With Running-speed Control Patents (Class 318/257)
  • Patent number: 10955863
    Abstract: The disclosure relates to a circuit apparatus for controlling a switchable glazing unit. The circuit apparatus has a potential-isolated circuit part configured to generate a periodically alternating drive voltage which has a predetermined first period duration on the glazing unit. The disclosure provides a voltage source, to which the potential-isolated circuit part is connected via a transformer and which is configured to operate the transformer with an AC voltage which has a second period duration shorter than the first period duration, wherein the potential-isolated circuit part is configured to receive the transformed AC voltage from the transformer and, in repeatedly alternating switching phases, to respectively forward only positive half-cycles of the transformed AC voltage to an electrical capacitance of the glazing unit and to forward only negative half-cycles of the transformed AC voltage to an electrical capacitance of the glazing unit by means of a converter device.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: March 23, 2021
    Assignee: Continental Automotive GmbH
    Inventors: Aurel-Vasile Neic, Wolfgang Koellner
  • Patent number: 10926670
    Abstract: A vehicle and a method controlling the same are provided to detect a seat jamming or a short-circuit of a seat control system. The vehicle includes a motor that rotates forward or backward to fold a seatback of a seat toward a seat cushion or unfold the seatback from the seat cushion. A current sensor sense an output current of the motor and a controller determine a seat jamming or a short-circuit of an output of the motor based on a magnitude of the output current sensed for a predetermined period of time during forward or backward rotation of the motor.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: February 23, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Das Co., Ltd.
    Inventors: Sang-Soo Lee, Hyeong Jun Kim, Incheol Bae, Deok Soo Lim, Younggwan Kwon, Hosuk Jung, Sanghyun Lee, YoungBok Sung, Sang Ho Kim, Tae Jun Kwon, Yohan Kim, Doori Kim, Duck Yeol Kim, Jae Hyun Kim, Sang Young Park
  • Patent number: 10797625
    Abstract: A device and method for detecting the number of revolutions of a sensorless electric park brake (EPB) motor. The device for detecting the number of revolutions of a sensorless motor includes: an actuator driving motor used to set and release a parking brake of an EPB system; an electronic control module for controlling the motor, a vehicle battery for supplying power to the motor and the electronic control module; and a main processing unit for receiving an output signal of the electronic control module and estimating the number of revolutions of the motor, wherein the electronic control module further includes a ripple measuring unit for receiving an output signal of the motor and measuring a ripple of the motor.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: October 6, 2020
    Assignee: ERAE AMS CO., LTD.
    Inventors: Dae Ki Ahn, Seung Soo Noh, Shin Deok Kang, Eung Soo Kim, Soo Hwan Song
  • Patent number: 10644753
    Abstract: A method for producing, especially configuring, a system is provided, including a contact wire and an apparatus, and device for carrying out the method. The apparatus is able to be supplied with energy with the aid of the contact wire, and information is transmittable from and/or receivable by the apparatus via the contact wire. The contact wire has at least a first, second, fourth and fifth contact conductor that are connected to one respective connector element of the apparatus. The first and second contact conductors have one respective phase of the AC voltage supplying the apparatus. The fourth contact conductor is provided for transmitting information and the fifth contact conductor is provided for receiving information. One of the phases, thus especially the phase acting as signaling phase, is connected electrically to a first connector element, in particular, the first connector element is provided with a corresponding marking or identification when producing the apparatus.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: May 5, 2020
    Inventors: Heiko Schulz, Ronny Enenkel, Martin Bund, Claus Schöpfer
  • Patent number: 10643775
    Abstract: A magnetic core and an electric coil, wherein the magnetic core is configured to move by supplying current to the electric coil to allow electrical energy to be transformed into mechanical energy and an electromagnetic actuator operates a valve body to move, and a controller configured to measure a current flowing through the electric coil, select a temporal evaluation section of a course of the current, wherein the current changes from a current value at a beginning of the temporal section to a current value at an end of the section, wherein the evaluation section lasts for a duration period, form an evaluation product from at least the current value at the beginning of the section, the current value at the end of the section, and the duration period of the section, and detect an error function of the actuator by comparing the evaluation product with an evaluation product limit.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: May 5, 2020
    Inventors: Weigang Wang, Piergiacomo Traversa, Michael Elicker
  • Patent number: 10583499
    Abstract: A control method for the use of a core drilling system including a core drill and a feed device for driving the core drill along a machine holding device. The method includes the steps of determining the end of a core drilling operation on the basis of reaching a predetermined threshold value for at least one corresponding predefined drilling parameter; and of selecting a reversing mode for retracting a drilling tool out of a borehole at a reversing rotational speed which corresponds to a multiple of a predetermined tapping rotational speed of the drilling tool at the beginning of the core drilling operation.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: March 10, 2020
    Assignee: Hilti Aktiengesellschaft
    Inventors: Tobias Drexl, Andreas Hartig, Thomas Schmalholz, Bernhard Link, Goran Golubovic
  • Patent number: 10519903
    Abstract: An air inlet system for an internal combustion engine comprising an air inlet duct which has an upstream end including an opening and a downstream end for connection to an air flow control component and further comprising a mass air flow sensor assembly, the mass air flow sensor being located closer to the downstream end than the upstream end.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: December 31, 2019
    Assignee: JC Bamford Excavators Limited
    Inventors: Peter Hutyan, Kevin Browne, Colin Loud, Ryan Ballard
  • Patent number: 10443559
    Abstract: An electronic ignition system for an internal combustion engine. The system includes an ignition coil provided with a primary winding and a secondary winding, a switch that is connected to the primary winding and that is drivable to an open and/or closed position according to a value of a driving signal. A control unit is configured to drive the switch to the open and/or closed position based on the driving signal. A voltage changing electronic element is operatively interposed between an electrical connection and the primary winding and is configured to change the voltage value of the primary winding between at least a first and a second voltage value. The control unit is configured to generate the control signal and send the control signal to having the first value to the changing electronic element at least during a first charging interval of the primary winding.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: October 15, 2019
    Assignee: Eldor Corporaton S.P.A.
    Inventors: Pasquale Forte, Stefano Silva, Eugenio Carugati
  • Patent number: 10271467
    Abstract: A method of performing active shielding of an electronic device from a magnetic field having a first flux, using a circuit; having the steps of: measuring, using a Hall effect sensor, a first magnitude and a first direction of the first flux; creating an output voltage equal to the first magnitude; feeding the output voltage to a differential amplifier; amplifying the output voltage to create an amplified output; comparing, using an error amplifier, the amplified output to a reference voltage to determine an error voltage; feeding the error voltage to an electric power switching circuit; generating a switching waveform based on the error voltage; feeding the switching waveform as an input to a driver module; creating, based on the input, a current having amplitude equaling the first magnitude and a second direction opposite of the first direction, such that a second flux is created to cancel the first flux.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: April 23, 2019
    Inventor: Prasad S. Joshi
  • Patent number: 10230319
    Abstract: This system changes the way internal Gasoline, Diesel, Turbine, and Combustion Engines (10) operating portable Alternators/Generators (30), or Stationary Power Stations (40) produce AC/DC, at any Hertz electrical input power to any Hertz Energy Conversion Unit/Variable Frequency Drive ECU/VFD (50). Where the output from the ECU/VFD to the Electric motor (80), using all the controlling systems, so the momentary power loss systems can go up to 100%, which is higher than normally used. From the ECU/VFD oversize capacitors (60) can go to 100% when used internally/externally or both. Starting at any Hertz, the voltage is decreased exactly 10.4165% less Hertz from the ECU/VFD, into the Motor (80), where it is then reduced 37.5%. The first reduction in any cycles is less allowing smaller internal combustion engines Alternators/Generators operating larger electric motors.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: March 12, 2019
    Inventor: Charles Frederick Stewart
  • Patent number: 10093523
    Abstract: Methods and systems are provided for adjusting operation of a motor of a winch. In one example, a system for a winch includes a controller adapted to adjust operation of a motor of the winch based on one or more of and/or each of a winch load limit, a motor temperature, a distance of a hook coupled to an end of a rope of the winch to a winch fairlead, and an amount of rope wound onto a drum of the winch.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: October 9, 2018
    Inventors: Bryan Averill, Darren Fretz, Kevin Talmadge, Ian Wendler
  • Patent number: 10050570
    Abstract: A motor control circuit is provided, including a first circuit, a second circuit, and a microcontroller. The first circuit is configured to conduct an analog tachometer output signal. The second circuit is configured to conduct an analog control input signal. The microcontroller is coupled to the first circuit and the second circuit, and is configured to transmit and receive serial data over a serial channel including the first circuit and the second circuit.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: August 14, 2018
    Assignees: Regal Beloit America, Inc., Regal Beloit Australia Pty Ltd, Changzhou Regal-Beloit Sinya Motor Co., Ltd.
    Inventors: Greg Heins, Lyell Douglas Embery, Hani Chahine, Bin Chen, Dingcheng Wang
  • Patent number: 10038398
    Abstract: The present invention realizes a motor control apparatus and the like capable of obtaining an appropriate frequency characteristic. The motor control apparatus of the present invention includes a command value generating portion (10), a torque saturation detecting portion (61) for determining whether a driving value based on a command value exceeds a driving value capable of being output from the apparatus, a current saturation detecting portion (71), a voltage saturation detecting portion (72), and a command value correcting portion (20) for correcting the command value when the driving value is determined as being exceeded.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: July 31, 2018
    Assignee: OMRON Corporation
    Inventors: Yasutomo Kawanishi, Mamoru Egi, Yasushi Ohno, Yasumoto Mori
  • Patent number: 9937360
    Abstract: Systems for generating a proton beam include an electromagnetic radiation beam (e.g., a laser) that is directed onto an ion-generating target by optics to form the proton beam. At least one processor is configured to control the source of the electromagnetic radiation and the optics to alter the energy, polarization, spatial profile, and/or the temporal profile of the electromagnetic radiation beam, and to adjust the flux and/or energy of the proton beam. In some instances the system may adjust the proton beam energy while holding the proton beam flux substantially constant, or alternatively adjust the proton beam flux while holding the proton beam energy substantially constant. In other instances the system may adjust the proton beam energy while varying the proton beam flux, and/or adjust the proton beam flux while varying the proton beam energy.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: April 10, 2018
    Assignee: HIL Applied Medical, Ltd.
    Inventors: Evgeny Papeer, Assaf Shaham, Shmuel Eisenmann, Yair Ferber, Ynon Hefets, Omer Shavit, Boaz Weinfeld, Sagi Brink-Danan
  • Patent number: 9935571
    Abstract: In one embodiment, a generator includes a rotor configured to rotate in cooperation with a stator to generate electrical power. A sensor, which is supported by the rotor, is configured to generate a trigger signal indicative of a position of the rotor. A communication interface is configured to receive the trigger signal from the sensor of the rotor and receive data indicative of an output of the generator. A controller supported by the rotor or configured to perform a phase analysis of the trigger signal and the output of the generator and calculate a power angle for the generator based on the phase analysis.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: April 3, 2018
    Assignee: Kohler, Co.
    Inventors: Isaac S. Frampton, Adam Larson, Richard Van Maaren
  • Patent number: 9785612
    Abstract: A method for determining a range of a vehicle, the vehicle having an electric motor to supply driving power and/or to recuperate braking energy, and a weight of the vehicle is determined on the basis of an acceleration and/or recuperation behavior as a function of a torque and/or a rotational speed of the electric motor, the range of the vehicle being determined on the basis of the ascertained vehicle weight.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: October 10, 2017
    Assignee: ROBERT BOSCH GmbH
    Inventors: Werner Poechmueller, Fanny Kobiela, Bettina Rentel, Michael Laedke, Guido Stuebner, Thorsten Mausbach, Andreas Engelsberg
  • Patent number: 9676462
    Abstract: A trolling motor system with power steering and associated methods are provided. The trolling motor system includes a power steering module mounted to a mount of the trolling motor system. The power steering module is operable to rotate a trolling motor assembly of the trolling motor system about an axis thereof based upon at least one of a mechanical or an electrical input.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: June 13, 2017
    Assignee: Johnson Outdoors Inc.
    Inventors: Darrel A. Bernloehr, David M. Samek, Justin Alders
  • Patent number: 9555537
    Abstract: A casing of a hedge clipper which is a portable tool is provided with a power source housing in which an electric motor is housed and a main handle held by a worker, and blades serving as a tip tool are provided to the casing. An operation display panel is provided on the main handle, and a driving information display unit which displays a battery remaining capacity and a rotation speed of an electric motor as a plurality of pieces of driving information is provided on the operation display panel. The selection of the information to be displayed is switched by the operation of an operation switch unit provided in the operation display panel.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: January 31, 2017
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Kazutaka Iwata, Yasutaka Shimizu, Shogo Shibata
  • Patent number: 9515484
    Abstract: A system configured to reduce the amplitude of reactive current present on a DC bus shared by multiple inverters is disclosed. The start of the switching period for the modulation routines of each inverter is synchronized, and a carrier phase angle is determined for a carrier signal within each of the inverters. The modulation routine of each inverter generates a reactive current on the shared DC bus. By controlling the carrier phase angle for each inverter, the reactive current of a first inverter may be generated at a phase angle that is offset from the phase angle of the reactive current generated by a second inverter. As a result, the reactive current from the first inverter cancels at least a portion of the reactive current from the second inverter, reducing the total reactive current present on the DC bus.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: December 6, 2016
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Rongjun Huang, Craig Winterhalter, Mark Gries, Ye Li
  • Patent number: 9509901
    Abstract: An imaging apparatus includes an imaging unit, a display unit, an interested-position obtaining unit, a zoom operation obtaining unit and an image-processing unit. The imaging unit is configured to image an image of an object through a lens. The display unit is configured to display the image imaged by the imaging unit. The interested-position obtaining unit is configured to obtain specification of an interested position in the image displayed on the display unit. The zoom operation obtaining unit is provided for the lens and is configured to obtain a zoom operation. The image-processing unit is configured to perform, on the image, an electronic zoom processing of enlarging the interested position, in accordance with the zoom operation.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: November 29, 2016
    Assignee: Olympus Corporation
    Inventors: Yoshinori Matsuzawa, Osamu Nonaka
  • Patent number: 9243448
    Abstract: The present disclosure includes systems, methods, and articles of manufacture for controlling a door. In various embodiments, exemplary systems may include a controller that may initialize and/or reset a limit count. A controller may initialize and/or reset a limit count in response to detection by a first position sensor of a first target. A controller may further initialize and/or reset a limit count by incrementing the limit count in response to a signal from a gear tooth sensor until a second position sensor detects a second target, whereupon the controller may store the limit count.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: January 26, 2016
    Inventors: Xin Cui, Jeffrey L. Mueller, Michael D. Mankoski, G. Bruce Burwell
  • Patent number: 9160256
    Abstract: A system for controlling an electromechanical device includes a motor drive, a main controller, a voltage regulator and a resistor-capacitor circuit. The motor drive controls an electric motor of the electromechanical device. The main controller provides motor commands to control the motor drive that are provided by providing command voltage on at least one command line. The voltage regulator circuit receives the command voltage and provides a motor voltage to power the motor drive. A capacitor of the resistor-capacitor circuit is charged by the command voltage, and the motor voltage is controlled based upon charge of the capacitor.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: October 13, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Ronald P. Bauer
  • Patent number: 9035592
    Abstract: Disclosed herein are an apparatus and a method for controlling a speed of a motor. An apparatus for controlling a spaced of a motor according to an exemplary embodiment of the present invention includes: a PWM conversion unit detecting a hall sensor signal from a motor to output a pulse width modulated signal corresponding to the detected hall sensor signal; a duty detection unit detecting a duty value of the pulse width modulated signal output by the PWM conversion unit; an error calculation unit comparing a PWM duty input from the outside with a duty detected by the duty detection unit to obtain an error; and a speed control unit controlling a speed of a motor based on an error obtained by the error calculation unit.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 19, 2015
    Inventor: Bon Young Gu
  • Patent number: 8890457
    Abstract: Systems and methods for controlling motors are provided. In this regard, a representative system, among others, includes memory, a motor controller, and a motor. The memory is configured to store sequence information and the motor controller is configured to: receive instructions from a processing device of the system, receive the stored sequence information based on the received instructions, generate at least one drive signal based on the received sequence information, and transmit the at least one drive signal. The motor is configured to be operated based on the transmitted drive signal.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: November 18, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric F. Aas, Justin Forrester, Jeffrey D. Schwartz
  • Patent number: 8860340
    Abstract: The present invention is provided to remove dust that adhered to a cooling fan. A plurality of comparators are disposed for each of a plurality of coils, respectively, and generates a back electromotive force sensing signal denoting a comparison result by comparing a back electromotive force appearing at one end of each corresponding coil with a neutral-point voltage of the coils. A driving signal synthesis circuit generates a driving control signal used to enable the fan motor to proceed the following actions: (i) enabling the fan motor to rotate toward the opposite direction as a normal operation within a specific reverse rotation period after a driving of the fan motor is started, (ii) applying a brake to the fan motor within a braking period, and (iii) enabling the fan motor to rotate toward a direction of normal operation in a normal driving period. A driving circuit drives the fan motor.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: October 14, 2014
    Assignee: Rohm Co., Ltd.
    Inventors: Shinsuke Sano, Toshiya Suzuki
  • Patent number: 8796961
    Abstract: A complex joystick system master unit embodiment utilizes joystick segments and joystick joints arranged in a particular order with a slave unit arranged in a similar order. A sample master unit with three joystick segments has segment lengths that provide a relative ratio of lengths between themselves. The slave unit articulated arm utilizes controlled segments and articulated arm joints arranged in the same order and having the same relative ratio of lengths between themselves. Articulated arm electronic angle sensors and joystick segment angle sensors produce signal that are applied to a plurality of servos. The servos control movement of the articulated arm so that said respective relative angular articulated arm positions of the articulated arm controlled segments match those of the complex joystick segments.
    Type: Grant
    Filed: May 15, 2011
    Date of Patent: August 5, 2014
    Inventors: Ken Kobayashi, Herbert S. Kobayashi
  • Patent number: 8716962
    Abstract: A variable speed trigger mechanism that allows a user to reverse a direction of a motor and supply variable amounts of power to the motor using a single trigger mechanism. In a first motion, the user can actuate the reversing module to change the direction of the motor coupled to the trigger mechanism. In a second motion, the user can actuate the same trigger and apply variable amounts of power to the motor.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: May 6, 2014
    Assignee: Snap-on Incorporated
    Inventors: Daniel Pusateri, Kenneth Happ, James Brehm
  • Patent number: 8610389
    Abstract: Disclosed here is a speed control apparatus for a switched reluctance motor (SRM) including: a current control unit generating command currents for each period; a driving unit generating a pulse width modulation (PWM) signal to allow a voltage to be applied to the SRM; a magnetic flux error calculating unit calculating a magnetic flux error; a rotor position estimating unit calculating an estimation position using the magnetic flux error to output the estimation position to the magnetic flux error calculating unit; and a mode change-over unit allowing a command position corresponding to a command speed to be input to the magnetic flux error calculating unit.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: December 17, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Dong Hee Lee, Jin Woo Ahn, Geun Min Lim, Byeong Han Kim
  • Patent number: 8593097
    Abstract: A seat adjusting device for an automobile seat (1) having an electric motor (11) for generating a drive motion, wherein the electric motor is operationally coupled to a gearbox (13) for transmitting the drive motion thereof, the gearbox having a gearbox housing (19) in which gearbox elements are disposed for a step-up or step-down transmission of the motor drive motion, by means of which electric motors of lesser technical complexity can be used than previously. To this end, the invention proposes that the gearbox (13) has detection device for detecting information about the speed of at least one of the gearbox elements or detecting a variable dependent on the speed.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: November 26, 2013
    Assignee: Keiper GmbH & Co. KG
    Inventor: Andreas Diehl
  • Patent number: 8569985
    Abstract: In a wiper control apparatus, a water drop detector outputs an output signal in accordance with water drops adhering to a windshield of a vehicle. When a traveling determination portion determines that the vehicle is traveling, a first level setting portion sets a sensitivity for detecting the output signal to a first sensitivity. When the traveling determination portion determines the vehicle is not traveling, a second level setting portion sets the sensitivity for detecting the output signal to a second sensitivity that is larger than the first sensitivity. A water drop adhesion determination portion determines that water drops adhere to the windshield when a determination waiting time elapses in a state where detection of the output signal continues. A driving control portion controls a wiper driving portion to drive the wiper when the water drop adhesion determination portion determines that water drops adhere to the windshield.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: October 29, 2013
    Assignees: Denso Corporation, Mazda Motor Corporation
    Inventors: Taiji Morishita, Yasuhiro Takabe, Hiroshi Miyazaki, Katsunori Tonomyo
  • Patent number: 8564227
    Abstract: In order to activate a control element (4) of a drive apparatus (1) for driving an object that can be moved between two end positions, the control element having a response delay (?tanspr) a parameter (Fakt) influenced by the drive apparatus (1) is monitored and compared with a specified threshold (FTh), upon the achievement of which a control signal is output to the control element (4); a pre-threshold (Fv) to be achieved before the achievement of the threshold (FTh) is defined, upon the achievement of which pre-threshold a pre-control signal is output to the control element (4) for the preparatory activation thereof, and afterwards further monitoring for the achievement of the actual threshold (FTh) is performed, wherein upon achievement of the actual threshold (FTh), the control element activation is retained, whereas if the actual threshold (FTh) is not achieved, the control element activation is rescinded.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: October 22, 2013
    Assignee: Continental Automotive GmbH
    Inventor: Christian Stöger
  • Patent number: 8519660
    Abstract: An electrical device removal tool for electrical equipment, such as circuit breakers, is disclosed herein. The tool can be lightweight, portable, and rugged for providing electrically operated controlled insertion and removal of the electrical equipment by an operator from a remote location using a coupling device engaged with the electrical equipment housing.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: August 27, 2013
    Inventors: Ashley Sue Ledbetter, Finley Lee Ledbetter
  • Patent number: 8508159
    Abstract: A device for controlling the movement of a both motorically and manually movable vehicle part includes a drive unit controllable in its rotational speed for motorically moving the vehicle part, a coupling device for coupling the drive unit with the vehicle part, and a control unit which controls the drive unit and the coupling device such that during manually moving the vehicle part the coupling device couples the drive unit with the vehicle part if the vehicle part has reached a pre-defined position. The control unit controls the rotational speed of the drive unit depending on the moving speed of the vehicle part. In this way, a device and a method are provided which in an easy and low-wear manner allow for a control of the movement of a both motorically and manually movable vehicle part.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: August 13, 2013
    Assignee: Brose Fahrzeugteile GmbH & Co. KG, Coburg
    Inventors: Christian Herrmann, Stephan Deister
  • Patent number: 8502491
    Abstract: A rotation direction control method of a cooling fan is disclosed. The rotation direction control method includes a detection step, a determination step and a driving step. The detection step receives a temperature control signal from a temperature detection unit by a rotation direction control unit when a predetermined dust-expelling time period begins. The determination step determines whether a detected temperature is higher than a predetermined value based on the temperature control signal by the rotation direction control unit. The driving step controls the rotation direction control unit to keep outputting a cooling signal so as to drive a motor of the cooling fan for a cooling operation when the determination of the determination step is positive.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: August 6, 2013
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Ching-Sheng Hung
  • Patent number: 8476853
    Abstract: An overspeed protection subsystem is provided for a power tool having an electric motor. The overspeed protection subsystem is comprised of: a motor switch coupled in series with the motor; a motor control module interfaced with the motor switch to control switching operation of the motor switch; and an overspeed detection module that determines rotational speed of the motor and disables the power tool when the rotational speed of the motor exceeds a threshold.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: July 2, 2013
    Assignee: Black & Decker Inc.
    Inventors: John C. Vanko, Robert A. Usselman, David Beers
  • Patent number: 8476858
    Abstract: A refrigerator and a method for controlling the same are provided. In this refrigerator and control method, a receiving box may be automatically drawn in and out together with a door based on a movement command received at an input unit, thus enhancing user convenience and satisfaction.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: July 2, 2013
    Assignee: LG Electronics Inc.
    Inventors: Yong Hwan Eom, Myung Keun Yoo, Hyoun Jeong Shin, Ok Sun Yu, Young Jin Kim, Seung Do Han
  • Patent number: 8461785
    Abstract: A speed controller for a small electric motor is described. The controller is used to control small electric motors such as those used in small power tools such as electric screwdrivers. A series of electrical components are used to allow the motor to remain idle until a load is applied to the motor. When a load is applied to the motor, it increases in speed quickly to its maximum speed and remains there until the load is removed from the motor.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: June 11, 2013
    Inventor: Dalwinder Singh Sidhu
  • Patent number: 8427084
    Abstract: A digital motor control system utilizes at least two variable pulse generators to produce two streams of pulse width modulated pulses to control the motor speed and direction of rotation of a motor. An input control signal may be compared with two reference signals, such as two waveforms which are inverted with respect to each other, to produce two streams of pulse width modulated signals. A logic circuit combines the two streams of pulses.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: April 23, 2013
    Inventor: Herbert S. Kobayashi
  • Patent number: 8400093
    Abstract: A system for detecting a backspin condition of a motor in an electrical submersible pump is disclosed herein. The system comprises a sensor mounted proximate to the motor, the sensor outputting a signal, a power cable connected between a motor and a controller, the power cable supplying a three phase AC voltage to the motor, one phase of the three phase signal having a control signal thereon; electronics connected to the sensor, the electronics receiving the signal and propagating the signal to the controller; and a computer defining the controller, the controller having a non-transitory memory, a computer processor, and a computer program product stored on the memory and executable by the processor, the computer program product performing a process of controlling the variable speed drive of the motor and a process of monitoring the signal from the sensor to determine if the motor is backspinning.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: March 19, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Dick L. Knox, Robert H. McCoy, Jerald R. Rider
  • Patent number: 8334666
    Abstract: A system for detecting a backspin condition of a motor in an electrical submersible pump is described herein. The system comprises a variable speed drive for powering the motor via a power cable; and a controller, the controller having a memory, a computer processor, and a computer program product stored on the memory and executable by the processor. The computer program product comprises the instructions of: monitoring an input current or impedance on the power cable to determine changes in motor current impedance, comparing changes in the motor current impedance to a historical threshold value for backspin events to determine whether the motor is backspinning; impeding operable power to the motor when it is determined the motor is backspinning; supplying a low AC voltage to the motor after it is determined the motor is backspinning; and determining whether or not the motor has stopped backspinning by monitoring the low AC voltage.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: December 18, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Sheldon Plitt, John M. Leuthen
  • Patent number: 8310178
    Abstract: A motor control apparatus for controlling a DC motor includes a detection unit configured to detect an angular speed of the DC motor, and a control unit configured to, when the DC motor is accelerated, increase a control value that controls a driving of the DC motor at a constant rate from a first control value corresponding to an angular speed lower than a target angular speed up to a second control value corresponding to an angular speed higher than the target angular speed, and switch the control value that controls the driving of the DC motor to a control value corresponding to the target angular speed in response to the detection result of the detection unit reaching the target angular speed.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: November 13, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoritsugu Maeda
  • Patent number: 8269450
    Abstract: A winding switching apparatus includes a winding switching device and a drive circuit. The winding switching device is configured to switch a plurality of windings of an AC motor. The drive circuit is configured to control the winding switching device. The winding switching device includes a winding switch, a diode bridge, and a capacitor. The diode bridge includes a positive-side DC output terminal, a negative-side DC output terminal, and AC input terminals. The AC input terminals corresponds to respective phases of the AC motor. The positive-side and negative-side DC output terminals are respectively connected to positive-side and negative-side DC buses provided in an inverter. The AC input terminals are respectively connected to winding-switching terminals corresponding to the respective phases of the AC motor. The AC input terminals are respectively connected to phase terminals provided in the winding switch.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 18, 2012
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Koji Higashikawa, Kenji Yamada, Katsutoshi Yamanaka
  • Patent number: 8264176
    Abstract: A fan arrangement (20) has a fan (24) driven by an electric motor (22), also an apparatus for detecting the electrical power (PIST) consumed by the electric motor (22) during operation; an input apparatus (28) for inputting a desired rotation speed (nSOLL) of said electric motor (22); a converter (26) for converting said desired rotation speed (nSOLL) into a desired electrical power (PSOLL); and a controller (44), which regulates the control input controlling the electric motor (22) in such a way that the difference between the electrical power (PIST) consumed in operation and the desired electrical power (PSOLL) is reduced, in order thereby to improve the air output characteristic curve (49, 58) of the fan arrangement (20) at least in a portion of the overall operating range.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: September 11, 2012
    Assignee: EBM-Papst St. Georgen GmbH & Co. KG.
    Inventors: Markus Gutmann, Arno Karwath, Thomas Dufner
  • Patent number: 8217598
    Abstract: A method of driving a vibration wave motor enables proper frequency control of an AC voltage applied to the motor according to the rotational speed difference between the actual and target rotational speeds of the motor, even if frequency-rotational speed characteristics are not stored in advance. A target rotational speed of a moving member is set. A ratio of an amount of increase or decrease in a rotational speed of the moving member to an amount of update of a frequency of the AC voltage and a rotational speed difference between the target rotational speed and an actual rotational speed of the moving member are calculated. The amount of update of the frequency is calculated by dividing the calculated rotational speed difference by the calculated ratio. The frequency of the AC voltage is updated by using the calculated amount of update of the frequency.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: July 10, 2012
    Assignees: Canon Kabushiki Kaisha, Canon Precision Inc.
    Inventors: Toshihisa Komai, Makoto Shiomi
  • Patent number: 8198837
    Abstract: A DC motor control device calculates motor speed using determinations of motor field flux and armature voltage in the motor. The device includes a control module having one or more control inputs and one or more control outputs. At least one control input is configured to receive data representing field current measured in the DC motor. The control module includes flux curve logic that is responsive to measurements of motor field current to calculate a field flux in the motor. The flux curve logic uses a flux curve stored in the control module, the flux curve representing a functional relationship between field current and field flux in the motor. The flux curve is defined by a plurality of flux curve data points corresponding to a plurality of motor field currents within a lower current range and within an upper current range. The flux curve is further defined by at least a first flux curve line positioned within the lower current range and a second flux curve line positioned within the upper current range.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: June 12, 2012
    Assignee: Magnetek, Inc.
    Inventor: Jason Wellnitz
  • Patent number: 8193744
    Abstract: A method for controlling the speed of an AC motor by means of an AC motor speed control having a plurality of capacitors operable to be selectively coupled in parallel electrical connection, the parallel coupled capacitors operable to be coupled in series electrical connection with the AC motor, the method comprising charging the capacitors up to substantially the same predetermined voltage prior to combining the capacitors in parallel electrical connection.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: June 5, 2012
    Assignee: Lutron Electronics Co., Inc.
    Inventors: James P. Steiner, Aaron Dobbins, Chen Ming Wu
  • Patent number: 8188691
    Abstract: The present disclosure is an apparatus for controlling movement of a decoy. The apparatus for controlling movement of a decoy may include a motor and a housing. The motor may cause movement of a decoy coupled to the motor to simulate movement of an animal. The apparatus for controlling movement of a decoy may include a shaft which couples to the motor and the decoy whereby the motor may cause axial rotation of the decoy.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: May 29, 2012
    Inventor: Steven J. Twohig
  • Patent number: 8169169
    Abstract: A door operator for controlling operation of a door, the door operator having a motor to open the door against a spring force, the door operator further comprising a door position sensor for transmitting a signal indicative of door position; and among other things, calculates a door moment of inertia based on a net torque and the time for the door to reach a predetermined angle from the closed position. Also provided is a door operator that compares door speed to a desired door speed based on a door speed-position profile and generates a door speed error signal and minimizes the door speed error signal by adjusting the braking load resulting from charging a chargeable battery using the motor as a generator.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: May 1, 2012
    Inventors: Brian Hass, Eric Dube
  • Patent number: 8154240
    Abstract: A control apparatus for an electric railcar includes an inverter that exchanges power with an AC rotating machine, a filter capacitor connected in parallel to a DC side of the inverter, a filter reactor provided between the filter capacitor and an overhead line, an overhead line voltage measuring instrument that measures a voltage value of the overhead line, a voltage increase detection unit that senses an amount of voltage increase occurring when, with an overhead line voltage being supplied, the overhead line voltage goes beyond a reference voltage value and rises at a rate equal to or higher than that by a predetermined time constant.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: April 10, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideto Negoro, Masaki Kono
  • Patent number: 8115424
    Abstract: The present invention relates to a method of controlling the speed of rotation of a piezoelectric motor comprising at least one step of determining the variation of the speed of rotation as a function of the frequency of the excitation voltages of the piezoelectric motor for the actual temperature of the piezoelectric material.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: February 14, 2012
    Assignee: Sagem Defense Securite
    Inventors: Julien Aragones, Jacques Robineau