| Patents for H02P 25 - Arrangements or methods for the control of ac-motors characterised by the kind of ac-motor or by structural details (7,591) |
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| 08/02/2001 | US20010010452 Rotor position monitoring of a reluctance drive |
| 08/02/2001 | DE19961798A1 Verfahren und Anordnung zur Regelung des Stroms in einer geschalteten Reluktanzmaschine Method and apparatus for controlling the current in a switched reluctance machine |
| 07/31/2001 | US6269013 Chopping energization control device |
| 07/26/2001 | WO2001054265A1 Speed control for induction motor with variable voltage-frequency ratio |
| 07/26/2001 | DE10002922C1 Electronic control for electric handtool has different control programs for electric motor selected via manual operating switch operating element |
| 07/26/2001 | DE10002706A1 Verfahren zur Steuerung der Umrichterschaltung einer geschalteten Reluktanzmaschine A method for controlling the converter circuit of a switched reluctance machine |
| 07/25/2001 | EP1119098A2 Method for controlling a converter circuit of a switched reluctance machine |
| 07/25/2001 | EP1118994A2 Method and apparatus for ramp loading in a hard disk drive |
| 07/25/2001 | CN1069002C System for controlling elevator door |
| 07/19/2001 | US20010008355 Self-oscillation system for driving a linear oscillatory actuator around its resonant frequency |
| 07/18/2001 | EP1117176A2 Self-oscillation system for driving a linear oscillatory actuator around its resonant frequency |
| 07/18/2001 | EP0928493A4 System and method for servo control of nonlinear electromagnetic actuators |
| 07/18/2001 | CN1068734C Microprocessor based motor control system with phase difference detection |
| 07/17/2001 | US6262510 Electronically switched reluctance motor |
| 07/12/2001 | WO2001050589A1 Apparatus for continuously variable speed electric motor applications |
| 07/12/2001 | WO2001050108A1 Device for measuring rotor imbalance |
| 07/12/2001 | US20010007416 Device and method for determining step-out of synchronous motor |
| 07/12/2001 | DE10056199A1 Rotational speed detection method for asynchronous machine, involves determining undershoot in current of asynchronous machine to determine rotational speed |
| 07/12/2001 | DE10000235A1 Vorrichtung zum Messen einer Rotorunwucht An apparatus for measuring a rotor unbalance |
| 07/12/2001 | CA2395956A1 Apparatus for continuously variable speed electric motor applications |
| 07/11/2001 | EP1115196A2 Motor control device |
| 07/11/2001 | EP1114989A2 Device for measuring an unbalance of a rotor |
| 07/11/2001 | EP0857119B1 Controller for devices driven by linear motors |
| 07/05/2001 | WO2001048907A1 Food processor motor controller |
| 07/05/2001 | WO2001039588A8 High stability dynamic force reluctance motor |
| 07/04/2001 | EP1112912A1 Method and apparatus for detecting a motor stall condition in an electric assist steering system |
| 07/03/2001 | US6256211 Circuit device for driving an a.c. electric load |
| 07/03/2001 | US6255797 AC motor with reactor interposed between AC motor and power source |
| 06/27/2001 | EP1110301A1 Method for controlling a current-regulated motor |
| 06/27/2001 | CN1067817C Driving apparatus of switched reluctance motor |
| 06/26/2001 | US6252372 Method and system for varying and regulating a motor speed |
| 06/26/2001 | US6252364 Method and apparatus for unlatching an actuator |
| 06/26/2001 | US6252331 Brushless, separately-excited, variable-speed motor and AC generator/alternator with solenoid-wound, biphase AC rotor |
| 06/26/2001 | US6252325 Switched reluctance motor |
| 06/26/2001 | CA2204970C Microprocessor based motor control system with phase difference detection |
| 06/21/2001 | US20010004196 Brushless machine control |
| 06/20/2001 | EP1109309A2 Rotor position monitoring of a reluctance drive |
| 06/20/2001 | EP1109308A2 Brushless machine control |
| 06/20/2001 | EP1109307A2 Brushless machine control |
| 06/20/2001 | EP1108120A1 Device for controlling a regulator |
| 06/20/2001 | EP0836763B1 Switched reluctance electric machine system |
| 06/19/2001 | US6249103 Electric motor and driver system |
| 06/14/2001 | WO2001043270A2 Drive system for a set of machines |
| 06/13/2001 | EP1107448A2 Motor control device |
| 06/13/2001 | CN1067191C Electric motor controller and method |
| 06/12/2001 | US6246536 Notch filtering as used in a disc drive servo |
| 06/12/2001 | US6246207 Method and apparatus for controlling an induction motor |
| 06/12/2001 | US6246193 Encoderless rotor position detection method and apparatus |
| 06/07/2001 | WO2001041292A1 Method and apparatus for switching an ac machine between a drive and a power supply |
| 06/07/2001 | WO2001039588A1 High stability dynamic force reluctance motor |
| 06/07/2001 | US20010002784 Motor control device |
| 06/07/2001 | US20010002723 Motor driving device |
| 06/05/2001 | US6242882 Motor control apparatus |
| 06/05/2001 | US6242874 Phase commutation of a switched reluctance motor by single phase sensing of inductance |
| 05/31/2001 | DE19956768A1 Pumpe mit Vibrationssensor Pump with vibration sensor |
| 05/31/2001 | DE10056814A1 Motor-powered tool e.g. polishing tool, has working speed control circuit with speed setting device adjustable by user, position maintenance mechanism, and switch for fixed operating speed with at least two positions |
| 05/31/2001 | DE10021589A1 Device for positioning actuator, has control loop that receives input from sensor detecting current actuator position and that varies magnetic field to deflect actuator into desired position(s) |
| 05/30/2001 | EP1104088A2 Pump with vibration sensor |
| 05/30/2001 | CN1297280A Control of line harmonic |
| 05/30/2001 | CN1066589C Apparatus for sensing position of switched reluctance motor |
| 05/29/2001 | US6239567 Control device for brushless motor |
| 05/25/2001 | WO2001001393A3 Active damping of actuator bearing translational mode |
| 05/23/2001 | EP1101268A1 Method and circuits for controlling the power of an electronically switched, two-phase reluctance machine |
| 05/23/2001 | EP1100627A1 Apparatus and system for controlling the operating frequency of an electromagnetic vibratory feeder at a submultiple of the power line frequency |
| 05/23/2001 | CN1296333A Apparatus and method for controlling the supplied current and static capacitance to compressor |
| 05/23/2001 | CN1296095A 电动洗衣机 Electric washing machine |
| 05/17/2001 | WO2001035521A1 Device and method for controlling supply of current and static capacitance to compressor |
| 05/17/2001 | WO2001035520A1 Device and method for controlling supply of current and static capacitance to compressor |
| 05/16/2001 | EP1100190A2 Device and method for controlling the current supply and the static capacitance of a compressor |
| 05/16/2001 | EP1099043A1 Method for controlling an electromagnetic valve drive mechanism for a gas exchange valve in an internal combustion piston engine |
| 05/16/2001 | EP0868774B1 Electrical synchronous linear motor and method for determining the commutation offset of a linear drive with said electrical synchronous linear motor |
| 05/16/2001 | CN1065992C 负载控制装置 Load control means |
| 05/15/2001 | US6232741 Reluctance type motor apparatus and driving method capable of reducing ripples in motor output torque |
| 05/09/2001 | CN1294209A Device and method for shifting and controlling yarn winding arm of braider yarn feeder |
| 05/08/2001 | US6229234 Rotating electric motor system capable of vibrating and method for operating a rotating electric motor capable of vibrating |
| 05/02/2001 | EP1096660A2 Vibration type linear actuator and method of operating same |
| 05/02/2001 | EP1095891A2 Device and method for moving and controlling the weft winding arm in weft feeders for weaving looms |
| 05/02/2001 | CN1293832A Solid state motor starter with energy recovery |
| 05/02/2001 | CN1065376C Motor driving apparatus having back-gate-floating MOSFET for avoiding reverse current |
| 05/02/2001 | CN1065375C Harmonic current attenuation device for electric motor |
| 05/02/2001 | CN1065374C Harmonic current attenuation apparatus for electric motor |
| 04/25/2001 | CN1292511A Waveform controller for vibro-bench |
| 04/24/2001 | US6222285 Intelligent switch control circuit |
| 04/19/2001 | WO2001028083A1 Motor assembly with electronic switch, device powering said motor and electrical vacuum cleaner equipped with said assembly |
| 04/19/2001 | WO2001028082A1 Electric motor assembly without collector, device for powering said motor, and electric vacuum cleaner equipped with said assembly |
| 04/19/2001 | DE10042199A1 Chopper for switched reluctance motor, has controller that lowers chopping frequency of current when motor speed varies from preset value |
| 04/18/2001 | CN1064793C Circuit arrangement for powering two-phase asynchronous motor |
| 04/12/2001 | DE10045040A1 Geschaltete Reluktanzpositionsmessung Switched Reluktanzpositionsmessung |
| 04/11/2001 | CN1290997A Driving control circuit for fume exhauster motor |
| 04/10/2001 | US6215265 System and method for controlling activating actuator motors for various mechanisms, such as roller shutters, awnings and movies screens |
| 04/10/2001 | US6215262 Speed control method for switched reluctance motor (SRM) |
| 04/05/2001 | DE19945286A1 Controller for commutator motor for electric hand tools , divides direct voltage into first and second ranges with fixed sectional height in second range during operation of motor without changeover processes |
| 04/03/2001 | US6211633 Synchronous sampling circuit for a sensorless switching reluctance machine system |
| 03/29/2001 | DE10042338A1 Motor drive controller reduces current to motor coil according to temperature difference between upper temperature threshold and actual temperature of power switching element |
| 03/27/2001 | US6208497 System and method for servo control of nonlinear electromagnetic actuators |
| 03/27/2001 | US6208113 System for controlling the rotation of AC motors |
| 03/27/2001 | US6208108 Controller for reluctance type synchronous motor |
| 03/22/2001 | WO2001019316A2 A vibratory therapy apparatus |
| 03/21/2001 | CN1288285A Control system for linear vibration electric motor |
| 03/16/2001 | CA2319868A1 Switched reluctance position sensing |