With Nonmotor Parameter Or Remote Condition Detected (e.g., Temperature, Light, Airflow, Position Of Diverse Object, Etc.) Patents (Class 318/400.08)
  • Patent number: 11101753
    Abstract: A method for controlling a motor includes obtaining addressing information of an electronic speed governor coupled to the motor, determining a rotation direction of the motor based on the addressing information, and providing a drive signal to the motor according to the rotation direction.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: August 24, 2021
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Changxing Zhou, Wanqi Liu, Qiu Lan
  • Patent number: 10942229
    Abstract: A method for correcting the output of a Hall effect device for thermal electromotive force (thermo-EMF) utilizing the steps of: (1) supplying energy to the Hall effect device, (2) measuring a first output of the Hall effect device as a result of the supplying energy, (3) stopping the supply of energy to the Hall effect device, (4) waiting a period of time, (5) measuring a second output of the Hall device in response to a temperature difference between the output measurement location and a reference point, and (6) combining the first and second outputs to determine an output corrected for thermo-EMF.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 9, 2021
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 10791648
    Abstract: A pump includes an armature, a rotor assembly, a liquid path connector and a member. The armature includes a ferromagnetic core, a winding and a through passageway. The rotor assembly is disposed in the passageway and includes an impeller to rotate to pump liquid through the passageway. The liquid path connector is connected to the armature to communicate the liquid with the passageway. The member contacts an outer surface of the armature and contacts an outer surface of the liquid path connector to transfer thermal energy from the armature to the liquid path connector.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: September 29, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: John Franz, Tahir Cader
  • Patent number: 10738790
    Abstract: A motor-driven fan device includes a motor, a processor, a storage with a lookup table stored therein, and a speed detection unit. The processor queries the lookup table or calculates to acquire the target driving voltage and a corresponding target rotating speed of the motor. When the rotating speed difference is not within the range of the preset rotating speed difference, the processor repeatedly adds a gain value to the target driving voltage to acquire a new target driving voltage, acquires the actual rotating speed and the target rotating speed, and determines whether the rotating speed difference is within the range of the preset rotating speed difference. The processor maintains the operation of the motor at the target rotating speed at that point by using the constant speed control method when the absolute value of rotating speed difference is within the range of the preset rotating speed difference.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: August 11, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Chiping Sun, Shinghin Yeung, Haibo Jiang, Yunlong Jiang, Guodong Liu, Zhiwang Chen
  • Patent number: 10742094
    Abstract: Provided are methods for monitoring temperatures of permanent magnets disposed on rotors of permanent magnet motors. Also provided are vehicle drivetrains including permanent magnet motors and controllers operable to monitor temperatures of permanent magnets used in these motors. A magnet temperature is determined based on the rotational speed of the motor and also based on the open circuit voltage of the motor at this rotational speed. The motor may be specifically calibrated to determine its response to magnet temperature changes for any rotational speed. During operation, an inverter connected to the motor and controlling motor's operation may pause its switching for a period of time and check the open circuit voltage of the motor during this period. The corresponding rotor speed may be obtained from other sensors. The controller uses this information to determine the magnet temperature and, in some embodiments, to perform various control operations to avoid overheating.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: August 11, 2020
    Assignee: Wrightspeed, Inc.
    Inventor: Ian Wright
  • Patent number: 10690130
    Abstract: An air compressor includes a tank unit, a compressed air generating unit, a motor unit, a driving current generating unit, a control unit and a temperature detecting unit. The tank unit stores a compressed air. The compressed air generating unit generates the compressed air to be stored in the tank unit. The motor unit drives the compressed air generating unit. The driving current generating unit generates a driving current of the motor unit. The control unit drives the motor unit by controlling the driving current generating unit. The temperature detecting unit detects a temperature of the driving current generating unit. The control unit changes the driving current of the motor unit by controlling the driving current generating unit based on the temperature detected by the temperature detecting unit.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: June 23, 2020
    Assignee: MAX CO., LTD.
    Inventors: Katsuki Takeuchi, Shinichi Ohkubo
  • Patent number: 10660626
    Abstract: A surgical system includes an intelligent surgical device having a drive motor supported in the housing and being in electrical communication with the power source; and control circuitry. The control circuitry includes a feedback system for monitoring a condition of the surgical device during a use thereof and for changing an operative parameter of the surgical device when a change in the monitored condition occurs. The surgical system includes a non-intelligent loading unit for selective connection to the housing of the surgical device and which is actuatable by the drive motor. During operation, the drive motor actuates the loading unit from a first condition to a second condition; and when the loading unit achieves the second condition, a change in the at least one monitored condition occurs and an operative parameter of the surgical device is changed.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: May 26, 2020
    Assignee: COVIDIEN LP
    Inventors: David Nicholas, Donald Malinouskas, David Zeichner
  • Patent number: 10641263
    Abstract: A method for operating a linear compressor includes substituting a first observed velocity, a bounded integral of the first observed velocity, an estimated clearance, an estimated discharge pressure, and an estimated suction pressure into the mechanical dynamic model for the motor, calculating an observed acceleration for the piston with the mechanical dynamic model for the motor, calculating a second observed velocity for the piston by integrating the observed acceleration for the piston, calculating an observed position of the piston by integrating the second observed velocity for the piston, and updating an estimated clearance, an estimated discharge pressure, and an estimated suction pressure based upon an error between the first and second observed velocities and an error between the bounded integral of the first observed velocity and the observed position.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: May 5, 2020
    Assignees: Haier US Appliance Solutions, Inc., University of Louisville Research Foundation, Inc.
    Inventors: Srujan Kusumba, Gregory William Hahn, Michael Lee McIntyre, Joseph W. Latham
  • Patent number: 10615736
    Abstract: The present disclosure relates to an electronic circuit for detecting the current winding temperature of phase windings and/or other characteristics of an electronically commutated electric motor, which is connected, or can be connected, to a frequency converter, comprising one or more capacitive two-terminal networks with a temperature-dependent impedance, each network being arranged parallel to two winding terminals (u, v, w) of the phase windings, as well as a detector for detecting the current responses in the motor feeds on the basis of steep-flanked voltage changes at the output of the frequency converter.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: April 7, 2020
    Assignee: ebm-papst Mulfingen GmbH & Co. KG
    Inventors: Fabian Schneider, Sebastian Schroth, Marco Weckert, Ralph Wystup
  • Patent number: 10539927
    Abstract: A timepiece includes a voltage detection unit that detects a voltage applied to a stepping motor for driving an indicating hand, and that outputs a voltage detection result, and a drive control unit that controls a rotor to perform reverse rotation by using a reverse rotation pulse including a first pulse whose polarity is the same as that of a normal rotation pulse for causing the rotor of the stepping motor to perform normal rotation, a second pulse whose polarity is reverse to that of the first pulse, and a third pulse whose polarity is reverse to that of the second pulse, and to control the rotor to perform the reverse rotation by using the third pulse having a pulse width set in accordance with the voltage detection result.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: January 21, 2020
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Akihito Okumura, Ryosuke Isogai, Kosuke Yamamoto
  • Patent number: 10498187
    Abstract: Provided is a brushless direct current (BLDC) motor applied to a fuel pump for a motor vehicle, and more particularly, a BLDC motor of a fuel pump for a motor vehicle in which an end of a shaft of a rotor is coupled to a stator side to be rotated such that a length of the shaft is reduced.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: December 3, 2019
    Assignee: COAVIS
    Inventors: Wan Sung Pae, Hyun Tae Lee, Jin Woo Han
  • Patent number: 10371407
    Abstract: An air conditioning apparatus is equipped with an indoor fan, an indoor heat exchanger, and a control unit. The indoor heat exchanger generates conditioned air by exchanging heat between refrigerant and room air. The control unit sets operating modes. The control unit controls the rotational speed of the indoor fan. More specifically, in a case where the operating mode has been switched from one to the other of a normal heating mode and a hot air mode in which the conditioned air higher in temperature than in the normal heating mode is generated, the control unit lowers the rotational speed at a second rate that is slower than a first rate which is a rate of decrease in the rotational speed in a case where the operating mode is set to the normal heating mode.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: August 6, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro Nakata, Junya Yoneda
  • Patent number: 10362914
    Abstract: Disclosed herein are a cleaner and a control method thereof. The control method of the cleaner includes: supplying predetermined rearrangement power to a motor for a predetermined time period; detecting a position of a rotor using a hall sensor; and supplying start-up power according to the detected position of the rotor.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: July 30, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam Su Kim, Wook Jin Lee, Bu Mun Jung, Young Kwan Kim
  • Patent number: 10333452
    Abstract: The present disclosure provides a control apparatus for sensing overcurrent of a DC motor of a vehicle. The control apparatus may include: a microcomputer configured to convert a pulse width modulation (PWM) signal into a digital signal for controlling the DC motor; a half-bridge driver configured to control switching of the DC motor; a regulator configured to supply power; and a noise removal filter. The microcomputer is configured to measure a voltage at an input of the half-bridge driver, compare a difference between on-voltage and off-voltage during each of PWM period with a predetermined threshold, and stop the DC motor when the difference exceeds the predetermined threshold a predetermined number of times.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: June 25, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sun Woo Kim, Sae Rom Kim, Sang Hyun Jang
  • Patent number: 10310475
    Abstract: A system and method of operating an HVAC system, the HVAC system including a HVAC unit including a variable speed HVAC component in communication with a unit controller, an interface device in communication with the unit controller, and a single-speed system controller in communication with the interface device, the method including operating the interface device to receive a first conditioning signal from the system controller, operating the interface device to determine a temperature differential when the first conditioning signal is received, operating the interface device to transmit the temperature differential to the unit controller, operating the unit controller to transmit a speed signal based on the temperature differential, operating the interface device to receive a second conditioning signal, and operating the interface device to update the at least one set point estimate when second conditioning signal is received.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: June 4, 2019
    Assignee: CARRIER CORPORATION
    Inventor: Nick Conklin
  • Patent number: 10291233
    Abstract: A pulse output device which corrects a pulse signal advanced or delayed from a timing prescribed by a control device and a control system including the pulse output device are provided. A PLC system including a driving device, a CPU unit, and a pulse output unit is provided. The pulse output unit includes a clock generation unit that generates a clock signal, a pulse output unit that generates a pulse signal by dividing a frequency of a clock signal and outputs the pulse signal having the number of pulses and a pulse speed commanded by the CPU unit at a prescribed timing, a pulse counter that counts the number of pulses of the output pulse signal, and a processing unit that corrects the pulse speed of the pulse signal generated by the pulse output unit based on an error in the numbers of pulses.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: May 14, 2019
    Assignee: OMRON Corporation
    Inventor: Yoshimi Niwa
  • Patent number: 10103668
    Abstract: A system and method of avoiding hunting behavior by a motor around disallowed speed ranges. A sensor or sensorless method determines the motor's actual speed. A memory contains lower and upper speed values that define a disallowed range. A control unit determines whether the motor is operating under a limiting condition and engaged in hunting behavior by determining whether the motor is repeatedly moving between an actual speed that is within the disallowed range and an actual speed that is at or below the lower speed value during a first period, and if so, sets a temporary speed limit for the motor at the lower speed value for a second period. The first period may be the time required for the motor to change its actual speed a few times and thereby confirm hunting behavior. The second period may be sufficiently long that the limiting condition may have changed.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: October 16, 2018
    Assignee: Nidec Motor Corporation
    Inventor: Prakash B. Shahi
  • Patent number: 9985562
    Abstract: A synchronous generator may comprise a rotor and a stator. The stator may comprise a first armature winding configured to output a first three-phase voltage, a second armature winding configured to output a second three-phase voltage, and a first variable inductor, wherein the first variable inductor is tunable in response to a rotational frequency of the rotor.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: May 29, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Gregory I. Rozman, Jacek F. Gieras, Steven J. Moss
  • Patent number: 9973131
    Abstract: The present disclosure relates to a motor driving device and a laundry treatment apparatus. The motor driving device may include an inverter to convert DC power into AC power according to a switching operation and to output the converted AC power to a motor, an output current detector to detect an output current flowing through the motor, and a controller to control the inverter based on the detected output current. The controller changes a carrier frequency, changes a voltage command based on the changed carrier frequency and outputs an inverter switching control signal to the inverter based on the changed carrier frequency and the changed voltage command. Accordingly, noise may be reduced during operation of the motor.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: May 15, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Junho Lee, Chungill Lee, Jungmoon Je
  • Patent number: 9899949
    Abstract: A system-specific interface module for a motor control subassembly for controlling operation of an electric motor within a larger system which uses a particular system communication method. The motor control subassembly includes a standard power module and the interface module. The power module includes a controller processor configured to receive input for controlling and to generate output regarding operation of the motor. The interface module includes a communication interface hardware block configured to exchange input and output signals with the larger system, and an interface processor configured to translate the input and output signals between the particular system communication method used by the larger system and a standard internal communication method used by the power module. Thus, the motor control subassembly can be configured to accommodate any of a variety of different system communication methods and other input/output options by selecting and inserting the appropriate interface module.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: February 20, 2018
    Assignee: Nidec Motor Corporation
    Inventors: Prakash B. Shahi, Anandan C. Velayutham, Douglas D. Glenn, Christopher D. Schock, James L. Skinner, Randy L. Bomkamp, Mark E. Carrier
  • Patent number: 9647591
    Abstract: Techniques for motor magnet degradation controls and diagnostics are disclosed. An exemplary technique determines q-axis current, d-axis current, q-axis voltage, and/or d-axis voltage of a permanent magnet motor based upon sensed current and voltage information of the motor. This information is utilized to determine flux information. The flux information is utilized in evaluating collective state conditions of a plurality of motor magnets and evaluating localized state conditions of a subset of the plurality of motor magnets. The evaluations can be used to identify degradation or damage to one or more of the magnets which may occur as a result of elevated temperature conditions, physical degradation, or chemical degradation.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: May 9, 2017
    Assignee: Trane International Inc.
    Inventors: Nathan Thomas West, David Marshall Foye
  • Patent number: 9622744
    Abstract: Electrical surgical device comprising a handle shaped to be held within one hand, the handle having a self-contained power source, at least part of an end effector control assembly connected to the power source, a switch connected to the power source and operable to selectively power the end effector control assembly with the power source, and an articulation control device, wherein both the switch and the articulation control device are operated with the one hand holding the handle; an articulating connection operated by the articulation control device; and a surgical end effector connected to the handle by the articulating connection such that articulation of the surgical end effector is controlled by operation of the articulation control device and operatively connected to the end effector control assembly such that, upon operation of the end effector control assembly, the surgical end effector is operable to carry out at least one surgical procedure.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: April 18, 2017
    Assignee: Ethicon Endo-Surgery, LLC
    Inventors: Kevin W. Smith, Thomas O. Bales, Jr., Derek Dee Deville, Carlos Rivera, Matthew A. Palmer
  • Patent number: 9628017
    Abstract: In order to highly accurately estimate a temperature of a permanent magnet to be used for a rotor of a motor, provided is a motor control device for a vehicle including a motor as a drive power source, in which an estimation mode setting section sets, when a predetermined condition for estimating the temperature of the permanent magnet to be used for the rotor of the motor is established under a state in which the motor generates drive power to run the vehicle, a current flowing through the motor to 0, and a permanent magnet temperature estimation section estimates the temperature of the permanent magnet based on an induced voltage of the motor in a period during which the current flowing through the motor is 0.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: April 18, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasufumi Ogawa, Keiichi Enoki, Nobuhide Mori, Hiroyuki Kobayashi
  • Patent number: 9526585
    Abstract: Medical or dental instruments, preferably handpieces, can have different temperature-measuring devices for measuring the temperature in the instrument or of at least a part of the instrument. The temperature-measuring devices can be designed, for example, to measure the temperature contactlessly by detection of electromagnetic radiation or to measure the temperature of an interior of the instrument that can be heated by a heat source. The temperature-measuring devices may be designed, for example, as electrical temperature measuring devices or may have a magnetic material whose magnetic property is a function of temperature and/or has a temperature-dependent course. The temperature-measuring device may have, for example, an electrical switching device and a signal device wherein the signal device is switched at least between a first signal condition and a second signal condition when a temperature limit value is reached or exceeded or is underrun.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: December 27, 2016
    Assignee: W&H Dentalwerk Bürmoos GmbH
    Inventors: Christian Pruckner, Karlheinz Eder, Johann Grosslhuber
  • Patent number: 9515584
    Abstract: A converter for an electric motor includes a semiconductor element connected at at least one contacting for converting a voltage, a voltage measuring device for measuring a voltage drop over the semiconductor component, and a control device for controlling the semiconductor component, the control device being configured to determine a state of the contacting based on the measured voltage drop.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: December 6, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Oliver Dieter Koller, Martin Richter, Harald Schueler
  • Patent number: 9479108
    Abstract: A controller for an electric compressor sets a temperature rise region A, a temperature drop region B, and a steady region C from change in temperature of switching elements, and sets a carrier frequency for each of the set regions. In the region A, the carrier frequency is changed according to the element temperature so that the carrier frequency decreases with increase of the element temperature at startup of a motor. In the region B and the region C, the carrier frequency is changed according to the number of revolutions of a compression mechanism, so that the carrier frequency decreases with increase of the number of revolutions of the compression mechanism, regardless of the element temperature.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: October 25, 2016
    Assignee: DENSO CORPORATION
    Inventor: Koji Sakai
  • Patent number: 9473060
    Abstract: A system and method of avoiding hunting behavior by a motor around disallowed speed ranges. A sensor or sensorless method determines the motor's actual speed. A memory contains lower and upper speed values that define a disallowed range. A control unit determines whether the motor is operating under a limiting condition and engaged in hunting behavior by determining whether the motor is repeatedly moving between an actual speed that is within the disallowed range and an actual speed that is at or below the lower speed value during a first period, and if so, sets a temporary speed limit for the motor at the lower speed value for a second period. The first period may be the time required for the motor to change its actual speed a few times and thereby confirm hunting behavior. The second period may be sufficiently long that the limiting condition may have changed.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: October 18, 2016
    Assignee: Nidec Motor Corporation
    Inventor: Prakash B. Shahi
  • Patent number: 9448519
    Abstract: A motor control device includes a motor device, a speed command section, and a load detecting section. The motor control device includes: a motor configured to drive a rotating body and output a speed notification signal having an oscillation frequency corresponding to a rotational speed of the rotating body; and a driver IC configured to control a rotational speed of the motor. The speed command section is provided outside the motor device and configured to output a speed command signal designating a rotational speed of the motor to the driver IC. The load detecting section is provided outside the motor device and configured to derive a phase difference between the speed command signal and the speed notification signal and detect a load on the motor based on the phase difference.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: September 20, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Naohiro Anan
  • Patent number: 9350284
    Abstract: In a system for driving an electric motor by an engine generator, there is a possibility that oscillation and d-axis current are increased. In an engine generator system, a power converter (105) controls a generator (104) so that the phase of an oscillating component included in the d-axis current in the rotor magnetic flux direction of the generator (104) advances by 90 degrees or more with respect to the phase of an oscillating component of the identical frequency included in the rotating electric angular frequency of the generator (104), and further using q-axis voltage adjusting device (118) so that the phase of an oscillating component included in the q-axis current advances by 90 degrees or more with respect to the phase of an oscillating component of the identical frequency included in the rotating electric angular frequency of the generator (104).
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: May 24, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Toshifumi Sakai, Koichiro Nagata, Yoshitaka Iwaji, Motomi Shimada
  • Patent number: 9337757
    Abstract: The outputs from a first magnetic detector and a second magnetic detector are supplied to first to fourth output circuits which are differential amplifiers, whereby first and second detected outputs which are analogous to a sine wave and whose positive-negative polarities are opposite to each other, and third and fourth detected outputs which are analogous to a cosine wave and whose positive-negative polarities are opposite to each other are obtained. The first to fourth detected outputs are supplied to a switching circuit, and detected output portions are obtained at intervals of 90° from the first to fourth detected outputs. A bias adding circuit applies a bias voltage to each of the detected output portions to obtain an angle detection output analogous to a linear function. The angle detection output is used to determine the supply timing at which a three-phase driving current is supplied.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: May 10, 2016
    Assignee: ALPS ELECTRIC CO., LTD.
    Inventor: Tokuo Nakamura
  • Patent number: 9233809
    Abstract: To simplify control of a sheet feeding/conveying system while preventing a step-out phenomenon and saving power, provided is an image forming apparatus which detects a load angle of a first motor (M1) for conveying an n-th sheet (P) (where n is a natural number equal to or larger than 1). In accordance with the detected load angle, a current value for the first motor (M1) for conveying sheets (P) following the n-th sheet and a current value for a second motor (M2) for conveying the n-th and subsequent sheets (P) are set. Such control is executed when power is turned ON or the like.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: January 12, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryuta Mine, Hirohisa Kato, Takeyuki Suda, Mitsuhiro Sugeta
  • Patent number: 9103347
    Abstract: A fan device includes an impeller, a motor, a fan frame, a circuit board and a covering member. The motor is used for driving rotation of the impeller. The fan frame includes an axial-flow channel for accommodating the impeller and the motor and includes a receptacle. The receptacle is defined by two airflow inlet/outlet plates, one channel wall and two lateral plates. The circuit board is accommodated within the receptacle. The covering member is used for sheltering the receptacle.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: August 11, 2015
    Assignee: DELTA ELECTRONICS, INC.
    Inventor: Po-Hao Yu
  • Patent number: 9086300
    Abstract: An electric motor having a rotor and a stator as well as a measuring device designed for detecting a position of the rotor, which is movable relative to the stator, and comprising a sensor system for the provision of sensor signals in dependence on the position of the rotor relative to the stator and a processing device for controlling the sensor system, for processing the sensor signals and for outputting a position signal. The processing device is configured for switching between a first operating state with a continuous or high-frequency intermittent provision of supply energy to the sensor system and a second operating state with a low-frequency intermittent provision of supply energy to the sensor system.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: July 21, 2015
    Assignee: FESTO AG & CO. KG
    Inventors: Christin Clauss, Stefan Scheller, Hans-Jorg Hemminger, Michael Apel
  • Patent number: 8981687
    Abstract: A motor control apparatus includes an A/D converter, which is a hardware part for converting an analog signal of a sensor to a digital signal, a microcomputer, which is a software part, and a drive circuit, which is a hardware part for driving an inverter to supply electric power to a motor. The microcomputer includes calculation blocks, each of which is a calculation block for individually calculating an output from an input. The microcomputer further executes, in parallel to control calculations, software monitor processing for each calculation block to monitor whether the control calculation is executed normally. The motor control apparatus thus can detect a software abnormality without using a monitoring hardware circuit separately.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: March 17, 2015
    Assignee: Denso Corporation
    Inventor: Yoshihide Kuroda
  • Patent number: 8920132
    Abstract: A blower system includes a blower motor and an inverter in electrical communication therewith. The blower motor is mechanically coupled to a blower configured to generate an airstream having an airflow rate. The inverter is configured to provide a motor drive signal to the motor. A flow rate calculator is configured to determine a calculated airflow rate from motor operating parameters of the blower motor using a mathematical model of the airflow rate.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: December 30, 2014
    Assignee: Lennox Industries Inc.
    Inventor: Harold Gene Havard, Jr.
  • Patent number: 8922152
    Abstract: A temperature protection device basically includes a temperature detector, a temperature estimator, an overheated determining component and an overheating protection component. The temperature detector detects a temperature of a semiconductor component. The temperature estimator estimates an estimated temperature of the semiconductor component. The overheated determining component determines whether the semiconductor component is in an overheated state based on the detected temperature and the estimated temperature by using a first estimated temperature as the estimated temperature at a time point when the detected temperature has reached a first threshold temperature and a second estimated temperature that is estimated subsequent to the time point as the estimated temperature when the detected temperature has reached the first threshold temperature.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: December 30, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Hiromichi Kawamura
  • Patent number: 8884568
    Abstract: A driving circuit for driving a fan with a plurality of operational modes includes an initiation module for generating a switch signal according to a feedback signal, a control module coupled to the initiation module for utilizing a pulse frequency modulation technique to generate a control signal according to the switch signal and a predetermined comparison signal, so as to drive the fan for a rotational operation, and a feedback module coupled to the fan for generating the feedback signal according to a conduction result of the fan. The rotational operation includes the plurality of operational modes, and the fan is switched between the plurality of operational modes according to different conduction results of the fan.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: November 11, 2014
    Assignee: Anpec Electronics Corporation
    Inventors: Ching-Feng Lai, Hung-Chun Yeh, Kang Sheng
  • Patent number: 8866428
    Abstract: A method for determining a temperature of an electric motor including stator windings includes injecting an AC current into a D-axis current of a stator winding at a frequency that is synchronized with a control frequency of the electric motor, determining a DC-phase current, determining a resistance of the stator winding corresponding to the DC-phase current and an applied voltage, and determining a temperature of the electric motor as a function of the resistance of the stator winding.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: October 21, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Lei Hao, Yilu Zhang, Siwei Cheng
  • Patent number: 8841871
    Abstract: The present application discloses a control circuit for a power tool and a method for manipulating the power tool. The control circuit has a detection circuit for battery packs, a calculating control circuit, a battery capacity indicating circuit for indicating the calculation result of the battery capacity, and a current measure and calculating circuit for measuring the current flowing through motors. The calculation result further includes the voltages consumed by the battery pack internally and the discharge loop. The method for manipulating the power tool includes pressing the switch to electrically connect the motor and the battery pack, measuring the parameters of the battery pack and allowing the motor to operate or not according the measured parameters. Further, after the motor is in operation, the battery capacity is calculated and the results are displayed.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: September 23, 2014
    Assignee: Chervon (HK) Limited
    Inventors: Dezhong Yang, Zheng Geng
  • Patent number: 8786227
    Abstract: An electric compressor controller includes a compressor that compresses refrigerant of an air conditioning system; a motor that drives the compressor; an inverter that selectively control switching elements based on PWM pulse signals to supply drive power to the motor and heats the refrigerant by heat generated due to switching of the switching elements during a heating operation; temperature detectors each detects junction temperature of each of the switching elements; a drive controller that supplies the pulse signals to the inverter to control the inverter; and a slope varying unit that variably controls precipitous degree of rising/falling slope waveforms of the pulse signals based on the junction temperature detected by the temperature detectors. According to the electric compressor controller, efficiency for heating refrigerant is improved, so that its own heating ability is improved.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: July 22, 2014
    Assignee: Calsonic Kansei Corporation
    Inventor: Takashi Kubo
  • Patent number: 8766562
    Abstract: An adjustment device for adjusting a relative rotational angle position of two shafts (particularly a cam shaft and a crank shaft of an internal combustion engine) that has an adjusting gear which is designed as triple shaft gear and has a drive part connected to a first shaft (crank shaft), a driven part connected to a second shaft (cam shaft), and an adjustment shaft connected to a servomotor shaft of an electric servomotor in a rotationally fixed manner. In order to implement a wide temperature range for the operation of the adjustment device, a temperature sensor is arranged in the servomotor. In a method for operating an adjustment device or an actuator, the current of the servomotor or the actuator is controlled depending on the temperature that was determined earlier.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: July 1, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jens Schaefer, Martin Steigerwald
  • Patent number: 8749180
    Abstract: The present invention is aimed to realize a method and a system for controlling an electric cylinder by which the load detector that is attached to an electric cylinder and the rod of the cylinder can avoid being overloaded. An unexpected bump between the rod of the cylinder and the material to be pressed can cause that overload. A servo controller 17 determines whether the load for pressurizing Pm detected by the load detector 13 is larger than or equal to the load for detecting a bump Pc. If it is determined that the load for pressurizing Pm is larger than or equal to the load for detecting a bump Pc, the servo controller 17 determines whether the flag for stopping is ON. Also, the controller 17 determines whether the speed Sm of the rod 11 is greater than or equal to an allowable speed to bump Sc.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: June 10, 2014
    Assignee: Sintokogio, Ltd.
    Inventors: Masahiko Nagasaka, Yoichiro Shirai
  • Patent number: 8736209
    Abstract: A drive and control circuit for motor system and the method thereof are disclosed. The motor system could be applied in a cooling device, wherein the motor system comprises a rotor, a coil and a bridge circuit. The drive and control circuit comprises a control unit, a state detecting circuit, a load determining circuit, and a startup setting circuit. The startup setting circuit makes the motor run with the maximum torque, thus to make the motor system start up easily and quickly. The load determining circuit detects the load of the motor system, thus to generate a load determining signal to determine the speed of the motor system. The control unit could be realized with few components so as to save the costs.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: May 27, 2014
    Assignee: Chengdu Monolithic Power Systems, Co., Ltd.
    Inventors: Jian Zhao, Yike Li, Yangwei Yu
  • Patent number: 8674637
    Abstract: A vehicle includes a power storage device, a motor generator, a converter for stepping up an output voltage from the power storage device, an inverter for driving the motor generator, and an ECU. The inverter includes switching elements. The switching elements have a characteristic that the withstand voltage of the switching elements decreases as the temperature of the inverter decreases. The ECU sets the stepped-up voltage, based on a temperature characteristic of the power storage device and a temperature characteristic of the inverter, so that the stepped-up voltage is increased within a range in which the stepped-up voltage does not exceed the withstand voltage. In this way, at low temperatures, deterioration of the power performance can be suppressed while the switching elements are protected.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: March 18, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yusuke Kamijo
  • Patent number: 8674651
    Abstract: There is provided an electronic device that includes a heatsink and a set of IGBTs coupled to the heatsink and configured to deliver power to a field exciter and a battery. The electronic device also includes a temperature sensor disposed in the heatsink and a controller. The controller is configured to receive a temperature reading from the temperature sensor and, based on the temperature reading, determine a junction temperature for at least one of the IGBTs of the set of IGBTs. The controller is also configured to de-rate an output power provided by each of the IGBTs based, at least in part, on the junction temperature.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: March 18, 2014
    Assignee: General Electric Company
    Inventor: Dimitrios Ioannidis
  • Patent number: 8653769
    Abstract: A method of calculating a control parameter for a component in an HVAC system includes receiving a plurality of input signals, and calculating a value of the control parameter using a control parameter equation having a plurality of predetermined coefficients and a plurality of variables, each variable corresponding to one of the input signals. This equation is stored in and subsequently fetched from memory associated with a component of the HVAC system, such as a blower motor controller or a system controller. In some embodiments, the equation is stored in a device for interfacing a system controller with a blower motor assembly.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: February 18, 2014
    Assignee: Nidec Motor Corporation
    Inventor: Charles E. B. Green
  • Patent number: 8587245
    Abstract: A motor, including: a stator, a rotor, and a motor controller. The motor controller is connected to a network interface circuit (NIC). The motor can be directly connected to a network, which makes it possible for technicians to facilitate remote control, debugging, remote diagnosis, and troubleshooting. The motor is easy to be identified, and features improved functions, wider application range, and more convenient use.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: November 19, 2013
    Assignee: Zhongshan Broad-Ocean Motor Manufacturing Co., Ltd.
    Inventor: Yong Zhao
  • Publication number: 20130293166
    Abstract: A heating, ventilation and air conditioning (HVAC) system is provided. The system includes an integrated motor including a plurality of operating speeds and an input for selecting one of the plurality of operating speeds. The system further includes a system controller and an adjustment module. The adjustment module includes a plurality of operating modes each associated with one of the plurality of operating speeds and the ability to manually vary associations between the plurality of operating modes and the plurality of operating speeds. The adjustment module selects one of the plurality of operating modes on the basis of control commands received from the system controller and setting programmed or manually entered into and stored in the adjustment module and controls the integrated motor according to the operating speed associated with the selected operating mode.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 7, 2013
    Applicant: DYNAMOTORS, INC.
    Inventors: William F. Merkel, William M. Jones, Robert G. Klimo
  • Patent number: 8552668
    Abstract: An automotive electrical body system includes a plurality of electrical assemblies coupled to at least one automotive body component. Each of the assemblies includes a heating element for heating the at least one component, a motor for actuating the at least one component, or a switch configured to toggle the at least one component on and off. Each of the assemblies also includes a wireless communication module for receiving wireless signals, and, in response to the wireless signals, controlling operation of the heating element or motor. An electrical conductor interconnects each of the electrical assemblies and carries electrical power to each of the electrical assemblies.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: October 8, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Alfons Hogenmueller, Vivek Jain
  • Patent number: 8513911
    Abstract: A power converter that interfaces a motor requiring variable voltage/frequency to a supply network providing a nominally fixed voltage/frequency includes a first rectifier/inverter connected to a stator and a second rectifier/inverter. Both rectifier/inverters are interconnected by a dc link and include switching devices. A filter is connected between the second rectifier/inverter and the network. A first controller for the first rectifier/inverter uses a dc link voltage demand signal indicative of a desired dc link voltage to control the switching devices of the first rectifier/inverter. A second controller for the second rectifier/inverter uses a power demand signal indicative of the level of power to be transferred to the dc link from the network through the second rectifier/inverter, and a voltage demand signal indicative of the voltage to be achieved at network terminals of the filter to control the switching devices of the second rectifier/inverter.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: August 20, 2013
    Assignee: Converteam Technology Ltd.
    Inventors: Rodney Jones, Christopher Newton