Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217)
11/2004
11/02/2004US6812658 Drive unit
11/02/2004US6812656 Sequenced pulse width modulation method and apparatus for controlling and powering a plurality of direct current motors
10/2004
10/28/2004WO2004093287A1 Method and sytem for controlling the reactive power of a variable speed drive
10/28/2004US20040213558 Control circuitry for controlling rotational speed of a DC motor
10/28/2004US20040213072 Boost capacitor layout technique for an H-bridge integrated circuit motor controller to ensure matching characteristics with that of the low-side switching devices of the bridge
10/28/2004US20040212359 Rotor position determination in a switched reluctance machine
10/28/2004US20040211200 Current control loop for actuator and method
10/28/2004DE19935100B4 Halbbrückenkonfiguration Half-bridge configuration
10/28/2004DE10316641A1 EMV-optimierte Vorrichtung zur Ansteuerung eines Gebläses EMC-friendly device for driving a blower
10/27/2004EP1471630A2 Three phase machine, apparatus and method for supplying a electrical network
10/27/2004EP1471629A2 Rotor position determination in a switched reluctance machine
10/27/2004EP1470630A1 Device for suppressing the radio-interference of an electric commutator
10/27/2004EP1008233B1 Current supply device for a d.c. motor drive system, especially comprising travel-dependent detection of parameters of the driven object
10/27/2004CN2652038Y Feedback electrical vibrator controller with double-circuit current
10/27/2004CN1540834A Circuit supplying power from generator driven by inertial force of electric rotating motor and internal-combustion engine
10/27/2004CN1173549C Speed control device for motor of scanner and control method
10/26/2004US6809488 Method for determining the position of an element driven by the drive shaft of a direct current motor
10/26/2004US6809484 Multiple electronically commutated motor control apparatus and method
10/21/2004US20040210701 Method of providing an interface to a plurality of peripheral devices using bus adapter chips
10/21/2004US20040207360 Inverter controller for driving motor, and air conditioner
10/21/2004US20040207353 Method and apparatus for synchronizing a scan operation with the motion of the scan mechanism
10/20/2004EP1105964B1 Circuit for regulating the rotational speed of a fan
10/20/2004CN1538584A Motor control equipment
10/19/2004US6806673 Fan driving circuit using a PWM input signal
10/19/2004US6806672 Movable barrier operator
10/19/2004US6806667 Control unit and control method for controlling vibration of an electric vehicle
10/14/2004US20040201354 Vsd control
10/14/2004US20040200663 Electric motor-driven power steering apparatus
10/14/2004US20040200017 Surface maintenance tool power control system
10/13/2004EP1467479A1 Drive device for a closing unit
10/13/2004EP1467476A2 Device with an electromotor
10/13/2004CN1536118A Sewing machine and recording medium recorded with pulse electric machine control program
10/07/2004US20040195989 DC motor control
10/07/2004US20040195986 Movable barrier operator
10/07/2004DE10356844A1 Positionssteuerungsverfahren durch Motorantrieb und zugehörige Steuereinheit Position control method by motor drive and associated control unit
10/07/2004DE102004011441A1 Motorsteuervorrichtung The motor control apparatus
10/07/2004DE102004010687A1 Servomotor mit eingebauter Treiberschaltung Servo motor with integrated driver circuit
10/06/2004EP1465332A2 DC Motor control based on motor temperature
10/06/2004EP1279219B1 Electrohydraulic converter, especially a motor pump module for an electronic driving dynamics control system
10/05/2004US6801420 Selective potting for controlled failure and electronic devices employing the same
10/05/2004US6801009 Current limitation process of brush and brushless DC motors during severe voltage changes
10/05/2004US6800978 Contact washer system and method for controlling a windscreen wiper motor
09/2004
09/30/2004WO2004084397A2 Control and monitoring arrangements for an aperture closure member
09/30/2004US20040190881 Electrical resonance circuits for high efficiency direct current motors
09/30/2004US20040189229 H-bridge drive utilizing a pair of high and low side MOSFET's in a common insulation housing
09/30/2004US20040189225 Driving control device for actuator
09/30/2004DE10232717B4 Gebläseansteuerung für Kühlungsgebläse an Fahrzeugen Fan control for cooling fan on vehicles
09/30/2004DE102004012886A1 Motorsteuervorrichtung The motor control apparatus
09/30/2004DE102004010394A1 Strom-Controller für induktive Last Current controller for inductive load
09/29/2004EP1461864A2 Selective potting for controlled failure and electronic devices employing the same
09/29/2004CN2645345Y Portable digital power generating set
09/29/2004CN1533023A Controller for inductive load current
09/29/2004CN1532503A 冰箱 Refrigerator
09/28/2004US6798162 12/42 volt DC brush motor control system
09/28/2004US6798159 VSD control
09/28/2004US6796475 Speed controller for flywheel operated hand tool
09/23/2004WO2004072130A3 Method and device for controlling a direct current motor
09/23/2004WO2004070882A3 Multiphase motor voltage control for phase windings of different wire gauges and winding turns
09/23/2004WO2004068691A3 Method and control circuit for triggering an electric motor by means of a pulse width modulation signal
09/23/2004US20040186641 Control method for electric power steering apparatus
09/23/2004US20040184206 Motor control apparatus
09/22/2004EP1459437A1 Method and circuit arrangement for protecting an electric motor from an overload
09/22/2004EP1459434A1 Circuit arrangement for operating an electrical machine
09/22/2004CN1531185A Motor driving circuit and method
09/22/2004CN1531178A DC-to-AC converter
09/22/2004CN1531172A Servo-type motor with built-in driving circuit
09/16/2004US20040179830 PWM driving apparatus
09/16/2004US20040179829 Amperage control for protection of battery over current in power tools
09/16/2004US20040178782 Current controller for inductive load
09/16/2004US20040178759 Motor driving device
09/16/2004US20040178756 Prediction of available torque and power from battery-powered traction motor
09/16/2004US20040178755 Motor drive circuit and motor drive method that can positively perform a brake operation
09/15/2004EP1458085A2 PWM output driver for two loads
09/15/2004EP1088387B1 Device with an electromotor
09/15/2004EP0865681B1 Process for controlling a physical quantity, and arrangement for carrying out said process
09/14/2004US6791911 Motion control system for a CD carousel loader using a braking circuit
09/14/2004US6791290 Electrohydraulic converter
09/14/2004CA2396624C Railway switch machine motor control apparatus
09/09/2004US20040174133 Servo motor with a built-in drive circuit
09/09/2004US20040174128 Circuit using current limiting to reduce power consumption of actuator with DC brush motor
09/09/2004DE10307997A1 Antriebssteuereinrichtung für einen selbstgeführten Stromrichter Drive control device for a self-commutated converter
09/02/2004US20040169968 Method and circuit arrangement for protecting an electric motor from an overload
09/02/2004US20040169484 Robot apparatus, and load absorbing apparatus and method
09/02/2004US20040169479 Multiple-speed electric machine and method of operating the same
09/01/2004CN1526195A Microprocessor for controlling the speed and frequency of a motor shaft in a power tool
09/01/2004CN1525637A 电机控制装置 The motor control device
08/2004
08/31/2004US6784687 Diagnostic device for electric mechanism drive circuits
08/31/2004US6784629 Dual function solid state relay
08/26/2004WO2004072130A2 Method and device for controlling a direct current motor
08/26/2004US20040165869 Speed control circuit for a brushless dc motor
08/26/2004US20040164773 Fan driving circuit using an adaptive PWM input signal
08/26/2004US20040164699 Fan driving circuit using a PWM input signal
08/26/2004US20040164694 Drive controller for a self-commutated converter
08/26/2004US20040164690 Method and system for controlling a motor
08/26/2004DE10306329A1 Direct current motor control method for an actuator positioning motor that positions an actuator along a predefined path, whereby final position is calculated from current cumulative rotation angle plus a calculated braking angle
08/26/2004DE102004007425A1 Steuereinheit zur elektrisch unterstützten Lenkung Control unit for electric power steering
08/25/2004EP1449000A2 Control device
08/25/2004EP0500852B2 Positioning control
08/25/2004CN1523748A Thermal fan driver module applied to power supply system or power supplier
08/25/2004CN1523725A Over current protective amperage control for battery of electric tool
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