Limitation Of Motor Load, Current, Torque Or Force (e.g., Preventing Overload) Patents (Class 318/434)
  • Patent number: 11364604
    Abstract: An electric power tool includes an electrical motor adapted to drive a rotating shaft. The electric motor is adapted to be fed with a pulsed current where the pulsed current includes a main current pulse (A) in a first direction driving the rotating shaft in a first direction and adapted to provide a current (C) in an opposite direction following the main current pulse to retract the electrical power tool. The pulsed current prior to the current (C) in the opposite direction includes a first pre-pulse current pulse (B) in the same direction as the current in the opposite direction and of a magnitude lower than the current (C). The pulsed current prior to the main pulse includes a second pre-pulse current pulse (D) which is in the same direction as the main current pulse and of a magnitude lower than the main current pulse.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: June 21, 2022
    Assignee: ATLAS COPCO INDUSTRIAL TECHNIQUE AB
    Inventor: Adam Klotblixt
  • Patent number: 11336219
    Abstract: The disclosure relates to an electric machine and in particular to the monitoring of the electric machine for the presence of a fault, (e.g., in the stator windings). A monitoring unit is provided, wherein the monitoring unit measures the multiphase electrical time signals transmitted from or to the machine and with the aid of a Hilbert filter determines substantially in real time the envelopes and the phase positions of the individual phases of the time signal. The envelopes corresponding to the different phases or the corresponding phase positions are compared with one another by way of forming differences and, in the event that one or more of the differences deviate(s) from a specified expectation value, the presence of a fault is inferred. The approach allows significantly increased operational reliability of the electric machine to be achieved in particular.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: May 17, 2022
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Christian Stanek, Johannes Heissenberger, Dieter Cramer
  • Patent number: 11336082
    Abstract: The invention relates to a system and method for protecting against faults between turns in excitation windings of synchronous machines with static excitation, which is based on comparison between the excitation intensity measured and the theoretical excitation current calculated for that operating point using the voltage and current measurements in the armature.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: May 17, 2022
    Assignee: UNIVERSIDAD POLITÉCNICA DE MADRID
    Inventors: Carlos Antonio Platero Gaona, Miguel Ángel Pardo Vicente, Emilio Rebollo López, Ricardo Granizo Arrabé
  • Patent number: 11316450
    Abstract: A brushless motor includes: a stator having a three-phase winding; a rotor that has a permanent magnet; an inverter that supplies an AC current to the three-phase wiring by turning on or turning off a plurality of switching elements; and a control part that controls an ON or OFF state of the plurality of switching elements by switching a power distribution pattern that represents a change of a power distribution state of each phase of the three-phase wiring in response to a rotation of the rotor to a low-speed power distribution pattern in use for a low-speed power distribution control or a high-speed power distribution pattern in use for a high-speed power distribution control, wherein the control part switches the power distribution pattern to the low-speed power distribution pattern in a case where a rotation speed of the rotor is less than a predetermined threshold value, and the control part switches the power distribution pattern to the high-speed power distribution pattern when a state in which a load
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: April 26, 2022
    Assignee: Mitsuba Corporation
    Inventor: Takeshi Ikeda
  • Patent number: 11276889
    Abstract: A device for capturing operating data of a motor-driven tool includes a capture and/or evaluation device, an operating data memory, and/or a communication interface. These components draw electric power from an electrochemical energy store during operation. An operating mode control device operates the components at a temperature above a temperature limit value in a normal temperature operating mode and at a temperature equal to or below the temperature limit value in a low temperature operating mode different from the normal mode, wherein less electric power is drawn in the low temperature operating mode.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: March 15, 2022
    Assignee: Andreas Stihl AG & Co., KG
    Inventors: Kay-Steffen Gurr, Andre Vaas
  • Patent number: 11272802
    Abstract: A motor driven system for raising and lowering a window covering executes motor ramp trajectory speed control. The motor ramp trajectory limits acceleration of an external motor from the idle (stationary) state to full operating speed, and limits deceleration of the motor from full operating speed back to the idle state. This function reduces stresses on a continuous cord loop drive mechanism. A control system manages solar heating effects in response to sunlight entrance conditions such as system sensor outputs, external weather forecasts, and other data sources. The system automatically opens or close the window covering to increase or decrease admitted sunlight under appropriate conditions. The input interface of the control system includes a visual display and input axis, which are aligned vertically if the window covering mechanism raises and lowers the window covering, and are aligned horizontally if the window covering mechanism laterally opens and closes the window covering.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: March 15, 2022
    Assignee: RYSE INC.
    Inventors: Trung Duc Pham, Alan Wing Hor Cheng, Marc Rashad Bishara, Clifton Pereira
  • Patent number: 11259439
    Abstract: A low-voltage switching device includes a housing in which power-electronic components are arranged in the region of ventilation of a fan. In an embodiment, the power-electronic components operate under temperature regulation by virtue of an air flow that is guided asymmetrically proceeding from the fan. Therefore, the low-voltage switching device can be operated at a nominal device current range of up to 650 A as the result of the asymmetrically guided air flow.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: February 22, 2022
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Peter Kaesbauer, Norbert Reichenbach
  • Patent number: 11235799
    Abstract: Systems and methods are provided for limit cycle detection and cessation. A control system generates a drive signal with at least one drive component. An actuator effects a response to the drive signal and a sensor measures the response. Characteristics of the drive signal and of the drive components are accessed by a controller. The characteristics are compared to a predetermined set of characteristics. When the characteristics fall within the predetermined set of characteristics, a magnitude of at least one of the characteristics is evaluated. When the magnitude exceeds a predetermined value indicative of the limit cycle, an action is undertaken to stop the limit cycle.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: February 1, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Kenneth L. Oblizajek, John D. Sopoci
  • Patent number: 11225401
    Abstract: A method and a circuit for controlling electric power delivered to an electric motor are disclosed. A forward control signal is transmitted when a forward command is received while a forward latch is not set. The forward latch is set and the forward control signal is stopped when a power level of the motor exceeds a threshold while the forward command is received. The forward latch is reset and a reverse control signal is transmitted when a reverse command is received. The reverse and forward control signals are not transmitted when no command is received. A reverse latch is optionally set when the power level exceeds the threshold while the reverse command is received. A winch connected to the motor has a cable wound thereon in a forward direction of the motor and unwound therefrom in a reverse direction of the motor, as controlled by the circuit.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: January 18, 2022
    Assignee: SOUCY INTERNATIONAL INC.
    Inventors: Charles Carignan, Gervais Gagnon
  • Patent number: 11228306
    Abstract: An over-power protection circuit for a MOSFET includes an over-current protection circuit and a current limit setting circuit, and an over-power protection circuit configured to continuously monitor a voltage across the MOSFET being protected to prevent over-power conditions, and to dynamically determine a maximum current limit based on the monitored voltage and a pre-set maximum power limit.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: January 18, 2022
    Assignee: Diodes Incorporated
    Inventor: Wei Wu
  • Patent number: 11209849
    Abstract: A circuit includes a regulation module having a threshold input to receive a clamp threshold voltage and a feedback input to monitor a swing-limited output voltage. The regulation module generates a difference signal that indicates a difference between the clamp threshold voltage and the swing-limited output voltage. A current compensation module includes a clamp port and an input port. The clamp port to controls the swing-limited output voltage and the input port receives the difference signal. The clamp port generates an adjustment current to control the swing-limited output voltage based on the difference signal. An adjustment network receives an input voltage and the adjustment current from the clamp port. The adjustment current to generate a voltage across the adjustment network such that the swing-limited output voltage at the clamp port is adjusted within a voltage range of the input voltage.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: December 28, 2021
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Timothy T. Hsia, Victor K. Lee
  • Patent number: 11196366
    Abstract: An automatic correction method for a pin connection and a motor driving device are provided. The automatic correction method includes: sensing a driven motor to generate a plurality of sensing results corresponding to a plurality of pin connection modes between a Hall sensor and a motor controller, and counting a number of changes of the plurality of sensing results to obtain a plurality of numbers of external interruptions corresponding to the plurality of pin connection modes; obtaining a correct pin connection mode in the plurality of pin connection modes according to the plurality of numbers of external interruptions; and operating the Hall sensor and the motor controller to be electrically coupled via the correct pin connection mode.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: December 7, 2021
    Assignee: Acer Incorporated
    Inventors: Chu-Hsiang Hsu, Hao-Ming Chen
  • Patent number: 11184487
    Abstract: The image forming apparatus includes the power supply board for generating a +24V power supply voltage and a driver board for driving a load for forming an image, and an engine control board for controlling an operation of a driver board. The driver board includes a fuse which receives the 24V power supply voltage supplied from the power supply board. The driver board drives the load by +24V_FU1 voltage output from the fuse. The engine control board identifies, when an abnormality occurs in an operation of the load, a board that is a cause of the abnormality according to a voltage value of the +24V_FU1 voltage and the voltage value of the power supply voltage.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: November 23, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuji Obata, Tetsuhiro Yoshimoto
  • Patent number: 11128290
    Abstract: Systems, methods, techniques and apparatuses of short circuit protection are disclosed. One exemplary embodiment is a method for protecting a semiconductor switch comprising receiving a measurement corresponding to an electrical characteristic of the semiconductor switch; determining a semiconductor switch resistance value using the received measurement; estimating a junction temperature of the semiconductor switch using the semiconductor switch resistance value; determining a short circuit voltage threshold using the estimated junction temperature; comparing the short circuit voltage threshold to a test voltage corresponding to a drain-source voltage of the semiconductor switch; determining a short circuit condition is occurring in response to comparing the short circuit voltage threshold and the test voltage; and opening the semiconductor switch in response to determining the short circuit condition is occurring.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: September 21, 2021
    Assignee: ABB Schweiz AG
    Inventors: Eddy Aeloiza, Arun Kumar Kadavelugu
  • Patent number: 11124075
    Abstract: A dump truck 100 including: an engine 1; a generator 10 driven by the engine 1; and a pair of driving wheels 3L and 3R arranged to the left and right of a vehicle body frame 7 includes: a traveling electric motor 12L including a plurality of electric motors 12La, 12Lb, and 12Lc that are coupled to the driving wheel 3L and simultaneously drive the driving wheel 3L; and a traveling electric motor 12R including a plurality of electric motors 12Ra, 12Rb, and 12Rc that are coupled to the driving wheel 3R and simultaneously drive the driving wheel 3R. Thereby, drive systems corresponding to loads of dump trucks or the like can be configured using identical components.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: September 21, 2021
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Satoru Kaneko, Shinji Sugimoto, Takayoshi Nakamura, Tadashi Osaka, Masatsugu Arai, Naoki Fukuda
  • Patent number: 11063542
    Abstract: A motor driving apparatus that drives a motor includes a controller that outputs a driving signal indicating a driving amount of the motor, a driver including a plurality of inverter circuits, each of which supplies an electric current supplied from an external power supply to the motor based on the driving signal outputted from the controller, and first temperature sensors, each of which measures a temperature of a separate one of the plurality of inverter circuits. A first temperature difference is defined as the temperature of one of the inverter circuits minus the temperature of a remaining one of the inverter circuits. The controller, when the first temperature difference is equal to or greater than a predetermined difference value at a specific time point, outputs a driving signal indicating a second driving amount smaller than a first driving amount to the one of the inverter circuits.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: July 13, 2021
    Assignee: Nidec Corporation
    Inventors: Tsuyoshi Kadowaki, Hiroki Fujiwara
  • Patent number: 11063544
    Abstract: An inverter device includes: an inverter, a power supply current detection sensor, a phase current detection sensor, a three-phase voltage command calculator, and an inverter on/off signal generation unit. The phase current detection sensor detects a phase current in one phase of the inverter. The inverter on/off signal generation unit generates on/off signals based on the phase voltage commands. The three-phase voltage command calculator uses the power supply current and the phase current detected by the power supply current detection sensor and the phase current detection sensor, respectively, so as to calculate phase voltage commands directed to the inverter, and at a center time point of a period in which an upper arm switching element corresponding to one phase out of two phases for which the phase current detection sensor is not provided is on, and lower arm switching elements corresponding to the other two phases are on.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: July 13, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa, Isao Kezobo
  • Patent number: 11056991
    Abstract: A method and system for controlling and regulating operation of a multi-phase rotary electric machine in a manner that minimizes power loss under partial load conditions is described. This includes an instruction set that is executable to determine a torque command and a rotational speed of the electric machine, determine a peak torque per loss parameter for the electric machine based upon the rotational speed, and determine a second torque parameter for the electric machine based upon the rotational speed. A modulated torque command for controlling the electric machine is determined based upon the peak torque per loss parameter and the second torque parameter, wherein the electric machine generates an average torque that is equivalent to the torque command when operating in response to the modulated torque command. The inverter is controlled to operate the electric machine based upon the modulated torque command.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: July 6, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Alireza Fatemi, Thomas W. Nehl
  • Patent number: 11040673
    Abstract: A control apparatus for a motor generator in a vehicle includes a first control unit that determines a target torque using a redundant signal and a non-redundant signal, a monitoring unit that determines a monitoring target torque using the redundant signal, and a fail-safe determining unit. The fail-safe determining unit determines the execution of first fail-safe processing when a difference between the target torque and the monitoring target torque is equal to or more than a predetermined first upper limit threshold value or equal to or less than a first lower limit threshold value, and determines the execution of second fail-safe processing when the difference is equal to or more than a predetermined second upper limit threshold value which is smaller than the first upper limit threshold value or equal to or less than a second lower limit threshold value which is smaller than the first lower limit threshold value.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: June 22, 2021
    Assignee: DENSO CORPORATION
    Inventor: Shigeru Kamio
  • Patent number: 11031894
    Abstract: A motor system comprises a device having a plurality of conductors coupled to a plurality of isolated connection bars, wherein the plurality of conductors is divided symmetrically into a plurality of conductor groups, and all conductors in a conductor group are connected to a connection bar, a first power converter group connected between a first power source and a first conductor group, a second power converter group connected between a second power source and a second conductor group, wherein the first group of conductors and the second group of conductors are configured such that a charge balance between the first power source and a second power source is achieved and a rotor magnetically coupled to a stator.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: June 8, 2021
    Assignee: Quanten Technologies, Inc.
    Inventors: Hengchun Mao, Xuezhong Jia
  • Patent number: 11005404
    Abstract: In a motor driving apparatus having an inverter for driving a motor capable of switching between a star connection and a delta connection, when currents detected by winding current detecting elements detecting currents flowing through windings become excessive, the inverter is made to stop. Moreover, inverter output currents are calculated after removing a circulating current component at the time of the delta connection, from the winding currents detected by the winding current detecting elements, and the inverter is controlled using the calculated inverter output currents. Because over-current protection is performed based on the detected values of the winding currents, it is possible to prevent demagnetization taking account oSf the circulating current. Also, the inverter control is prevented from being affected by the circulating current in the delta connection. Accordingly, it is possible to reduce the number of the current detecting elements, and perform the over-current protection and control properly.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinya Toyodome, Takashi Yamakawa, Koichi Arisawa, Keisuke Uemura, Kenji Iwazaki
  • Patent number: 10972033
    Abstract: A motor control device including: a power supply voltage detection unit configured to detect a power supply voltage; a rotational angular velocity detection unit configured to detect a rotational angular velocity of the motor; a command value calculation unit configured to calculate a q-axis and d-axis current command values; a gain computation unit configured to compute, based on an upper limit value of power supply current supplied from a power supply to the motor, the power supply voltage, the rotational angular velocity, the q-axis current command value, and the d-axis current command value, a limit gain reducing the power supply current to the upper limit value or lower by limiting the q-axis current command value and the d-axis current command value; and a driving circuit configured to drive the motor, based on the q-axis current command value and the d-axis current command value limited by the limit gain.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: April 6, 2021
    Assignee: NSK LTD.
    Inventor: Yasutoshi Miki
  • Patent number: 10965226
    Abstract: A power conversion apparatus and a power conversion system that ensure safety capable of reliably performing an emergency stop and have a failure monitoring function are provided. The command signal for emergency stop of the power conversion apparatus between the supervisory monitoring and control device and the power conversion apparatus is to be a dual system, and the supervisory monitoring and control device monitors a performance of emergency stop of the power conversion apparatus by delaying the start of operation for a predetermined time from the operation command signal output. The supervisory monitoring and control device check a soundness of the power conversion apparatus by generating a test operation signal during that delay period.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: March 30, 2021
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Hiromitsu Suzuki
  • Patent number: 10944392
    Abstract: In a switch circuit for use in a vehicle, conduction between a drain electrode and a gate electrode of each of a first main transistor and a second main transistor is switched on or off depending on a voltage between the gate electrode and a source electrode. A first surge protection device is connected between the drain electrodes of the first main transistor and the second main transistor. The first surge protection device keeps a voltage that is applied to the first surge protection device at a first predetermined voltage or lower. A sub transistor is provided between the gate electrodes and the source electrodes of the first main transistor and the second main transistor. The sub transistor is turned on when the first main transistor and the second main transistor are turned off.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 9, 2021
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Yusuke Yano, Katsuma Tsukamoto
  • Patent number: 10905902
    Abstract: A fan filter device (50) for a respirator (1) includes an air inlet (54) for unfiltered air and an air outlet (56) for the discharge of filtered air. A fan unit (60), for aspirating air through the air inlet, includes a fan motor (62) and a fan sensor (64). The fan sensor is designed for detecting at least one operating parameter of the fan motor. The fan filter device further includes a filter unit (31) for receiving a filter (30) for filtering the aspirated air and an air flow sensor (58) for detecting at least one flow parameter of the filtered air flowing through the air outlet. A control unit (66) is configured to monitor the fan motor as a function of the at least one flow parameter and the at least one operating parameter. A respirator and method for operating such a fan filter device are also provided.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: February 2, 2021
    Assignee: Dräger Safety AG & Co. KGaA
    Inventors: Björn Ehler, Thomas Pernot, Achim Volmer
  • Patent number: 10897220
    Abstract: The present invention includes: a control initiation-stop determiner which receives an initiation-stop request signal for controlling initiation and stop of a motor and information on the number of revolutions of the motor and which outputs a state signal for switching a state of a drive voltage among three states of control stop, control initiation, and control start; and a drive voltage controller which gradually increases a phase current supplied to the motor by using a PWM signal while the state signal causes the state of the drive voltage to transition from control stop to the control initiation and then to the control start.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: January 19, 2021
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Hiromichi Kawamura
  • Patent number: 10862385
    Abstract: The invention relates to a linear motor drive system for the acceleration of a vehicle within an acceleration section on a travel route. The linear motor drive system comprises a stator with at least two stator elements arranged along the travel route, the stator elements are assembled to form at least two stator groups. Moreover, the linear motor drive system comprises a rotor, which is secured on the vehicle. Each stator group is permanently connected to its own at least one energy transformer for its power supply, which can be individually actuated. At least two of the stator groups are arranged such that the rotor can interact at the same time with the at least two stator groups. The invention furthermore relates to the use of the linear motor drive system for the acceleration of a vehicle 3 for passenger transportation in an amusement park.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: December 8, 2020
    Assignee: INDRIVETEC AG
    Inventors: Eric Julen, Martin Vinzens
  • Patent number: 10843647
    Abstract: A method for determining a cell current limit for a traction battery and for an onboard network that is supplied with power by the traction battery in a motor vehicle with, respectively, a cell and onboard network voltage limiter using an integral feedback loop calculating a respective integral current term. The integral feedback loops of the two voltage limiters are interdependent, the integral current terms of the cell voltage limiter being transmitted to the integral feedback loop of the network voltage limiter and the integral terms of the voltage limiter of the network being transmitted to the integral feedback loop of the cell voltage limiter so as to determine a battery current limit that is common to the two limiters.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: November 24, 2020
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Jérôme Lachaize
  • Patent number: 10809311
    Abstract: Disclosed is a device for detecting a short circuit of an H bridge, the device including a printed circuit including a power trace connecting the H bridge to a first connection area intended to be connected to a first multipin connector connected to a power supply terminal of a power source, and an earth trace connecting the H bridge to a second connection area intended to be connected to a second multipin connector connected to a reference terminal of the power source. The device further includes a measurement unit for measuring two potentials at two different points of the first connector, as well as two potentials at two different points of the second connector, and a processor configured to detect a short circuit of the H bridge by comparison of the potentials.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: October 20, 2020
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Christian Pradelles, Julien Mouret
  • Patent number: 10777994
    Abstract: A display device includes: a timing controller generating and supplying first timing control signals, a level shifter generating and supplying gate control signals using the first timing control signals, a gate driver separately driving gate lines of a panel using the gate control signals, and an output circuit outputting the gate control signals, the level shifter including an overcurrent protection circuit (OPC) connected to the output circuit, the overcurrent protection circuit sensing overcurrent generation in the level shifter and overcurrent generation in a target circuit through the output circuit to output an overcurrent protection signal, wherein the level shifter: sets a time period to be a non-sensing time period, turns off a sensing operation of the OPC during the non-sensing time period, and turning on the sensing operation of the OPC during other periods, and wherein the OPC: turns on the sensing operation, and senses the overcurrent generation.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: September 15, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Min-Gyu Park, Seong-Heon An
  • Patent number: 10767410
    Abstract: A braking device for a movable door wing comprising an electric motor operated as a generator wherein its motor shaft is rotatable by a movement of the door wing and which outputs a motion-dependent motor voltage, and a braking circuit to which the motor voltage is applied or can be applied and via which the electric motor can be short-circuited in order to dampen a movement of the door wing. In addition, it is provided that the braking device comprises a safety device with a current sensor which is designed to detect amperage generated by the electric motor. The safety device is designed to modify the braking circuit depending on the detected amperage in such a way that upon reaching or exceeding a predetermined or predeterminable overload amperage, the current in the braking circuit is reduced.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: September 8, 2020
    Assignee: Geze GmbH
    Inventors: Matthias Hucker, André Sebastiaan Maria Jansen
  • Patent number: 10737798
    Abstract: A method and system for providing corrective action to a rotorcraft experiencing motor failure is provided. Included in the method and system are embodiments that receive feedback from sensors directed at measuring a state of motors used to provide lift to the rotorcraft. The method and system also describe embodiments for determining that there is a malfunctioning motor, and furthermore, the appropriate corrective action for responding to the malfunctioning motor. In some embodiments, the method and system are configured to reduce power to the malfunctioning motor while simultaneously adjusting power supplied to the remaining motors such that changes in total thrust and net torque are minimized.
    Type: Grant
    Filed: September 10, 2017
    Date of Patent: August 11, 2020
    Inventor: Ansel Misfeldt
  • Patent number: 10727755
    Abstract: A method of controlling at least one switching module having commutation cells which are associated with a regulating winding of a regulating transformer, the commutation cells including: a first and second switching element each having two thyristors in antiparallel connection.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: July 28, 2020
    Assignee: MASCHINENFABRIK REINHAUSEN GMBH
    Inventors: Stefan Engel, Rik W. de Doncker
  • Patent number: 10705145
    Abstract: A method of extracting impedance parameters of a three-phase motor utilizes a five-terminal network including first to third winding wires and opposite shaft ends. The method includes connecting two terminals, selected from among the winding wires and the shaft ends, to input and output terminals in order to measure voltage and current of the terminals and to extract input impedance parameters of the five-terminal network, extracting conversion parameters including voltage and current transfer matrices in a common mode, in which the winding wires are commonly connected to the input and output terminals, and in a differential mode, in which the winding wires are differentially connected to the input and output terminals, and calculating impedance parameters in a mixed mode, in which transfer impedance components for the shaft ends in the common mode and the differential mode are mixed, using the extracted input impedance parameters and conversion parameters.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: July 7, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation, UNIST (Ulsan National Institute of Science and Technology)
    Inventors: Woong Chan Chae, Sang Hoon Moon, Jung Shik Kim, Young Jin Shin, Hyoung Jun Cho, Young Gon Ryu, Ki Jin Han
  • Patent number: 10693456
    Abstract: A method and an electronic circuit are disclosed. The method includes driving a transistor device in an on-state by applying a drive voltage higher than a threshold voltage of the transistor device to a drive input, and adjusting a voltage level of the drive voltage based on a load signal that represents a current level of a load current through the transistor device, wherein the current level is an actual current level or an expected current level of the load current.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 23, 2020
    Assignee: Infineon Technologies AG
    Inventors: Werner Roessler, Anton Mauder
  • Patent number: 10676052
    Abstract: A power distributor, in particular for an on-board network of a motor vehicle, has an intermediate tap, two power outputs, and one each switching unit for each power output. A switch is provided for a need-based blocking of the associated power output. Each of the switching units is designed in such a way that a blocking of the associated power output takes place, if, in the event a voltage drop at the associated power output and/or at the intermediate tap below a first setpoint value, an error case is determined. The greater the corresponding voltage drop, the faster the blocking of the associated power output takes place.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: June 9, 2020
    Assignee: LEONI Bordnetz-Systeme GmbH
    Inventors: Sebastian Doernbach, Peter Grabs, Ilja Uljanow
  • Patent number: 10669112
    Abstract: To control a winding drive current of a motor based on a command phase representing a target phase of a rotor of the motor, a motor control apparatus includes a filter circuit, a phase determiner, and a controller. A current value of the drive current flowing through the winding is obtained at a predetermined period. The filter circuit reduces a harmonic component in a fundamental frequency of the drive current included in a signal indicated by the obtained current value. The phase determiner determines a rotation phase of the rotor based on a filter processed signal. The controller controls the winding drive current to reduce a deviation between the command phase and the determined rotation phase. The filter circuit reduces a harmonic component from a signal indicated by current values of which a number is not greater than a number of the current values obtained at the predetermined period.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: June 2, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shingo Kitamura
  • Patent number: 10671154
    Abstract: One or more embodiments of the present disclosure include a system for providing dynamic virtual reality ground effects. The system includes a user interface surface and multiple motors coupled to the user interface surface. At least one of the motors is coupled to a virtual reality component of an electronic device. A first motor of the multiple motors is driven by movement of the user interface surface and is used to generate a feedback electrical signal in response to the movement of the user interface surface. A second motor of the multiple motors is driven using the feedback electrical signal.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: June 2, 2020
    Assignee: DISNEY ENTERPRISES, INC.
    Inventors: Steven M. Chapman, Joseph Popp, Alice Taylor, Samy Segura, Mehul Patel
  • Patent number: 10663518
    Abstract: An abnormality determining apparatus for a motor driven mechanism includes circuitry. The circuitry is configured to acquire time-series data with respect to an input to and an output from a motor which drives the motor driven mechanism, detect data abnormality in the time-series data, and determine, based on the data abnormality, whether mechanical abnormality in the motor driven mechanism occurs.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: May 26, 2020
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventor: Yasufumi Yoshiura
  • Patent number: 10648232
    Abstract: Methods and apparatus to control an architectural opening covering assembly are disclosed herein. An example architectural opening covering assembly includes a tube and a covering coupled to the tube such that rotation of the tube winds or unwinds the covering around the tube. A motor is operatively coupled to the tube to rotate the tube. The example architectural opening covering assembly also includes a gravitational sensor to generate tube position information based on a gravity reference. The example architectural opening covering assembly further includes a controller communicatively coupled to the motor to control the motor. The controller is to determine a position of the covering based on the tube position information.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: May 12, 2020
    Assignee: Hunter Douglas Inc.
    Inventors: Wendell Colson, Dan Fogarty, Paul G. Swiszcz, William Johnson
  • Patent number: 10637380
    Abstract: Provided is a safety power window controlling method including an operation in which a ripple current detector detects a ripple current by removing high-frequency noise from an output current signal of a four-pole stator motor; an operation in which an amplifier receives a ripple current as a first input signal, receives a reference voltage as a second input signal, and outputs an amplified current signal obtained by amplifying the first input signal to a level of the reference voltage; and detecting the amplified current signal output by the amplifier as a valid signal by using at least two preset reference values.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: April 28, 2020
    Assignee: DY AUTO Corporation
    Inventors: Dong Hun Son, Bo Sung Jo
  • Patent number: 10633901
    Abstract: A braking device for a movable door wing comprising an electric motor operated as a generator wherein its motor shaft is rotatable by a movement of the door wing and which outputs a motion-dependent motor voltage, and a braking circuit to which the motor voltage is applied or can be applied and via which the electric motor can be short-circuited in order to dampen a movement of the door wing. In addition, it is provided that the braking device comprises a safety device with a current sensor which is designed to detect amperage generated by the electric motor. The safety device is designed to modify the braking circuit depending on the detected amperage in such a way that upon reaching or exceeding a predetermined or predeterminable overload amperage, the current in the braking circuit is reduced.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: April 28, 2020
    Assignee: Geze GmbH
    Inventors: Matthias Hucker, André Sebastiaan Maria Jansen
  • Patent number: 10630790
    Abstract: Systems and methods for presenting information are disclosed. One aspect comprises receiving a request for information. First data can be provided in response to the request if a parameter is equal to or exceeds a comparator element, wherein the parameter relates to one or more of abandoned data transmissions and completed data transmissions. Second data can be provided in response to the request if the comparator element exceeds the parameter.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: April 21, 2020
    Assignee: COMCAST CABLE COMMUNICATIONS, LLC
    Inventors: John Riviello, Daniel Freiman
  • Patent number: 10608576
    Abstract: A motor control apparatus that estimates a temperature of a temperature estimation target element at a time of energizing the motor and drives a motor by controlling an electric power is provided. The motor control apparatus includes a primary delay arithmetic unit that outputs a primary delay response as an amount of temperature change, a sensor value adder that adds a sensor value of a temperature sensor to the amount of temperature change, an offset adder that adds an offset temperature to an output of the sensor value adder, a response constant determination portion that determines the gain and the time constant, and an offset temperature determination portion. At least one of the response constant and the offset temperature is changed according to a supply voltage or an input voltage.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: March 31, 2020
    Assignee: DENSO CORPORATION
    Inventor: Go Endoh
  • Patent number: 10608564
    Abstract: A method and system for monitoring an engine driven generator system (GMS) is provided herein. The system self-configures across generator types and manufacturers via a learning algorithm. Additional sensors are included in the system to provide a robust set of sensor data. Data analysis employed includes comparison to threshold levels, trending of historical data, and Wavelet analysis. A graphical touch screen is provided to users for both controlling the GMS and for viewing results. Monitoring results include operating conditions, existing faults, and warnings of undesirable conditions. Ethernet connections afford review of real time data, diagnostic feedback, and prognostic information at a central location. A sleep state of the GMS conserves generator battery life.
    Type: Grant
    Filed: November 26, 2017
    Date of Patent: March 31, 2020
    Assignee: Williams RDM, Inc.
    Inventors: Warren B Johnson, Christopher M Stimek, Peter C Gardner
  • Patent number: 10607457
    Abstract: An electronically controlled, motor-driven device is able to issue locally perceptible acoustic alerts by causing the electric motor to vibrate, which in embodiments can include vibrations at a resonant frequency of the device. Embodiments encode information relevant to the alert as amplitude and/or frequency modulations of the acoustic vibrational alerts. The motor can be an AC motor or a DC motor. In embodiments, the motor-driven device is an electronically controlled valve actuator or electronically controlled pump. The device can be in communication with a remote monitoring station, or the electronic controller can be remotely located.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: March 31, 2020
    Assignee: Flowserve Management Company
    Inventors: Mark D Ollander, Daniel E Carlson, Michael Adam Rumore
  • Patent number: 10581351
    Abstract: A circuit comprises a multiphase gate driver to be coupled to a multiphase inverter for driving a multiphase motor. For each phase, the multi-phase gate driver is to, in accordance with a pulse width modulation (PWM) control signal, turn on and off a high side transistor of a given pair of high and low side transistors of the multiphase inverter, discontinue the PWM control signal turn to the high side transistor of the given pair and turn off the high side transistor of the given pair, and turn on the low side transistor of the given pair until a current level through the low side transistor falls below a threshold, at which time, turn off the low side transistor.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: March 3, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Manu Balakrishnan
  • Patent number: 10549396
    Abstract: An object of the present invention is to provide an electric power tool capable of automatically changing the rotating speed of an electric motor in accordance with operation conditions. The electric power tool 11 which carries out an operation of polishing, peel-off, cutting, or the like by swinging a tip tool 13 attached to a tool retaining 31 part within the range of predetermined angles by the drive power of the electric motor 12, wherein the electric power tool has a control device configured to indirectly detect the load of the tip tool from a current value, and to control the rotating speed of the electric motor 12 to a maximum rotating speed and a minimum rotating speed on the basis of the load of the tip tool 13.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: February 4, 2020
    Assignee: KOKI HOLDINGS CO., LTD.
    Inventors: Kenichi Matsunaga, Yoshikazu Kawano
  • Patent number: 10547263
    Abstract: A motor control unit controls a driving current that flows through a coil of a motor to be driven, by controlling a PWM signal supplied to an H bridge circuit constituted by FETs. A current value generation unit detects a driving current based on a voltage that occurs across a current detection resistor, and corrects a detection value by using a first or second correction value. The current value generation unit, if the driving current is detected in the H period of the PWM signal, corrects the detection value by using the first correction value, and if the driving current is detected in the L period of the PWM signal, corrects the detection value by using the second correction value that has a polarity different from a polarity of the first correction value.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: January 28, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroki Sato
  • Patent number: 10530278
    Abstract: A method named as Magnet Shifting to reduce torque ripple of permanent magnet synchronous motor is disclosed. A way of reasonably choosing the repeating unit of magnetic pole, the shifting ways and the shifting angle calculation of the first and second magnet shifting is described, which are carried on the repeating unit of magnetic poles individually or repeatedly to improve the performance of the motor. The method can be applied to surface, surface-inset and inner-embedded permanent magnet motors, which can reduce torque ripple caused by different torque components, including cogging torque, reluctance torque or permanent magnet torque. It also can quickly calculate the shifting angle of the magnetic pole by choosing repeating unit reasonably. Magnet shifting can effectively enhance the sinusoidal degree of back electrodynamic force (back-EMF) waveform, where the repeating units can offset the torque ripple between the maximum and the minimum value to reduce the different torque harmonics.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: January 7, 2020
    Assignee: JIANGSU UNIVERSITY
    Inventors: Guohai Liu, Xinxin Du, Wenxiang Zhao, Qian Chen, Deshui Hu