Patents for H02P 29 - Arrangements for regulating or controlling electric motors, appropriate for both ac- and dc-motors (5,779)
07/1995
07/26/1995EP0357778B1 Method of speed control for servomotor
07/25/1995US5435729 Motor control loading system
07/11/1995US5432422 Method and apparatus for controlling the positioning and reducing vibration in a machine tool system
07/11/1995US5431502 Carriage motor controller for printer
07/06/1995DE4418118C1 Servo steering control for automobile
07/05/1995EP0661231A1 Apparatus for adjusting brake force for passenger conveyor emergency brake
07/05/1995EP0660972A1 Process and device for electronically monitoring the overload on electric motor drives.
06/1995
06/29/1995WO1995017780A1 Method and apparatus for transducerless flux, position and velocity estimation in drives for ac machines
06/27/1995US5428285 Position controller for controlling an electric motor
06/21/1995EP0658970A1 Motor vibration control device and method for matching a motor speed detected value with a motor speed reference value
06/21/1995EP0658289A1 Process and device for driving a multiplicity of loads
05/1995
05/30/1995US5420490 Apparatus and method for compensating for warm-up drift in a servo motor
05/23/1995US5418440 Position control device for servomotor
05/17/1995EP0653832A2 Method and device for controlling speed of a washing machine motor
05/11/1995DE4412413C1 Device for optimisation of the rotation speed control behaviour of a miniature electric motor for dentistry purposes
05/10/1995EP0652499A1 Motorised setting device for machines
04/1995
04/26/1995EP0650253A1 Speed control observer applied to speed control system for motor
04/25/1995US5410582 Reference-signal generating apparatus
04/25/1995US5410234 Motor drive control apparatus
04/13/1995WO1995010135A1 Electric motor with torque detecting means
04/06/1995WO1995009479A1 Robot control apparatus for monitoring robot load
04/04/1995US5404418 Closed-loop feedback control system having an adaptive filter
03/1995
03/22/1995EP0644648A1 Control method and apparatus and malefunction detection method and apparatus for AC motor
03/21/1995US5399959 Circuit arrangement for contactless switchover of operation parameters of an electrically driven tool
03/16/1995WO1995007572A1 Device for operating a power consumer in a vehicle
03/16/1995DE4330537A1 Frequenzumrichter und Verfahren zu seinem Betrieb Frequency and method for its operation
03/07/1995US5396413 Method of controlling amenity products or rotating machines
02/1995
02/23/1995WO1995005703A1 Apparatus and method for controlling a servomotor
02/22/1995EP0639888A1 Method of detecting and regulating load on servomotor
02/21/1995US5392378 Speed controlling system and a predictor
02/21/1995US5391969 Motor servo system
02/14/1995US5389868 Drive control apparatus for driven machine and parameter display method in drive control apparatus for driven machine
01/1995
01/17/1995US5383066 Compensation for the dropout of a drum frequency generator signal in a drum servo system
12/1994
12/07/1994CN1026937C System and method for controlling speed of electric motor in extremely low speed range using rotary pulse encoder
12/07/1994CN1026936C Method and apparatus for controlling the speed of a motor
12/06/1994US5371452 Adjustable time constant control and method system for a servomotor
11/1994
11/30/1994EP0626752A2 A method of controlling a printhead carriage velocity or a serial printer
11/29/1994US5369349 Electric motor control system
11/24/1994WO1994027360A1 Method for controlling current for synchronous motor
11/22/1994US5367241 Rotation speed detecting apparatus for a motor having an encoder
11/10/1994WO1994025910A1 Method for controlling servomotor
11/08/1994US5363359 Method and apparatus for generating velocity error signals
10/1994
10/27/1994WO1994024621A1 Method of force control by disturbance load estimation
10/26/1994EP0396749B1 System for controlling servo motor
10/12/1994CN1093507A Method and apparatus for controlling single phase induction motor
10/04/1994US5353174 Motor speed sensing system for magnetic disk apparatus or the like
09/1994
09/29/1994DE4410062A1 Drive control device and method for controlling a driven device
09/21/1994EP0616417A1 Method for control of ac motor
09/14/1994EP0615339A1 Digital servo system
09/13/1994US5347214 Method and device for setting the short circuit moment in electric motors, particularly in servomotors
08/1994
08/30/1994US5343134 Method for checking brake torque
08/24/1994EP0292573B1 Speed controller
08/18/1994WO1994018751A1 Method of detecting and regulating load on servomotor
08/16/1994US5337878 Assembly and method for adjusting brake force for passenger conveyor emergency brake
08/10/1994EP0502875B1 Safety system for a stepper-motor drive
08/03/1994EP0608830A1 Motor control device
07/1994
07/26/1994US5332956 Motor rotation controlling device
07/19/1994US5331267 Method for determining motor speed of an induction motor for a hoist
07/12/1994US5329560 AGC circuit with non-linear gain for use in PLL circuit
06/1994
06/21/1994US5323436 Apparatus of and method for counting a number of revolutions of a servo motor
06/21/1994US5323287 Protective device for electric motors
06/21/1994US5323096 Servomotor control device using servomotor rotation speed extrapolation
06/15/1994EP0601432A2 Method and system for estimating inertia of 2-mass system during speed control
06/15/1994CN1025065C Operation control circuit for pump motor
06/14/1994US5321643 Digital comb filter
06/14/1994US5320501 Electric motor driven hydraulic apparatus with an integrated pump
06/01/1994EP0599020A1 Method and apparatus for controlling the positioning and reducing vibration in a machine tool system
05/1994
05/04/1994CN1024428C Operation control circuit for pump motor
05/03/1994US5308965 Display device for an industrial console module
05/03/1994CA1329258C Servo for a rotary head drum of vtr
04/1994
04/26/1994US5306993 System of driving by electric motor machines which work in a periodic manner at torque variable as a function of the angle of rotation
04/26/1994US5306990 Electric motor control apparatus including an output stage protected against malfunction and damage
04/19/1994US5304908 Quantizing error removing circuit for a rotational control device
04/19/1994US5304905 Motor servo-system controller having comparison of detected current with model current integrations
04/14/1994WO1994008389A1 Method for control of ac motor
04/13/1994EP0591482A1 Arrangement for the transfer of control commands in an apparatus or a machine operated from the mains.
04/12/1994US5303278 Circuit for compensating waveform shaping error
04/05/1994US5301131 Apparatus and method for controlling the rotational speed of a motor
03/1994
03/31/1994WO1994007289A1 Process and device for electronically monitoring the overload on electric motor drives
03/31/1994DE4333146A1 Regulating speed of electric motor - using sensitivity function and complementary sensitivity function each multiplied by frequency weighting function
03/29/1994US5298842 Thermal protection for locomotive main traction alternators
03/23/1994EP0588005A1 Pilot light interface for small industrial controls
03/22/1994US5296789 Apparatus for controlling brushless motors in response to switching transistor temperature
03/22/1994CA1328006C Cyclic electromechanical program control for controlling elements, such as for example openable roofs of vehicles
03/17/1994WO1994006203A1 Servo waveform display system
03/17/1994WO1994006188A1 Temperature monitoring process and device
03/17/1994DE4230873A1 Verfahren und Vorrichtung zur elektronischen Überlastüberwachung an elektromotorischen Antrieben Method and apparatus for electronic overload monitoring of electric motor drives
03/15/1994US5294871 Electric motor control system
03/10/1994DE4229344A1 Verfahren und Vorrichtung zur Temperaturüberwachung Method and apparatus for temperature monitoring
03/09/1994EP0585581A2 Carriage motor controller for printer
03/08/1994US5293445 AGC with non-linear gain for PLL circuits
03/02/1994EP0292575B1 Servo motor controller
03/02/1994EP0292574B1 Numerical controller
02/1994
02/23/1994EP0583476A1 Adaptive sliding mode control method for control object including spring system
02/22/1994US5289517 Digital pulse processing device
01/1994
01/19/1994EP0379573B1 Resistance compensation in a motor using a thermally variable resistive network
01/12/1994EP0578475A2 Motor control apparatus
01/12/1994EP0577839A1 Servo control method
12/1993
12/22/1993EP0407590B1 Servo control apparatus
12/21/1993US5272423 Velocity control method for a synchronous AC servo motor
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