| Patents for H02P 8 - Arrangements for controlling dynamo-electric motors rotating step by step (4,097) |
|---|
| 11/18/1999 | DE19908512A1 Steuereinrichtung für das Zuführen zerhackter elektrischer Leistung Control means for supplying electric power chopped |
| 11/17/1999 | EP0956640A2 Current regulated multiphase motor driver with a common current sense element |
| 11/17/1999 | CN2349722Y Step motor driving device with speed increasing/reducing control function |
| 11/16/1999 | US5984862 Device for controlling an amount of light of a lighting unit for an endoscope |
| 11/09/1999 | US5982134 Method and apparatus for driving a stepping motor |
| 11/09/1999 | US5982117 Method and apparatus for control of a switched reluctance motor |
| 11/02/1999 | US5977739 Stepping motor provided with a drive control integrated circuit having a prestored operating pattern |
| 10/28/1999 | DE19918851A1 Stepper motor control device for idling speed control valve in internal combustion engine |
| 10/27/1999 | EP0952318A2 Apparatus and method for driving a valve with a stepping motor |
| 10/26/1999 | US5973469 Motor driving apparatus |
| 10/05/1999 | US5963006 Useful in feeding of sheet in a facsimile device |
| 10/05/1999 | US5963005 Controller for a stepping motor |
| 10/05/1999 | US5963004 Stepper motor controller used in a document reading device |
| 09/29/1999 | EP0945975A1 Step motor or brushless dc motor |
| 09/28/1999 | US5959426 Circuit configuration for affecting the step frequency in the winding-current activation of stepping motor drives with chopped power output stages |
| 09/28/1999 | US5957109 Method and device for controlling an actuator element |
| 09/08/1999 | EP0940003A1 Direct current command generation for a stepper motor drive |
| 09/08/1999 | CN2337710Y Continuous manipulating needle electronic quartz clock motor |
| 08/31/1999 | US5945800 For controlling the rotating speed of a electromechanical device |
| 08/24/1999 | US5942872 Method of controlling a stepping motor |
| 08/18/1999 | EP0936511A2 Analog electronic watch |
| 08/17/1999 | US5939853 Method and apparatus for controlling a stepping motor, and a recording medium storing a program for carrying out the method |
| 08/11/1999 | EP0934624A1 Stepping motor control, and operating mode of such motors |
| 08/11/1999 | CN1225524A Method and device for controlling stepping electric motor |
| 08/11/1999 | CN1044655C High-precision fine stepping method and control system for step motor |
| 08/10/1999 | US5936371 Method and apparatus for controlling a servo motor using a stepper motor controller integrated circuit |
| 08/03/1999 | US5933344 Microprocessor having timer circuit generating complementary non-overlapped PWM signals |
| 08/03/1999 | US5932987 Variable step rate precision pumping apparatus |
| 07/29/1999 | WO1999038250A1 Stepping motor control device and optical head drive device |
| 07/29/1999 | WO1999027644A3 Current regulated multiphase motor driver with a common current sense element |
| 07/28/1999 | EP0932250A1 Electronic device |
| 07/27/1999 | US5929589 Stepping motor drive and a method of driving same |
| 07/20/1999 | US5926000 Apparatus for obtaining three-phase position detection signals by means of two coils |
| 07/07/1999 | CN1044053C Method of driving stepping motor |
| 06/29/1999 | US5915861 Method and apparatus for driving a stepping motor using digital pulse trains simulating sine and cosine waves |
| 06/24/1999 | WO1999018655A9 Direct current command generation for a stepper motor drive |
| 06/22/1999 | US5914580 Drive control device for a stepping motor |
| 06/22/1999 | US5914579 Direct current command generation for a stepper motor drive |
| 06/17/1999 | WO1999030411A1 Stepper motor controlling device and method, and printer and information recording medium employing the same |
| 06/03/1999 | WO1999027644A2 Current regulated multiphase motor driver with a common current sense element |
| 06/02/1999 | EP0919895A1 System and method for controlling a step motor |
| 05/27/1999 | DE19829808A1 Procedure for controlling induction air quantity for machine |
| 05/26/1999 | CN1043500C Stepping motor driving method |
| 05/25/1999 | US5906541 Method and apparatus for controlling a motor actuator under drive mode, and a recording medium storing a program for carrying out the method |
| 05/19/1999 | EP0916180A1 Sensorless step recognition process for stepping motors |
| 05/18/1999 | US5905353 Method and apparatus of driving stepping motor |
| 05/18/1999 | US5905351 Actuator controller using periodic signal |
| 05/11/1999 | US5903126 Control of stepper motor |
| 05/04/1999 | US5900711 Stepping motor driving apparatus |
| 04/28/1999 | EP0911176A1 A method for automatically controlling the printhead strobe time of a barcode printer |
| 04/28/1999 | EP0720563A4 Ribbon sensing device for bag tyer |
| 04/15/1999 | WO1999018655A1 Direct current command generation for a stepper motor drive |
| 04/13/1999 | US5894209 Apparatus for and method of controlling stepping motor |
| 04/01/1999 | DE19843924A1 Procedure for controlling motor |
| 03/30/1999 | US5889379 Stepper motor control system which uses pulse frequencies that vary according to a non-liner curve |
| 03/24/1999 | EP0744825B1 Motor driving device |
| 03/16/1999 | US5883776 Apparatus and method for improving response time of electromagnetic actuators |
| 03/16/1999 | US5883483 Inductance L load actuating apparatus |
| 03/03/1999 | EP0899865A2 Position determination device on a linear actuator using a stepping motor |
| 03/03/1999 | EP0898528A1 Device and method for controlling windscreen wipers |
| 03/02/1999 | US5877694 Indicating instrument and method of operation thereof |
| 03/02/1999 | US5877608 Current regulated multiphase motor driver with a common current sense element |
| 02/18/1999 | WO1999008375A1 Electronic device |
| 02/09/1999 | US5869776 Method and apparatus for receiving and displaying digital data |
| 02/04/1999 | DE19827570A1 Stepper motor driver e.g. for office machine |
| 02/03/1999 | EP0895343A1 Sharing of external components for the control of the switching dead-time of a plurality of integrated devices cooperating in driving and R-L multiphase actuator |
| 01/28/1999 | DE19725743C1 Method of controlling an electrical stepper motor |
| 01/20/1999 | EP0892492A1 Method and circuit to control a stepper motor |
| 01/13/1999 | EP0890217A1 System for detecting abutment and blocking in a stepped motor |
| 01/13/1999 | EP0890211A1 Process for detecting abutment and blocking in an electric motor |
| 01/13/1999 | EP0791241B1 Method and apparatus to maximize the top speed of brushless dc motors |
| 01/07/1999 | EP0889581A2 Apparatus and method for improving response time of electromagnetic actuators |
| 01/05/1999 | US5856735 Recording and reproduction apparatus |
| 12/30/1998 | EP0887919A2 Step motor controller |
| 12/22/1998 | US5852354 Multiplexing rate generator/counter circuit for controlling stepper motors |
| 12/08/1998 | US5847535 Active electronic damping for step motor |
| 12/08/1998 | US5847531 Process for reducing the strength of an uncontrolled pointer movement |
| 12/08/1998 | US5847475 Method of correction between electrical phase angle and mechanical output angle of stepper motor |
| 12/01/1998 | US5844394 Stepping motor controller |
| 12/01/1998 | US5844393 Method for controlling rotation of a stepper motor shaft |
| 11/26/1998 | WO1998037624A3 Direct drive with internal sensors and a control device |
| 11/26/1998 | DE19807085A1 Direct drive with internal displacement sensors |
| 11/25/1998 | EP0880224A2 Method and apparatus for driving a stepping motor |
| 11/24/1998 | US5841261 System for controlling stepping motor for dividing a single step of the motor into plural sections and applying voltages whose levels are determined in accordance with the sections |
| 11/18/1998 | EP0792537A4 Method and apparatus for control of a switched reluctance motor |
| 11/17/1998 | US5838132 Stepper-motor control method |
| 11/17/1998 | US5838128 Reconstruction of BEMF signals for synchronizing the driving of brushless- sensorless motors by means of predefined driving signals |
| 11/12/1998 | WO1998051002A1 Motor control apparatus |
| 11/10/1998 | US5834866 Motor structure |
| 10/28/1998 | EP0739501B1 Correction process between the electric phase angle and mechanical output angle of a step motor |
| 10/21/1998 | CN2295297Y Step-by-step motor controlled drive structure |
| 10/21/1998 | CN1196792A Device for driving stepping motor-type instrument |
| 10/20/1998 | US5825151 Apparatus for driving stepping motor |
| 10/14/1998 | EP0870359A1 Digital frequency generator |
| 10/14/1998 | CN1195924A Chip microprocessor accurately controlled stepping motor system |
| 10/14/1998 | CN1195923A Method for stopping starting and controlling step-by-step motor |
| 10/13/1998 | US5821721 Motor control system especially for control of an optical scanner |
| 10/07/1998 | CN1040155C Method for determination of parameter of digital voltage regular and controlling sub-connecting switch of transformer |
| 10/06/1998 | US5818193 Step motor driving method and apparatus for performing PWM control to change a step drive signal on-duty ratio |
| 09/30/1998 | EP0868017A1 Method and apparatus to maximise the top speed of brushless DC motors |