Plural, Diverse Or Diversely Controlled Electric Motors Patents (Class 318/34)
  • Patent number: 10416663
    Abstract: When a motor replacement detection portion (4) detects replacement of a motor (M), a control portion (2) of the motor control apparatus executes limiting processing for limiting action of the motor (M), at least until an acceptance portion (5) accepts an input of confirmation information from a user.
    Type: Grant
    Filed: December 18, 2016
    Date of Patent: September 17, 2019
    Assignee: OMRON Corporation
    Inventors: Satoshi Yamawaki, Takao Ushiyama, Masakazu Matsugami, Takaya Kitano
  • Patent number: 10391849
    Abstract: A vehicle drive device that includes a rotating electrical machine that together with an internal combustion engine serves as a driving force source for wheels, a speed change device disposed next to the rotating electrical machine in an axial direction, or a direction in which a rotation axis of the rotating electrical machine extends, a drive device case formed by joining a first case accommodating the rotating electrical machine and a second case accommodating the speed change device, and a rotating electrical machine control device that controls the rotating electrical machine and that is fixed to outside of one of the first case and the second case.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 27, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Tomoyuki Suzuki, Tatsuyuki Uechi
  • Patent number: 10396700
    Abstract: A multi-motor system, including a plurality of ECMs. The ECMs include a main ECM and a plurality of subordinate ECMs. A first temperature detection unit and a second temperature detection unit detect a temperature T1 and a temperature T2 at different positions, respectively; the main ECM automatically selects an operation parameter according to temperature differences between the temperature T1 and the temperature T2. The main ECM informs each subordinate ECM of the temperature T1 and the temperature T2, and each subordinate ECM selects an operation parameter according to the temperature T1 and the temperature T2. In operation, the main ECM informs each subordinate ECM of the temperature T1 and the temperature T2, and each subordinate ECM selects an operation parameter in accordance with the temperature T1 and the temperature T2.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: August 27, 2019
    Assignee: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.
    Inventors: Wenqing Bian, Ge Hu
  • Patent number: 10242706
    Abstract: A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk. A first driving voltage is applied across a first and second windings of the spindle motor connected in series while measuring a first mutual inductance voltage across a third winding, wherein the first driving voltage comprises a first amplitude and a first polarity. A second driving voltage is applied across the first and second winding connected in series while measuring a second mutual inductance voltage across the third winding, wherein the second driving voltage comprises the first amplitude and a second polarity opposite the first polarity. The first measured mutual inductance voltage and the second measured mutual inductance voltage are combined to generate a first mutual inductance signal, and an angular position of the spindle motor is estimated based on the first mutual inductance signal.
    Type: Grant
    Filed: April 29, 2018
    Date of Patent: March 26, 2019
    Assignee: Western Digital Technologies, Inc.
    Inventors: Brian A. Johnson, Timothy A. Ferris, Jaesoo Byoun
  • Patent number: 10220726
    Abstract: An electric vehicle accomplishes speed changes through the use of electronically controlled, multiple electric motor configurations that are coupled to an output drive shaft instead of a speed change transmission. A parallel-coupled motor configuration includes at least two motors that are each coupled to the output drive shaft through respective gear arrangements, each gear arrangement having a respective gear ratio. In a serially-coupled motor configuration, the stator of the second motor is coupled to the rotor of the first motor, where the rotor of the second motor is coupled to the output drive shaft. The required torque to reach or maintain a desired vehicle speed can be obtained by selective energization of either one or both of the motors (in both multi-motor configurations). Two motors are also coupled to a differential gear so that the rotational speed contributed by both motors are additive at the output shaft.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 5, 2019
    Assignee: Superior Electron, LLC
    Inventors: Christopher P. Zing, Joachim H. Wiest, Henry T. Fung
  • Patent number: 10199904
    Abstract: A system includes a primary Printed Circuit Board (PCB) and a heat transfer device that is attached to the primary PCB. The primary PCB includes a heat generating device and a thermal conductive inlay attached to the heat generating device. The heat transfer device includes a secondary PCB that is thermally coupled to the primary PCB, and a heat dissipation block. The heat dissipation block has a first side attached to the thermal conductive inlay of the primary PCB and a second side attached to the secondary PCB.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: February 5, 2019
    Assignee: Schaft Inc.
    Inventors: Akihiko Sasaki, Nobuyuki Ito, Junichi Urata
  • Patent number: 10122318
    Abstract: A network-based motor control system-on-chip (SoC) and a motor control method. The network-based motor control system includes a network unit; a first processor for exchanging a first data with the network unit and processing a first task related to the first data; a motor; a motor control unit for controlling operation of the motor; a second processor for exchanging a second data related to the operation of the motor with the motor control unit and processing a second task related to the second data; and a data sharing unit for sharing processing results of the first task and the second task by the first processor and the second processor, in which the first task and the second task are concurrently processed.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: November 6, 2018
    Assignee: AJINEXTEK CO., LTD
    Inventors: Kwang Ju Sung, Chang Ho Kim, Sung Hyuk Choi, Sang Tae Lee
  • Patent number: 9893670
    Abstract: A controller of an inverter control apparatus includes an A/D conversion unit that performs digital conversion of an input signal when a signal for either an A/D converter start trigger or an A/D converter start trigger is input thereinto; a first inverter control unit that generates the A/D converter start trigger which starts the A/D conversion unit, based on A/D converter start timing information and a first carrier signal; a second inverter control unit that generates the A/D converter start trigger which starts the A/D conversion unit, based on A/D converter start timing information and a second carrier signal; and an A/D start factor selection unit that receives either the A/D converter start trigger or the A/D converter start trigger and selects an A/D start factor at a predetermined period timing of an operation period of the first carrier signal and the second carrier signal.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: February 13, 2018
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Rei Kasahara, Dongsheng Li
  • Patent number: 9882496
    Abstract: A conducted EMI noise reduction effect close to that achieved by using an optimal modulating waveform as a modulating wave is achieved when employing a frequency spreading technique as a measure against noise when a conducted EMI standard is extended to a low-frequency range. A triangular wave/Hershey's Kiss approximation signal generating unit and a triangular wave generation control unit generate a fundamental triangular wave by a transistor charging a capacitor with a current and a transistor discharging the current from the capacitor. A slope switching signal generating unit generates signals expressing the start and end of a charge period and the start and end of a discharge period. An additional charge or additional discharge is carried out in response to the signals turning a transistor on, and the slope of the triangular wave temporarily increases in that period only.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: January 30, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Kenichi Nishijima
  • Patent number: 9881734
    Abstract: An actuator or generator device includes an AC rotary electric machine having an electrical connection for transferring electrical energy to the terminals of the stator of the machine, the device including a transformer.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: January 30, 2018
    Assignee: LABINAL POWER SYSTEMS
    Inventor: C├ędric Duval
  • Patent number: 9859823
    Abstract: In a method for ascertaining the phase currents of an electric machine having a power converter and a stator with a phase number of four or more, the phase currents of a measuring number of measuring phases is measured, which is at least two and is lower by at least two than the phase number, and the phase currents of the remaining phases are arithmetically determined from the measured phase currents, at least the measured phase currents, a spatial angle of the measuring phases and a spatial angle of the remaining phases being used for the arithmetical determination.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: January 2, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventor: Julian Roesner
  • Patent number: 9742341
    Abstract: An AC motor drive motor system includes a charge and discharge controller controlling a charging and discharging circuit based on a DC voltage value on the output side of a converter and a charging and discharging current value of a power storage device. The charge and discharge controller, when regenerative power via an inverter from an AC motor exceeds a power threshold, charges the power storage device such that the DC voltage value becomes a voltage threshold corresponding to the power threshold. When regenerative power is the power threshold or less, the converter performs regeneration when the DC voltage value reaches a regeneration start voltage threshold or higher, and ends regeneration when the DC voltage value reaches a regeneration end voltage threshold or lower. The DC-voltage-value time averaged value during regeneration is set lower than that at no-load time when the converter does not perform power supply and regeneration.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: August 22, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuyoshi Watabu, Akiko Tabuchi, Yoshinori Kanda
  • Patent number: 9741251
    Abstract: A collision avoidance assistance device includes an object detection unit configured to detect the object, a planned execution timing determination unit configured to determine a planned execution timing, a motion characteristics value acquisition unit configured to acquire a motion characteristics value in a comparison target time span which is a predetermined time span later than a detection timing at which the object detection unit detects the object and prior to the planned execution timing, and a collision avoidance assistance determination unit configured to determine whether or not to execute the collision avoidance assistance at the timing prior to the planned execution timing, based on the result of comparison between the motion characteristics value and a reference motion characteristics value in the comparison target time span obtainable from a history of the past motion characteristics values.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: August 22, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shintaro Yoshizawa
  • Patent number: 9716452
    Abstract: An ECU has a function of calculating a rotation angle, which is used for torque control, based on amplitude-modulated signals SIN and COS outputted from an angle sensor and a synchronous detection signal. Frequency components generated at the time of switching operation of switching elements of an inverter connected to a motor-generator is included in an output voltage of the inverter. The ECU has a function of shifting frequencies of the frequency components and an excitation frequency of an excitation signal from each other so that noise having the frequencies of the frequency components are not superimposed on the amplitude-modulated signals SIN and COS.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: July 25, 2017
    Assignee: DENSO CORPORATION
    Inventors: Koichi Nishibata, Junichi Fukuta, Yusuke Shindo
  • Patent number: 9682693
    Abstract: A hybrid vehicle includes: an engine; a first motor; a planetary gear having three rotary elements that are connected respectively to a rotary shaft of the first motor, an output shaft of the engine, and a drive shaft coupled to an axle such that on a collinear diagram, the rotary shaft, the output shaft, and the drive shaft are arranged in that order; a second motor; a first inverter configured to drive the first motor; a second inverter configured to drive the second motor; a battery capable of exchanging power with the first and second motors via the first and second inverters; and an electronic control unit configured to control the engine such that a rotation speed of the engine increases at a predetermined time when the engine is operative, respective gates of the first and second inverters are both blocked, and an accelerator is ON.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: June 20, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaya Amano, Shinichiro Minegishi, Takashi Ando, Takeshi Kishimoto
  • Patent number: 9654031
    Abstract: A controlling apparatus includes a storage unit for storing, for each sampling period, a combination of a primary frequency of connected induction motors and the amplitude of a voltage command value, and a gradient detection unit for calculating a value corresponding to an increase in the amplitude of the voltage command value divided by an increase in the primary frequency, and for outputting a failure signal upon determining, when a result of the division is less than a predetermined reference value, that the plurality of induction motors include at least one induction motor having a phase sequence that includes incorrect wiring with respect to the power converter.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: May 16, 2017
    Assignees: CENTRAL JAPAN RAILWAY COMPANY, FUJI ELECTRIC CO., LTD.
    Inventors: Kei Sakanoue, Hirokazu Kato, Hiroki Shimoyama, Tomotaka Nishijima, Junichi Ishii, Yasushi Matsumoto, Toshie Kikuchi
  • Patent number: 9637074
    Abstract: The invention relates to a drive arrangement in a motor vehicle, wherein a first drive, a second drive and a third drive are provided, wherein the drives each have two supply connections, and wherein the first drive and the second drive each have their own associated driver circuit. The invention proposes that the supply connections of the third drive can be connected to high potential (V+) and low potential (V?) by means of the two driver circuits.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: May 2, 2017
    Assignee: Brose Fahrzeugteile GmbH & Co. KG, Hallstadt
    Inventor: Toni Nagler
  • Patent number: 9590522
    Abstract: A motor driving system includes an offset value learning part, which learns offset values of current sensors, when all switching elements are in off-states and a motor driving circuit is in an off-state, in which the motor driving circuit generates no motor driving current. The offset value learning part includes a first learning part and a second learning part. The first learning part learns the offset value of the current sensor of each phase at an arbitrary motor rotation angle, when an induced motor voltage of a three-phase motor is smaller than an input voltage of the motor driving circuit. The second learning part sequentially learns the offset value of the current sensor of the phase, a phase voltage value of which varying with the motor rotation angle is intermediate, when the induced motor voltage is equal to or larger than the input voltage.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 7, 2017
    Assignee: DENSO CORPORATION
    Inventor: Ryo Suzuki
  • Patent number: 9577424
    Abstract: Systems and methods are provided for performing diagnostic testing for multiple motor drives operating in parallel. In one embodiment, the diagnostic testing may involve determining which of the multiple motor drives are in operation and communicating the active configuration of motor drives to testing circuitry. The testing circuitry generates an enable input signal transmitted to the transistor gates in each of the active motor drives. The testing circuitry also generates a power supply input signal transmitted to a DC to DC converter in each of the active motor drives. The responses to the enable input signal and the power supply input signal are measured to determine safety compliance.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: February 21, 2017
    Assignee: Rockwell Automation Technologies, Inc.
    Inventor: Alan J. Campbell
  • Patent number: 9562933
    Abstract: Methods and systems are described for diagnosing a multiple speed, relay controlled engine cooling fan system. One method includes measuring the change in current drawn from a battery-alternator system when fan speed is modified. A degradation in cooling fan operation is flagged when measured current change differs from an expected change.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: February 7, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Troy Fischer, Jayne Froney, Randall J. Houston, Brian D. Rutkowski
  • Patent number: 9440556
    Abstract: An anti-slip control device for a vehicle having an electromotive drive system includes one or more electric driving motors. In order to limit wheel slip, the rotational speed of the driving wheels is regulated by controlling the rotational speed of the rotary field generated in at least one electric driving motor, each electric driving motor being fed by a controllable converter associated therewith. In order to control the rotational speed, the anti-slip control device constantly informs each converter about the maximum allowed rotational speed of the driving motor or driving wheel associated with the respective converter.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: September 13, 2016
    Assignee: AUDI AG
    Inventors: Sebastian Loos, Dirk Hirschmann, Bodo Kleickmann
  • Patent number: 9428079
    Abstract: An electric vehicle includes: a synchronous motor; an induction motor; and a control unit configured to adjust a torque from the synchronous motor and a torque from the induction motor, wherein the control unit includes a torque varying device configured to reduce an output torque from the synchronous motor while maintaining a total drive force of the electric vehicle, and increasing an output torque from the induction motor in the case where the electric vehicle is stopped in a state in which a torque is output from the synchronous motor. Accordingly, there is provided an electric vehicle capable of restraining deterioration of drivability and performing thermal protection of a motor and a control unit.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: August 30, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Takashi Ota
  • Patent number: 9325264
    Abstract: An electric motor drive device 1000 includes: an inverter 3 that drives a motor 4, a voltage division circuit 2 that serves as a neutral point potential detection unit that detects a neutral point potential of a stator winding of the motor 4; and a controller 1 that estimates a rotor position of the motor 4 based on the detected neutral point potential, and that controls the inverter 3 based on an estimation result. A ground potential of the controller 1 is set to a negative side potential or a positive side potential of a DC voltage that is supplied to the inverter 3. The voltage division circuit 2 detects the neutral point potential with reference to the negative side potential or the positive side potential.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 26, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitaka Iwaji, Ryoichi Takahata, Takahiro Suzuki
  • Patent number: 9295186
    Abstract: An electromagnetic interference reduction assembly for a transmission is disclosed. A transmission casing includes a base and walls extending outwardly away from the base to a distal edge. The transmission casing defines a first cavity between the walls and includes a platform disposed between the walls. A power inverter module is disposed in the first cavity and supported by the platform when in the first cavity. The power inverter module generates electrical noise during operation which produces electromagnetic interference. A lid is attached to the distal edge of the walls to contain the power inverter module inside the first cavity. A grounding member engages the power inverter module and the lid when the lid is attached to the transmission casing to electrically connect the power inverter module to the lid to reduce the electrical noise exiting the first cavity which reduces the electromagnetic interference exiting the first cavity.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 22, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: William T. Ivan, Jeremy B. Campbell, Konstantinos Triantos
  • Patent number: 9212467
    Abstract: The disclosed rotating parking brake control device obviates the need for an operator to operate an emergency-stop switch. A hybrid controller, to which a brake is connected, outputs a drive control signal to a rotating electric motor to control drive of an upper rotating body and also controls the brake by generating a brake release command signal and outputting the brake release command signal to the brake. A pump controller also generates a brake release command signal, and the brake release command signal generated by the pump controller is transmitted to the hybrid controller through an inter-controller signal line. The brake release command signal is outputted to the brake only when the brake release command signal is generated by the hybrid controller and the brake release command signal is transmitted from the pump controller through the inter-controller signal line.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: December 15, 2015
    Assignee: KOMATSU LTD.
    Inventors: Hiroaki Take, Jun Morinaga, Shuki Akushichi
  • Patent number: 9209721
    Abstract: A method for real time power control over a plurality of motor controllers by at least one processor on a computer system may include determining a power load demand from a first set of motors, selecting a combination of motor controllers to match the power load demand, assigning a first set of system-wide priorities, configuring a power switching network to connect the first set of motors to the motor controllers, receiving from a control unit a power request for a motor, determining a priority designation for that motor, assigning a second set of system-wide priorities, determining a second power load demand from a second set of motors, wherein the second plurality of active motors comprises the first plurality of active motors and the first motor, selecting a second combination of motor controllers necessary to match the second power load demand, and configuring the power switching network in accordance with the second set of system-wide priorities.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: December 8, 2015
    Assignee: THE BOEING COMPANY
    Inventors: Eugene V. Solodovnik, Kamiar J. Karimi, Shengyi Liu
  • Patent number: 9209725
    Abstract: A motor drive circuit includes: a first H-bridge circuit including a first source transistor and a first sink transistor connected in series and a second source transistor and a second sink transistor connected in series; a second H-bridge circuit including a third source transistor and a third sink transistor connected in series and a fourth source transistor and a fourth sink transistor connected in series; and a first control circuit to turn on or off the first and second source transistors and the third and fourth sink transistors in a synchronized manner, turn on or off the third and fourth source transistors and the first and second sink transistors in a synchronized manner, and further turn on or off the first and second source transistors and the third and fourth sink transistors in a complementary manner to the third and fourth source transistors and the first and second sink transistors.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: December 8, 2015
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Hiroaki Kawakami
  • Patent number: 9096186
    Abstract: A case for an in-vehicle electronic device is placed in an inclined manner on a top face of a transmission such that at least part of a front side of the case is lower than at least side of a rear side of the case. The case includes a first case, a second case and a rib. The first case is configured to be attached to the top face of the transmission. The second case is attached to a top face of the first case. The rib is on a lower part of a rear face of the second case and includes a top face. The rib extends in a crosswise direction along the lower part of the rear face of the second case toward opposite side faces of the second case. The top face of the rib is inclined downward relative to a horizontal plane toward the rear side of the case.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: August 4, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shuichi Iwata
  • Patent number: 9057433
    Abstract: Disclosed is a method for providing a smooth and stable synchronization operation of a transmission achieved in spite of the sudden change of a vehicle speed in the automated manual transmission (AMT) hybrid vehicle that suppresses a collapse of the synchronization by generating a torque by a motor connected to an input shaft in consideration of changes in inertia of the motor and a control target rotational speed during shifting.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: June 16, 2015
    Assignee: Hyundai Motor Company
    Inventors: Byung Jun Sung, Sang Pil Jang
  • Patent number: 9041320
    Abstract: The invention relates to a portable work apparatus having a housing and a work tool which is driven by an electric motor via a gear assembly. A flywheel which rotates about a rotational axis is arranged in the drive train between the electric motor and the gear assembly, which flywheel is connected fixedly to an output shaft so as to rotate with it, which output shaft protrudes into a gear assembly space and has a drive pinion. The output, shaft and the flywheel are mounted in the housing by two bearing locations, the rotational axis of the flywheel and a motor shaft of the electric motor lying coaxially with respect to one another, and the motor shaft of the electric motor being connected fixedly to the flywheel so as to rotate with it. The electric motor is fixed in the housing exclusively via a torque support.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: May 26, 2015
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Arne Untermann, Markus Maier, Ante Hamersmit, Christian Renz, Johannes Menzel, Ina Schneider, Jochen Luz, Jens Kloeker, Harald Mang, David Hampe, David Kraetzig
  • Patent number: 9035578
    Abstract: The invention relates to a system for coupling at least one DC source (9) to a controllable energy store (2), which is used for controlling and supplying electrical energy to an n-phase electric machine (1), where n?1. In this case, the controllable energy store (2) has n parallel energy supply branches (3-1, 3-2, 3-3), which are connectable firstly to a reference rail (T?) and secondly to in each case one phase (U, V, W) of the electric machine (1). An intermediate circuit (10) is connectable on the output side via a controllable coupling circuit (12) to the energy supply branches (3-1, 3-2, 3-3) of the controllable energy store (2) and on the input side to the at least one DC source (9). An associated operating method provides for a current flow from the at least one DC source (9) into the energy supply branches (3-1, 3-2, 3-3) of the controllable energy store (2) or the phases (U, V, W) of the electric machine (1) to be controlled with the aid of the controllable coupling circuit (12).
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: May 19, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Peter Feuerstack, Erik Weissenborn, Martin Kessler
  • Patent number: 9018862
    Abstract: An alternating current rotating machine control device that shares information among power conversion devices and instruments. A power conversion system has a top level control device, a master station, multiple power conversion devices, instruments (such as a temperature sensor and a pressure sensor), and the like. The top level control device is connected to two of the power conversion devices by a first communication line. These power conversion devices have two or more communication functions, and are connected to a remaining power conversion device, a temperature sensor, and a pressure sensor by a second communication line.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: April 28, 2015
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Nobuo Itoigawa
  • Patent number: 9018866
    Abstract: At least one of a current value and a voltage value of an electrical storage device which is charged and discharged is detected with the use of each of a plurality of sensors. A predetermined process is executed on the basis of the detected values of the plurality of sensors The predetermined process is executed without using the detected values of the sensors in the predetermined process when a difference between a frequency of each of the detected values, which varies with a rotation speed of a motor that operates upon reception of an output power of the electrical storage device, and a resonance frequency of a step-up circuit, which varies with operation of the step-up circuit that steps up an output voltage of the electrical storage device and outputs the stepped-up electric power to the motor, is smaller than a threshold.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: April 28, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinjiro Ashida, Tatsuki Nishimata
  • Patent number: 9013122
    Abstract: Provided is an electric power steering control device which can realize a more appropriate countermeasure against heat in accordance with a thermal characteristic of a component used to supply a motor current. The electric power steering control device for assisting a steering force of a steering wheel of a vehicle including a control unit (10).
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: April 21, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Eiji Iwami, Takashi Goto, Susumu Zeniya, Daisuke Tanaka
  • Patent number: 9013121
    Abstract: Various systems and methods are provided for autotensioning conductors of transmission lines. In one embodiment, among others, an autotensioner system includes tensioning assemblies coupled between a structure and corresponding conductors and a tension controller that controls a tensioning assembly to adjust a tension of the corresponding conductor to within a predefined tolerance of a corresponding tension setpoint. In another embodiment, a method includes receiving a current conductor tension for each of multiple conductors and adjusting the conductor tension of one of the conductors by remotely controlling a corresponding tensioning assembly. The adjustment may be based at least in part upon the current conductor tensions and a tension setpoint.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: April 21, 2015
    Assignee: Southern Company Services, Inc.
    Inventors: Drew Benton McGuire, Dennis Mize, Stephan Hicks
  • Patent number: 8988017
    Abstract: A mechanical resonator with a closed feed-back damping loop is provided. Displacement in the mechanical resonator is opposed with a damping force determined by the closed feed-back loop that comprises a signal processing filter with associated phase adjustment. An oscillation-free configuration that allows high signal amplification is achieved.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: March 24, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Heikki Kuisma
  • Patent number: 8981682
    Abstract: The disclosure relates to General Synchronized Vibration devices that provide haptic feedback to a user and improve the performance of existing vibratory devices. Different actuator types may be employed to provide synchronized vibration, including linear rotary actuators, rotating eccentric mass actuators including interleaved rotating mass actuators, and rocking mass actuators. A controller sends signals to one or more driver circuits to provide adjustment of vibration magnitude, frequency, and direction of the actuators. The system may apply forces onto an object, and a sensor measures a feature(s) of the object. This information is provided to a vibration device controller, which can then modify the vibration waveform to improve overall system performance. Fourier synthesis can be used to approximate arbitrarily shaped waveforms by controlling the phase and frequency of vibration actuators.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: March 17, 2015
    Assignee: Coactive Drive Corporation
    Inventors: Nathan Delson, John Houston, Gabe Graham
  • Patent number: 8981698
    Abstract: An apparatus for opening and/or closing a door of a domestic appliance, such as, for example, an oven, a refrigerator and the like, has a drive apparatus for the automatic opening and/or closing of the door and an actuating device which is operable by a user for activating the drive apparatus in order to open or to close the door.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: March 17, 2015
    Assignee: Diehl AKO Stiftung & Co. KG
    Inventor: Bruno Fuhge
  • Patent number: 8970144
    Abstract: The disclosure relates to a method for operating an electric traction drive system, which comprises an electric motor and a battery with a plurality of battery strings having battery modules. Each battery module is configured to be connected selectively with respect to output terminals of a respective battery string with positive polarization or negative polarization or to be bridged in the respective battery string, such that each battery string is configured to produce an adjustable output voltage. The battery modules are each monitored for proper functioning. When a technical fault in at least one battery module is detected, the at least one battery module is bridged and the traction drive system is transferred to a transition state in which the electric motor continues to be supplied and actuated by the connected battery modules in the battery module string such that a presently generated torque is maintained unchanged.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: March 3, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Holger Fink
  • Patent number: 8963466
    Abstract: A fan array vibration control system may include a fan array having a plurality of fans, and a control unit operatively connected to the fans. The control unit is configured to operate the plurality of fans and detect a phase relationship among the plurality of fans. The control unit is configured to reduce the phase relationship among the plurality of fans in order to reduce vibrations within the fan array.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: February 24, 2015
    Assignee: Huntair, Inc.
    Inventor: Lawrence G. Hopkins
  • Patent number: 8963465
    Abstract: A multi-pressure-quantity fan control system for a computer system is provided. The multi-pressure-quantity fan control system includes a controller. The controller provides a pressure-quantity control signal to a fan of the computer system, in order to set the fan to operate in one of a first pressure-quantity setting and a second pressure-quantity setting, wherein under a predetermined rotating speed, the fan has a first pressure-quantity curve for the first pressure-quantity setting and a second pressure-quantity curve for the second pressure-quantity setting.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: February 24, 2015
    Assignee: Lenovo Enterprise Solutions (Singapore) Pte. Ltd.
    Inventors: Charlie C C Chiu, Edward Y C Kung, Tzongli Lin, Bruce A. Smith
  • Patent number: 8963473
    Abstract: A system comprising a motor controller for providing a plurality of first power signals and a single common second power signal to a motor module comprising a plurality of potentiometers connectable to a plurality of DC-motors. The power signals and feedback signals are sent over a wire interface having less than three wires per motor. A position feedback signal is read when a motor is being powered. The power signals may be DC-signals, pulsed or tri-state signals. The circuit may have a voltage divider consisting of two or three resistors. The actual motor position can be derived from the position feedback signals using one of two formulas or curves. A motor controller, and a method for driving a plurality of DC-motors is also disclosed.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: February 24, 2015
    Assignee: Melexis Technologies NV
    Inventors: Bart Lauwaert, Marc Lambrechts
  • Patent number: 8952636
    Abstract: A data reception unit carries out reception of data, which consists of a combination of switching noise resistant states and switching noise nonresistant states, over a fixed serial communication time a plurality of times for each fixed serial communication period same as the one or a plurality of the switching periods. A serial communication time setting unit sets the serial communication time different from one or a plurality of the switching periods, based on the switching period, the serial communication period, and the communication speed of the data communication device, so that the starts of all of the switching periods within the serial communication time are consistent with the time of reception of the switching noise resistant state at the time of at least one of the reception of the data among a plurality of times of the reception of the data.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: February 10, 2015
    Assignee: Fanuc Corporation
    Inventors: Masaya Tateda, Hiroyasu Sato
  • Patent number: 8947034
    Abstract: A system and a method of automatically determining an electric motor type are provided. An electric motor drive controller is configured to be coupled to an electric motor and to determine running parameters of the drive controller for the electric motor. The drive controller includes a memory device, a processor communicatively coupled to the memory device and to a user interface wherein the processor is configured to execute instructions stored on the memory device that cause the processor to automatically measure electrical characteristics of the electric motor, identify the electric motor using the measured electrical characteristics, load pre defined running parameters selected based on the identification into the memory device, and control an operation of the electric motor using the controller and the loaded running parameters.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 3, 2015
    Assignee: Regal Beloit America, Inc.
    Inventors: Ludovic Andre Chretien, Brian L. Beifus, Michael R. Koller, Norman C. Golm, Jr., Gregory P. Sullivan
  • Patent number: 8941344
    Abstract: In at least one implementation, a vehicle wiper control system includes an actuator and a controller. The actuator is coupled to the wiper and operable to selectively move the wiper from a normal operating position engaged with a vehicle surface to be wiped and to a deployed position not engaged with said vehicle surface. The controller is communicated with the actuator and with a source of weather information regarding one or more weather factors, the controller being operable to cause the actuator to move the wiper from its normal position to its deployed position when one or more of the weather factors are at or beyond a threshold for said one or more weather factors. This may cause, for example, a wiper blade to be moved off of a vehicle surface if the current or predicted weather is indicative of possible snow fall or ice formation.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: January 27, 2015
    Assignee: Chrysler Group LLC
    Inventor: Chester Wilson
  • Patent number: 8928269
    Abstract: A power system that supplies electrical power to at least one load is disclosed. The power system may include an electrical power generator, current sensors configured to provide current signals representative of currents output from the electrical power generator to the load, and voltage sensors configured to provide voltage signals representative of voltages output from the electrical power generator to the load. The power system may also include a controller configured to receive the current signals and the voltage signals, compare the current signals and the voltage signals to a predetermined map, determine whether a short circuit exists inside the electrical power generator based on the comparison, and send a command to turn off the electrical power generator when the short circuit exists inside the electrical power generator.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 6, 2015
    Assignee: Caterpillar Inc.
    Inventors: Paul Curtis Pawelski, Ryan Christopher Byrd
  • Patent number: 8917039
    Abstract: The car power source apparatus is provided with a driving battery having a plurality of connected batteries, battery-switches that connect the driving battery to the vehicle-side load, a control circuit that controls the battery-switches, and an auxiliary battery that supplies operating power to the control circuit power supply line. The power source apparatus is provided with a supplementary power supply circuit that supplies operating power to the control circuit power supply line from batteries in the driving battery to maintain control circuit operation in the event of an auxiliary battery voltage drop condition. In an auxiliary battery voltage drop condition, the supplementary power supply circuit supplies operating power to the control circuit power supply line and maintains control circuit operation to maintain control of the battery-switches.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: December 23, 2014
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Masaki Yugo
  • Patent number: 8912745
    Abstract: A method for operating a drive motor of a drive system, including the following: providing a control variable, which is ascertained as a function of one or multiple state variable(s) of the drive system and as a function of a default variable, to an output stage for operating the drive motor; reading the control variable previously provided to the output stage back from the output stage to obtain a read-back control variable; ascertaining a back-calculated torque from the read-back control variable; comparing the back-calculated torque and a predefined monitoring torque; and providing the control variable or an alternative control variable ascertained from the monitoring torque to the output stage as a function of a result of the comparison for the purpose of operating the drive motor.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: December 16, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Christian Ruland, Oliver Heim
  • Patent number: 8907605
    Abstract: A circuit structure applied to a motor and enabling upgraded MOS transistor heat dissipation ability is disclosed. The circuit structure includes a motor driving unit and a signal processing unit. The signal processing unit is connected to the motor driving unit for maintaining a first and a third switch of the motor driving unit at a constant turn-on voltage and boosting turn-on voltages of a second and a fourth switch of the motor driving unit, so as to effectively upgrade the heat dissipation ability of the first, second, third and fourth switches.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: December 9, 2014
    Assignee: Asia Vital Components (China) Co., Ltd.
    Inventors: Bao-Lin Yao, Qing-Wu Hu
  • Patent number: 8907609
    Abstract: A method of monitoring a fan of a second electronic device. A first electronic device controls a baseboard management controller (BMC) of the second electronic device to return parameter values, the returned parameter values including temperature values of the second electronic device, and actual speed values of a fan of the second electronic device. The first electronic device records the returned parameter values and returned time of the returned parameter values. Upon acquiring standard speed values corresponding to the temperature values, the first electronic device draws a graph representing a relation between the actual speed values and the determined standard speed values corresponding to the returned time to monitor the fan.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: December 9, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Feng-Chi Yang