 7, 2024
    Assignee: HL MANDO CORPORATION
    Inventor: Taesik Kim
  • Patent number: 11977270
    Abstract: Actuators for carrying and actuating a lens having a first optical axis, the lens receiving light folded from a second optical axis substantially perpendicular to the first optical axis, comprising first and second VCM engines coupled to the lens and first and second linear ball-guided rails operative to create movement of the lens in two substantially orthogonal directions upon actuation by respective VCM engines.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: May 7, 2024
    Assignee: Corephotonics Lid.
    Inventors: Gil Bachar, Itay Yedid, Gal Shabtay, Ephraim Goldenberg, Gal Avivi, Itay Jerby
  • Patent number: 11973446
    Abstract: Linear electric motor comprising a stator comprising a plurality of stator segments and a drive system comprising at least one pair of drive units, a first drive unit of said pair connected to a first stator segment and a second drive unit of said pair connected to a second stator segment adjacent the first stator segment, the drive units connected to a DC voltage source, each drive unit comprising a DC input circuit section and a multi-level inverter connected to the DC voltage source via the DC input section, the multi-level inverter comprising a multiphase output connected to coils of the corresponding stator segment. The DC circuit section of the drive units comprises at least two link capacitors (C1, C2) connected between a positive and a negative voltage supply line (V+, V?) and having a mid-point therebetween.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: April 30, 2024
    Assignee: HYPER POLAND ELECTRO S.A.
    Inventors: Marek Michalczuk, Marcin Nikoniuk, Pawel Radziszewski
  • Patent number: 11973450
    Abstract: Disclosed are a current detection circuit and a garbage can. The current detection circuit may include: a first switching device for being connected with a first current driving end of the direct current motor; a second switching device for being connected with a second current driving end of the direct current motor; a third switching device for being connected with the second current driving end of the direct current motor; a fourth switching device for being connected with the first current driving end of the direct current motor; a control chip, the first switching device, the second switching device, the third switching device and the fourth switching device are all electrically connected with the control chip; and a current detection module, the control chip is connected to a detection output end of the current detection module.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: April 30, 2024
    Assignee: Jiangmen Jinlong High Technology Industrial Co., Ltd.
    Inventors: Jinsheng Liao, Weitang Lu
  • Patent number: 11967915
    Abstract: The vibration and noise generated in a permanent magnet synchronous motor are effectively suppressed. A motor control device 1 comprises: a triangular wave generation unit 17 which generates a triangular wave signal Tr that is a carrier wave, a carrier frequency adjustment unit 16 which adjusts a carrier frequency fc that represents a frequency of the triangular wave signal Tr, and a gate signal generation unit 18 which performs pulse-width modulation on three-phase voltage commands Vu*, Vv*, Vw* according to a torque command T* using the triangular wave signal Tr, thereby generating a gate signal for controlling an operation of an inverter. The carrier frequency adjustment unit 16 adjusts the carrier frequency fc so as to change a voltage phase error ??v representing a phase difference of the three-phase voltage commands Vu*, Vv*, Vw* and the triangular wave signal Tr based on the torque command T*, and a rotation speed ?r of a motor.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: April 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Takaya Tsukagoshi, Takafumi Hara, Katsuhiro Hoshino, Toshiyuki Ajima
  • Patent number: 11953559
    Abstract: A driving related system that may include an integrated circuit (IC) that may include IC conductors and test unit; a PCB that may include PCB conductors; intermediate conductors for coupling the IC conductors to the PCB conductors; wherein the test unit is configured to: electrically test a continuity of a first conductive path that comprises a first group of intermediate conductors, a first group of IC conductors and a first group of PCB conductors; and generate a continuity fault indication when detecting a discontinuity of the first conductive path; and wherein the driving related system is configured to perform a safety measure, in response to a generation of one or more continuity fault indications.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 9, 2024
    Assignee: Mobileye Vision Technologies Ltd.
    Inventors: Efraim Mangell, Elchanan Rushinek, Leonid Smolyansky, Giora Yorav
  • Patent number: 11955848
    Abstract: A method of calibrating a motor assembly includes selecting an electric motor and a motor controller for the motor assembly, obtaining at least one electric motor parameter of the electric motor, calculating a correction factor for the electric motor based upon the at least one electric motor parameter, and programming the motor controller with the correction factor.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: April 9, 2024
    Assignee: Lennox Industries Inc.
    Inventors: Nasim Rahman, Wei Wang, Yan Yang, Ty Winkler
  • Patent number: 11944012
    Abstract: A method for transmitting data from an actuator to a control unit controlling the actuator. The control unit controls a piezoelectric element contained in the actuator. In order to transmit the data, in the actuator, a load being or not being connected in parallel with the piezoelectric element.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: March 26, 2024
    Assignee: ROBERT BOSCH GMBH
    Inventors: Andreas Kneer, Andreas Hempel, Charlotte Summerer, Dieter Elshuber, Dieter Schuler, Markus Ditlevsen, Yannick Chauvet
  • Patent number: 11936316
    Abstract: A method of controlling a permanent magnet synchronous machine (PMSM) includes: determining an estimated back-electromotive force (BEMF) generated in windings of the PMSM based on an estimated voltage applied to the windings of the PMSM, an estimated motor current of the PMSM, an estimated motor circuit resistance, and an estimated synchronous inductance of the PMSM. The method also includes determining an estimated permanent magnet (PM) flux linkage in the PMSM based on the estimated motor current of the PMSM; determining a BEMF correction term based on the estimated PM flux linkage; and determining an estimated rotor flux space vector based on the estimated BEMF and the BEMF correction term.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: March 19, 2024
    Assignee: Steering Solutions IP Holding Corporation
    Inventors: Pawel Szymula, Prerit Pramod
  • Patent number: 11936317
    Abstract: A representative fault-tolerant rotating electromechanical actuator comprises a permanent magnet synchronous motor with first and second windings that each comprise three phases. First and second voltage source inverters (VSI) provide output signals independently with respect to each other. The first VSI provides output signals to drive the three phases of the first winding, and the second VSI provides output signals to drive the three phases of the second winding. The three phases of the first winding are driven simultaneously with the three phases of the second winding. Control electronics monitor signals associated with the three phases of the windings and detect a fault condition within a first phase of the first winding. The control electronics command the first VSI to drive only second and third phases of the first winding while simultaneously commanding the second VSI to drive the three phases of the second winding.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: March 19, 2024
    Assignee: Blue Origin, LLC
    Inventors: Vladan Jevremovic, Adrian Alberto Galindo, Austin Gaspar
  • Patent number: 11929695
    Abstract: A control device which includes a power conversion circuit configured to supply driving power to an electric motor, a magnetic flux estimation circuit configured to estimate a primary magnetic flux of the motor, and a voltage command generation circuit (control circuit) configured to control the conversion circuit based on an estimation result of the primary magnetic flux, in which the estimation circuit performs, when an operating speed of the motor is less than a predetermined level, a first estimation of estimating the primary magnetic flux based on an output current to the motor and an inductance thereof, and performs, when the speed exceeds a predetermined level, a second estimation of estimating the primary magnetic flux by estimating a magnetic flux differential value based on an output voltage of the conversion circuit and integrating the value using, as an initial value, an estimation result by the first estimation.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: March 12, 2024
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Takahiro Saeki, Shingo Fukumaru
  • Patent number: 11926374
    Abstract: The embodiments of the present disclosure relate to a torque compensating device and method. Specifically, the torque compensating device according to the present disclosure may include a compensation torque amount calculator for calculating a compensation torque amount by performing band pass filtering on a frequency corresponding to a vehicle speed of a host vehicle, an inverse compensation torque generator for generating an inverse compensation torque if it is determined that judder and shimmy of a steering wheel have occurred based on the compensation torque amount, and a controller configured to control the generation of the inverse compensation torque to be stopped by determining to be a temporary kickback if the compensation torque amount is calculated to be less than or equal to a first reference value.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: March 12, 2024
    Assignee: HL MANDO CORPORATION
    Inventor: Yeong Jin Jeong
  • Patent number: 11929676
    Abstract: A power conversion apparatus includes a converter circuit converting alternating current voltage output from an AC power supply into direct current voltage. The converter circuit includes unit converters. The power conversion apparatus generates a reference duty based on detection values of a current detector and a voltage detector, and generates a pulse width modulation signal based on a result of comparison between a carrier signal and a corrected duty obtained by correcting the reference duty. When a first reference duty in a first carrier period differs from a second reference duty in a second carrier period subsequent to the first carrier period, a first corrected duty of a first phase in a first carrier period in one power supply period after and a second corrected duty of a second phase in the first carrier period in one power supply period after are controlled to have different values.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: March 12, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Motoya Suzuki, Kenji Iwazaki, Satoru Ichiki, Koichi Arisawa
  • Patent number: 11919402
    Abstract: A relay control apparatus and method is capable of retaining the operation state of a plurality of relays even when a processor is reset due to a system error. Therefore, the relay control apparatus and method has an advantage of preventing an accident caused by the reset of the processor since the operation state of a plurality of relays is maintained even when the processor is reset. In addition, if the operation state of the processor is a reset state even after a predetermined time passes, the operation state of the plurality of relays is changed to a turn-off state, and thus there is an advantage of preventing system resources and energy from being wasted.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: March 5, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Jang-Hyeok Choi, Do-Hyeok Kang
  • Patent number: 11916506
    Abstract: A motor control device includes a motor, a drive circuit, a current detection unit, and a control unit. The motor has a plurality of phases of motor windings. The drive circuit is provided on a low potential side of the motor windings. The current detection unit has current detection resistors corresponding to each phase, and is provided on a low potential side of the drive circuit. The control unit includes an actuator control unit and an abnormality diagnosis unit. The abnormality diagnosis unit determines that the current detection unit is abnormal, when a difference between a maximum current, which is a maximum value of the phase current when a same duty ratio is commanded to each phase, and a minimum current, which is a minimum value of the phase current when a same duty ratio is commanded to each phase, is equal to or greater than an abnormality determination threshold.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: February 27, 2024
    Assignee: DENSO CORPORATION
    Inventor: Yusaku Kawaguchi
  • Patent number: 11916499
    Abstract: A linear transport system comprises a first carriage and a second carriage, a linear motor for driving the first carriage and the second carriage and a guide rail. The linear motor comprises a stator and a first and a second rotor. The stator has a plurality of drive coils that are arranged along the guide rail individual motor modules comprise a plurality of drive coils. The first rotor is arranged on the first carriage and the second rotor is arranged on the second carriage. The first carriage has a first magnetic field generator. The second carriage has a second magnetic field generator. The first magnetic field generator differs from the second magnetic field generator at least in terms of its magnetic vector field, wherein the magnetic fields of the magnetic field generators are detected to identify the corresponding carriage.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: February 27, 2024
    Assignee: Beckhoff Automation GmbH
    Inventors: Tobias Schönke, Marco Grabowski, Jan Achterberg, Manuel Bettenworth, Uwe Prüssmeier
  • Patent number: 11916500
    Abstract: Techniques and methods related to a multi-mode operation of a synchronous electrical generator. The synchronous generator is configurable in at least two modes: a grid-power mode and a power-generation mode. In the power-generation mode, electrical power is generated in response to power produced by a prime mover. In the grid-power mode, the rotor is in standstill mode, and the configurable rotor winding is configured to generate a plurality of AC magnetic fields. The system provides for seamless transfer of power between grid-power to power generation using an energy storage unit and associated power conditioning apparatus.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: February 27, 2024
    Assignee: RAYTHEON COMPANY
    Inventors: Stephen Kuznetsov, Eric Stich