Patents Examined by Bentsu Ro
  • Patent number: 10734801
    Abstract: An electronic control device for use in a motor vehicle includes an electronic housing for accommodating an electronics system that includes a circuit board, and a resistance sensor for detecting water that has penetrated into the electronic housing. The resistance sensor includes at least two sensor electrodes, each of which is present, at least in one section, in an uninsulated state with respect to the interior of the electronic housing, and a control unit that is configured to detect and evaluate a measured resistance value between the two sensor electrodes. The control unit is further configured to output a trigger signal when the detected measured resistance value or its deviation from a normal value meets a trigger criterion that is characteristic of a contact closure between the two sensor electrodes that is caused by the presence of water in the electronic housing.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: August 4, 2020
    Assignee: BROSE FAHRZEUGTEILE GMBH & CO. KAMMANDITGESELLSCHAFT, BAMBERG
    Inventors: Holger Wuerstlein, Florian Pohl, Luca Schaetzlein, Stefan Mutzl, Johannes Stroehlein, Maik Ruemmler
  • Patent number: 10727772
    Abstract: For predicting a load pattern, a method determines a torque error from a torque reference modified by a low pass filter function of the torque reference. The torque reference is one of measured from an induction machine energized by a flux current and a torque current and calculated in an induction machine controller. The method determines a torque increase pulse in response to a torque relative variation calculated from the torque error exceeding an increase threshold. In response to detecting the torque increase pulse, the method determines a change delay time from the torque relative variation and the torque increase pulse. The method further determines a change period from at least two torque increase pulses. The method increases the flux current before a change time that is predicted as a function of the change delay time and the change period.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: July 28, 2020
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Lei Jin, Robert J. Miklosovic, Zhendong Zhang, Timothy M. Rowan, Haihui Lu
  • Patent number: 10720859
    Abstract: A motor starter includes: a motor circuit breaker which has an electronic tripping device; a contactor which is correspondingly interconnected to the motor circuit breaker for forming the motor starter; and at least one control line disposed between the motor circuit breaker and the contactor, via which control line a control signal, which is generated depending upon a switching signal for switching the contactor, is transmitted from the contactor to the electronic tripping device. The electronic tripping device generates a tripping signal for switching off a current flow across the switching contact or switching contacts of the motor circuit breaker, depending upon the control signal and current flow across one or more switching contacts of the motor circuit breaker.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: July 21, 2020
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventor: Georg Reidt
  • Patent number: 10715075
    Abstract: A motor control device is configured to feedback-control state quantity of a motor or a mechanical load, and the device includes a first notch filter disposed inside a feedback control system and configured to change a frequency component to be removed, a first notch controller configured to change a first notch frequency as a center frequency of the first notch filter, a change rate calculator configured to successively calculate a notch frequency change rate indicating a change amount per unit time of the first notch frequency, and a change rate monitor configured to output a signal indicating that the notch frequency change rate has a value outside a first predetermined range when the notch frequency change rate has the value outside the first predetermined range.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: July 14, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroshi Fujiwara, Toru Tazawa, Fumitake Saegusa
  • Patent number: 10710236
    Abstract: A flexible continuum structure capable of realizing a posture feedback is provided. The flexible continuum structure can comprise a flexible continuum structure body and a posture feedback mechanism. The flexible continuum structure body can comprise a distal structural body, a proximal structural body and a middle connecting body. The distal structural body can comprise distal spacing disks, a distal fixation disk and distal structural backbones. The proximal structural body can comprise proximal spacing disks, a proximal fixation disk and proximal structural backbones. The middle connecting body can comprise a proximal guide channel fixing plate, a distal guide channel fixing plate and a structural backbone guide channel. One end of the structural backbone is connected to the proximal fixation disk, and the other end passes through the proximal spacing disks, the structural backbone guide channel and the distal spacing disks and is then securely connected to the distal fixation disk.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: July 14, 2020
    Assignee: Beijing Surgerii Technology Co., Ltd.
    Inventors: Kai Xu, Jiangran Zhao, Zhengchen Dai, Huan Liu, Zhixiong Yang
  • Patent number: 10710238
    Abstract: Modular building blocks for building a robotic system, and the method of building the robotic system using the building blocks, are presented. The building block includes a chassis having a first end and a second end, a first connector positioned closer to the second end than the first end of the chassis, either a second connector or a rotational actuator positioned closer to the first end than the second end of the chassis and configured to couple with the first connector, a signal interface on a surface of the chassis, the signal interface including hardware and circuitry for transferring and receiving signals from and to the building block, and a power and control interface on the chassis for receiving power for the building block.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: July 14, 2020
    Assignee: INSIGHT SCIENTIFIC INTERNATIONAL (SHANGHAI) LTD.
    Inventor: Lin Guo
  • Patent number: 10715062
    Abstract: A driving apparatus allowing two motors to drive a same driving shaft is provided. When a voltage command value is less than a predetermined threshold, a control unit outputs driving command values based on one control pattern such that a direction of a torque of one of the motors becomes different from a driving direction of the driving shaft. Also, when the voltage command value becomes greater than or equal to the predetermined threshold, the control unit outputs the driving command values based on another control pattern, such that the direction of the torque of the one of the motors becomes the same as the driving direction of the driving shaft when the voltage command value is greater than or equal to the predetermined threshold, and does not become different from the driving direction of the driving shaft when the voltage command value drops below the predetermined threshold.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: July 14, 2020
    Assignee: Ricoh Company, Ltd.
    Inventor: Takahisa Koike
  • Patent number: 10715076
    Abstract: The invention provides a motor control device configured to feedback-control state quantity of a motor or a load, the device including a first notch filter disposed inside a feedback control system and configured to change a frequency component to be removed, a first notch controller configured to change a first notch frequency as a center frequency of the first notch filter, and a change forecaster configured to calculate to output, in accordance with the first notch frequency at each of a plurality of past times, at least one of a forecast value of the notch frequency at a specific future time, a forecast value of elapsed time from current time until the notch frequency is to become out of a specific frequency range, and a forecast value of time when the notch frequency is to become out of the specific frequency range.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: July 14, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroshi Fujiwara, Toru Tazawa, Fumitake Saegusa
  • Patent number: 10693410
    Abstract: A control device and a control method for a rotary electric motor, and a rotary electric motor drive system capable of reliably suppressing vibration of the rotary electric motor are provided. A rotary electric motor is controlled by PWM at a predetermined carrier frequency, and in a case where a vibration frequency in a space zero-order eigenmode of the rotary electric motor and a frequency of a frequency component of electromagnetic exciting force that generates the eigenmode overlap with each other, a value of the carrier frequency is switched from a first value to a second value different from the first value.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: June 23, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takeshi Yoshida, Takafumi Hara, Katsuhiro Hoshino, Kazuto Oyama
  • Patent number: 10680540
    Abstract: In an apparatus for controlling a motorized vehicle, a rotary electric machine controller is configured to perform intermittent operation by periodically alternating between a driving period and a coasting period. A torque determiner is configured to determine a first torque during the driving period and a second torque during the coasting period. A transition period determiner is configured to determine whether to set a transition period between the driving period and the coasting period. If the transition period is determined to be set, the torque determiner determines a third torque between the first torque and the second torque and within a predetermined rang. The rotary electric machine controller sets the transition period between the driving period and the coasting period and drive the rotary electric machine with the third torque during the transition period.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: June 9, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masaru Suzuki, Kousuke Baba, Shigeru Maeda, Chinatsu Washizu
  • Patent number: 10673308
    Abstract: A drive motor in which a torque sensor is arranged on an outer circumference of a shaft, includes a rotor, a rotor shaft arranged inside the rotor, and an output shaft that is joined to the rotor shaft by a spline joint and outputs rotational force of the rotor shaft to the output side. The torque sensor is arranged on an output side of the spline joint in a range not overlapping with the spline joint.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: June 2, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yutaka Arimura, Daisuke Hoshino, Tatsuya Ohzu, Shingo Soma, Yosuke Tanaka
  • Patent number: 10655377
    Abstract: A method of detecting an obstruction of a passenger door on a public transit vehicle comprising the steps of: recording the profile of the actuator (motor) current vs. door position following initiation of an opening or closing of the door; based on the recorded profile of actuator current vs. door position acceptable increase in motor current for one or more discrete positions following initiation of opening or closing the door indicative of no obstruction; and comparing an instant current profile to the acceptable increase and indicating a potential door obstruction if the current exceeds the acceptable increase.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: May 19, 2020
    Assignee: WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATION
    Inventor: Alan David Goetzelmann
  • Patent number: 10658960
    Abstract: Disclosed are a motor control system and a motor control method that allow the balance of evaluation values in a trade-off relationship to be easily adjusted. The motor control system includes: an inverter (5) that applies AC voltage to a motor (1); a control unit (3, 4) that generates a voltage command for AC voltage in response to a control command; and a feedback unit (6, 7, 8) that applies a correction value to the control unit. The feedback unit estimates a plurality of evaluation values from a state quantity using a plurality of regression formulas, where at least one state quantity (x1, x2) of the motor is an input variable and a plurality of evaluation values (y1, y2) of the motor or a motor-driven object (2) are output variables, calculates an evaluation function with the estimated plurality of evaluation values as arguments, and generates a correction command on the basis of a calculation value resulting from the evaluation function.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: May 19, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Sumita, Yoshitaka Iwaji
  • Patent number: 10651779
    Abstract: In this electric linear motion actuator, a linear motion mechanism and an electric motor are arranged in line along the same axis, which is an axis of a rotation input/output shaft of the linear motion mechanism. The electric motor includes a stator and a rotor which are arranged such that the directions of magnetic poles thereof for generating interlinkage magnetic flux contributing to a torque are parallel to a rotation shaft of a motor. The rotor has torque generating surfaces at both faces in the axial direction thereof. The stator has first and second excitation mechanisms arranged on both sides in the axial direction of the rotor. The first and second excitation mechanisms have independent first and second system coil groups. A power supply system for independently supplying power to the first and second system coil groups is provided.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: May 12, 2020
    Assignee: NTN CORPORATION
    Inventor: Yui Masuda
  • Patent number: 10644626
    Abstract: A method and a system for acquiring a rotor position of a rotary transformer are provided. The system includes: a rotary transformer decoder, a low pass filter and a microprocessor, which includes a synchronous demodulation module and a calculation module. The rotary transformer decoder outputs an excitation signal and acquires first position information of the motor rotor. The calculation module performs calculation to acquire second position information of the motor rotor. The rotary transformer decoder and software decoding are integrated to acquire two rotor positions, and the two rotor positions are compared. In a case that a preset determining condition is met, one of the rotor positions is used for motor control, and the other is used as redundant data for backup, thereby improving the reliability of the acquired rotor position.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 5, 2020
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Anbo Yu, Chengwei Zhang, Enli Du
  • Patent number: 10640224
    Abstract: A method for controlling a motor includes obtaining a present electrical parameter of a battery, calculating a compensation amount of a control signal of the motor according to the present electrical parameter, and modifying the control signal according to the compensation amount.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: May 5, 2020
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Changxing Zhou, Qiu Lan, Jinyun Ni
  • Patent number: 10644689
    Abstract: A transistor drive circuit drives a bipolar-type transistor and a MOSFET that are connected in parallel to each other. A temperature detection element that detects a temperature of a the bipolar-type transistor or the MOSFET. When the temperature is equal to or less than a threshold, the transistor drive circuit turns on both of the MOSFET and the bipolar-type transistor. When the temperature exceeds the threshold, the transistor drive circuit turns on only the bipolar-type transistor.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: May 5, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kohei Shinomiya, Takahiro Iwamura, Akimasa Niwa, Masahiro Yamamoto, Seiji Nishimoto
  • Patent number: 10644640
    Abstract: The invention relates to a method for heating a device driven with a brushless direct current motor, in which method a voltage is applied to stator coils of the brushless direct current motor during a heating phase. The invention further relates to a device for carrying out said method. According to the invention, the stator coils are series-connected during the heating phase. The series connection of the stator coils increases the resistance by a factor of 4.5 compared to a parallel connection of a stator coil with a series connection of two stator coils, as occurs in a brushless direct current motor wired according to the prior art. The heating power is therefore also higher by a factor of 4.5 with the same operating current.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 5, 2020
    Assignee: Robert Bosch GmbH
    Inventor: Horst Kleinknecht
  • Patent number: 10644629
    Abstract: The present invention relates to a fan motor driving circuit, a driving method, and a cooling device and an electronic machine using the same. The present invention provides a motor driving circuit capable of suppressing strain on coil current and/or reducing noise. A control circuit a control circuit switches an output phase of an H-bridge circuit based on a Hall signal, and in a soft switching duration (Tss) that starts before and ends after the output-phase switching, slowly varies a duty ratio (DUTY1) of an output voltage (VOUT1) of one leg of the H-bridge circuit over time, and meanwhile, varies a duty ratio (DUTY2) of an output voltage (VOUT2) of another leg of the H-bridge circuit in an opposite direction with respect to the duty ratio (DUTY1) of the output voltage (VOUT1) of the one leg.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: May 5, 2020
    Assignee: ROHM CO., LTD.
    Inventors: Joji Noie, Tomofumi Mishima, Yuki Gohara
  • Patent number: 10637381
    Abstract: A device according to an embodiment including a command generator that generates a current command value; a detector that detects a current value to be outputted from an inverter to an motor; a generator that generates a gate command to the inverter, and obtains an output voltage target vector of the inverter based on the gate command; an estimator that obtains a rotary phase angle estimated value of the motor based on the detected current value and the output voltage target vector; and a polarity determination part that, with supply of a current in synchronism with a rotor frequency of the motor, performs determination of a magnet magnetic pole using a generated magnetic flux or voltage in synchronism with the generated rotor frequency or both of them, and outputs a correction value for the rotary phase angle estimated value based on a result of the determination.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: April 28, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Tomoaki Shigeta, Shun Taniguchi, Kentaro Suzuki, Kazuaki Yuuki