Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217)
11/2008
11/05/2008CN201146480Y Fan DC motor controller
11/05/2008CN101300732A Drill with solid state speed control and method of operating
11/05/2008CN100430728C Method for testing speed of electric machine
11/04/2008US7446499 Position detecting apparatus having electric motor and method for detecting position
11/04/2008US7446492 Fan system and stopping method for motor thereof
10/2008
10/30/2008WO2008130982A1 Method of controlling a motorized window treatment
10/30/2008WO2008130560A1 Three degree of movement mover and method for controlling the same
10/30/2008US20080265859 Electronic device for controlled failure
10/30/2008US20080265830 Systems and methods for controlling torque of a motor
10/30/2008US20080265825 High-Current High-Resolution Driving Circuit
10/30/2008US20080265820 Motor driving circuits
10/30/2008US20080265811 DC motor variable kick-start
10/30/2008US20080265810 DC motor structure for hoist machine
10/30/2008CA2684642A1 Method of controlling a motorized window treatment
10/29/2008CN201140678Y Chopped wave speed regulating device of DC electric locomotive
10/28/2008US7444070 Fan motor with digital controller for applying substantially constant driving current
10/28/2008US7443122 Electric drivetrain thermal protection system
10/28/2008US7443118 Method and device for triggering an electric motor
10/28/2008US7443117 Control apparatus for electric vehicles
10/23/2008US20080260525 Device For Supplying Pulse Width-Modulated Output Pulses For the Motor of a Fan
10/23/2008US20080260363 Method of Controlling a Motorized Window Treatment
10/23/2008US20080260362 Method and system for operating a motor to avoid selected pulse ratio values
10/23/2008US20080260361 Method and apparatus for active noise reduction in fans
10/23/2008US20080258664 Fan circuit with a fan speed control circuit
10/23/2008US20080258661 Inverter topology for an electric motor
10/23/2008US20080258660 Method for detecting initial magnetic pole position in permanent-magnet motor
10/22/2008EP1216526B1 Reduction of emi through switching frequency dithering
10/22/2008CN201138777Y DC electric machine with brush in seam
10/22/2008CN201138740Y Anti-stall apparatus for series-excited motors when idle loaded
10/22/2008CN100428621C Variable frequency control device of brushless DC motor
10/22/2008CN100428620C Vehicle electric booster steering system controller
10/21/2008US7439698 Electric motor system
10/16/2008WO2007149360A3 Hands free waste flap apparatus and method
10/16/2008US20080253753 Brushed Motor Control with Voltage Boost for Reverse and Braking
10/16/2008US20080253752 Method for detecting and controlling output characteristics of a dc motor and a self-propelled apparatus using the same
10/16/2008US20080253751 Method and apparatus for controlling rotational speed of fan
10/16/2008US20080253750 Protect-control device capable of limiting current for reducing noise resultling from switchover of motor
10/16/2008US20080252285 Machine with a rotary position-sensing system
10/16/2008US20080252245 Motor Driving Circuit Having Low Current Consumption under a Standby Mode
10/16/2008US20080252241 Sensorless driving method for brushless dc motor
10/16/2008US20080252239 Method capable of controlling brushless dc motor
10/15/2008CN101286719A Motor driving device, lockedrotor protecting method and cooling device using the same
10/15/2008CN100426654C Precision current sensor used for electric machine control
10/15/2008CN100426653C Quick current-sensing device for motor control
10/15/2008CN100426652C Torque ripple and noise reduction by avoiding mechanical resonance for a brushless DC machine
10/15/2008CN100426401C Disk tray mechanism for reproducing apparatus
10/14/2008US7437215 Method and system for improving pump efficiency and productivity under power disturbance conditions
10/14/2008US7436154 Vehicle generator control device
10/14/2008US7436147 Motor driving apparatus
10/14/2008US7436138 Methods and systems for emulating an induction motor utilizing an electronically commutated motor
10/09/2008US20080247735 Adaptive and reconfigurable system for dc motor control
10/09/2008US20080247734 Motor driving circuit
10/08/2008EP1649590B1 Load driver capable of suppressing overcurrent
10/08/2008CN100424987C Circuit for controlling fan rotating speed
10/08/2008CN100424986C Device for controlling motor oscillating by audio frequency
10/08/2008CN100424961C Cordless power tool with tool identification circuitry
10/08/2008CN100424378C Actuator control system
10/07/2008US7432678 Motor driving apparatus and control method thereof
10/07/2008US7432675 Method of removing foreign particles from heat transfer surfaces of heat sinks
10/07/2008US7432673 Method, medium, and apparatus controlling current gain change of a spindle motor driver
10/02/2008US20080240688 Fan controller with duty cycle comparator
10/02/2008US20080238349 Method and circuit for controlling motor and brushless motor system using the same
10/02/2008US20080238348 Rotary, limited rotation bi-directional, direct current actuator
10/02/2008US20080238233 Fault-tolerant permanent magnet machine with reconfigurable stator core slot opening and back iron flux paths
10/02/2008DE10082533B4 Verfahren zur Einstellung einer Ist-Geschwindigkeit der Hubbewegung einer Fensterscheibe Method for setting an actual speed of the lifting movement of a window pane
10/01/2008EP1974459A2 Systems and methods of monitoring a motor load
10/01/2008CN201124136Y Backpack type high pressure electric sprayer
10/01/2008CN100422528C Hybrid type working machine
09/2008
09/30/2008US7429836 Motor driver circuit, control method thereof, and electronic apparatus
09/25/2008US20080234897 Power Supply Controller
09/25/2008US20080231218 Apparatus and method of driving motor, and drive apparatus using the same
09/25/2008US20080230302 Motor-Driven Power Steering Apparatus
09/25/2008US20080230035 Fluid pump control apparatus
09/25/2008DE102007013711A1 Verfahren und Vorrichtung zur Dreherfassung eines bürstenbetriebenen Gleichstrommotors Method and apparatus for rotation sensing a brush-operated dc motor
09/24/2008CN201122924Y LED/LCD velocity-displaying electric clippers
09/24/2008CN100421345C DC-to-AC converter
09/23/2008US7428439 Wireless foot control system with optical transmitter and transceiver
09/23/2008US7427843 Electrically operated power steering controller and adjusting method of driving electric current offset in this controller
09/23/2008US7427842 Series motor and method of controlling the same
09/18/2008US20080226266 Control Apparatus for and Control Method of Controlling Motor for Vehicle
09/18/2008US20080224642 System and related methods for diagnosing operational performance of a motorized barrier operator
09/18/2008US20080223059 Control Method and System
09/18/2008DE102007055837A1 Last-Ansteuerverfahren Load-driving
09/18/2008DE102007012211A1 Motor control current controlling method, involves limiting output level of drive unit for coil corresponding to signal from sensor by controller, where controller has pulse width modulation input for pulse width modulation signal
09/18/2008DE102007012172A1 Current limiting controller for use in drive switch, has sensor detecting control level for coil, where controller adjusts control level of drive unit for coil corresponding to signal from sensor
09/17/2008EP1969710A2 Method and apparatus for sensorless position control of a permanent magnet synchronous motor (pmsm) drive system
09/17/2008CN201118504Y A speed-adjusting device for car front processing technology
09/17/2008CN101267178A A start method for DC frequency conversion compressor
09/17/2008CN100420145C A low-loss, high reliability integration magnetic levitation flywheel DC brushless motor control system
09/17/2008CN100420143C Control method and control circuit for brushless DC motor
09/17/2008CN100420130C H-bridge with single lead frame
09/12/2008WO2008109328A1 Brushed motor control with voltage boost for reverse and braking
09/12/2008WO2008022841A3 Method for determining the rotation speed of a starter
09/11/2008US20080219649 Motor drive device and electric apparatus using the same
09/11/2008US20080219648 Circuit and method for controlling the rotating speed of a bldc motor
09/10/2008EP1966881A1 Supply architecture for inductive loads
09/10/2008EP1966879A1 Method and device for operating an electric motor
09/10/2008CN201113877Y Dc motor energy storage device
09/10/2008CN201113876Y Oil pumping machine dedicated multi- power integral energy-saving actuator
09/10/2008CN101263649A Apparatus and process for controlling and adjusting the operation of electric motor actuated devices
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