Patents for H02P 5 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors (4,788)
02/1997
02/04/1997US5599215 Propeller drive system
01/1997
01/28/1997CA2070614C Reactive power control system
01/23/1997WO1997002650A1 Method and unit for controlling the synchronization of complex machines in case of electric power failure
01/22/1997EP0755049A1 Integrated circuit to drive an information storage disc
01/08/1997EP0752753A2 Power circuit for reluctance machines
01/08/1997CN1033777C Equipment for driving two motors
01/02/1997EP0692155B1 Synchronous motor system employing a non-synchronous motor for enhanced torque output
12/1996
12/27/1996EP0542831B1 Feeding of objects
12/19/1996DE19547465C1 Static converter arrangement with coupled voltage links e.g. for traction drives
12/12/1996DE19522933C1 Monitoring system for ring spinning machine with individual spindle drives
12/11/1996EP0747214A2 Method and device for controlling a multiple engine drive for a printing machine
11/1996
11/28/1996DE19542059A1 Linear drive slide positioning drive e.g. for workpiece processing control
11/20/1996EP0743383A1 Loom drive mechanism
11/13/1996CN1135541A Machine for production of cotton-wadded roll by using fiber stripe
10/1996
10/29/1996US5569992 DC shunt (or compound) motor and its related circuit with controllable dynamic characteristics
10/23/1996EP0739086A1 Method and device for driving synchronous motors
10/22/1996US5568131 Motor rotation judgement circuit and apparatus using such circuit for verifying that a motor is stopped
10/22/1996US5568026 Synchronizing windshield wipers
09/1996
09/25/1996EP0586624B1 Control system for an accumulating conveyor
09/18/1996CN2235680Y Arrangement for speed regulation and control for electric bicycle
09/17/1996US5557179 Control circuit for plural partially interlocked commutator type motors with oscillation damping characteristics
09/11/1996EP0731544A2 Method and device for monitoring at least two parallel operating motors
09/11/1996EP0521162B1 Apparatus for controlling electric car
09/11/1996EP0465657B1 Electromagnetic balance type scale having rapid response characteristics
08/1996
08/28/1996EP0729221A1 Speed control circuit for a dental drive motor
08/21/1996EP0727059A1 Drive and x-ray device comprising such a drive
08/21/1996EP0669996B1 Needling machine and needling method related thereto
08/01/1996DE19502909A1 Multi-motor drive for printing machine
07/1996
07/10/1996EP0720563A1 Ribbon sensing device for bag tyer
07/09/1996US5534758 Optical disk drive circuit and optical disk drive device using the same
06/1996
06/26/1996EP0718422A1 Machine for producing lap windings from fiber ribbons
06/25/1996US5530323 Drive synchronization system for plural motor systems
06/25/1996CA2026096C Induction motor switchable between series delta and parallel wye
06/25/1996CA2026095C Y-delta conversion switches on dual stator induction motor
06/19/1996EP0717488A2 Neutral connection for wire wound stator
06/19/1996EP0717331A1 Tandem control method using digital servo
06/18/1996US5528114 Apparatus for driving two motors
05/1996
05/28/1996US5521470 Plural commutator type motors with common parallel driving circuit
05/15/1996EP0711608A1 Screw decanter centrifuge
05/14/1996US5517091 Modular electrical system for device units
05/01/1996EP0604510B1 Recorder with drive phase detector
04/1996
04/24/1996EP0458974B1 Inverter-controlled apparatus for carrying and measuring articles
04/23/1996CA1338272C Window operator control
04/16/1996US5508571 Stator assembly for a dynamoelectric machine
04/03/1996EP0704962A1 Regulation of the relative synchronisation of mechanically coupled axes of machine tools
03/1996
03/28/1996DE4433581A1 Multi-drive system for mining and tunnelling conveyors
03/26/1996US5502544 Parameter based digital servo controller
03/20/1996EP0701662A1 Positive displacement machine with electronic motor synchronisation
03/20/1996CN1118951A Inverter apparatus
03/14/1996WO1996008075A1 Control for mechanically coupled driving and driven spindles in machine tools or the like
03/07/1996WO1996007128A1 Drive and x-ray device comprising such a drive
02/1996
02/28/1996EP0698769A1 Control method and apparatus for controlling the motors of an air conditioner
02/28/1996EP0698572A1 Method for the control of web velocities in a device for the transport or the drawing of a web material
02/13/1996US5491831 Cellular motor control network
02/07/1996CN1116373A Control system for a machine drive
02/07/1996CN1116291A Control method and apparatus for controlling motors of air conditioner
02/06/1996US5490056 Inverter apparatus having two control modes and apparatus using the same
02/01/1996WO1996002443A1 Overload detector for servo driven machines
02/01/1996CA2193987A1 Overload detector for servo driven machines
01/1996
01/24/1996EP0693822A1 Controller for electric motors
01/24/1996EP0693374A1 Electric driving device, particularly for printing machines
01/17/1996EP0692155A1 Synchronous motor system employing a non-synchronous motor for enhanced torque output
01/11/1996WO1996000934A1 Tandem control method using digital servo
01/10/1996EP0401375B1 Method of controlling synchronized operation of a machine tool
01/09/1996US5483134 Ribbon sensing device for bag tyer
01/03/1996CN2216722Y Controller for electromagnetic regulating speed motor
01/02/1996CA2060472C System for motor load equalization
12/1995
12/20/1995EP0687395A1 Process for preventing damage to numerically controlled machines in the event of a power failure
12/12/1995US5475292 Apparatus for restarting inverter for driving synchronous motor after momentary interruption
12/06/1995EP0526548B1 Plural motor fan system with improved speed control
12/06/1995CN1030487C 感应电动机 Induction motor
11/1995
11/29/1995EP0684534A1 Adaptive control systems
11/22/1995CN1112309A DC motor with rotating sensor
11/15/1995EP0682402A1 Output magnitudes rise limiting device for self-commutated constant voltage intermediate circuit converter
11/15/1995EP0682401A1 Limiting device for the output voltage slope of a self-commutated converter
10/1995
10/31/1995US5463556 Process and device for control of an autoleveling draw frame
10/18/1995EP0495987B1 Method and apparatus for controlling synchronized phases in system for driving printing rolls for corrugated board printing machine
10/11/1995EP0676095A1 POWER SUPPLY SYSTEM FOR n ASYNCHRONOUS MOTORS
10/11/1995EP0675822A1 Propeller drive system
10/11/1995CN1030024C Induetion motor
10/03/1995US5455496 Head-retract circuit for moving media storage apparatus
09/1995
09/26/1995US5452626 Process and device for the automatic adjustment of rotational speed ratios between operating elements of a draw frame
09/21/1995DE4422086C1 Electric food processor with interchangeable tools
09/19/1995US5451846 Low current compensation control for thyristor armature power supply
09/06/1995EP0669996A1 Needling machine and needling method related thereto.
08/1995
08/30/1995CN1107562A Control device for air conditioner
08/08/1995US5439184 Precision winding method and apparatus
07/1995
07/26/1995EP0664598A2 Power supply system
07/26/1995CN1105787A Linear motor and its electrical control system for magnetic field scanning physiotherapy machine
07/26/1995CN1105706A Method and equipment for a.c. motor driving oscillating aging treating parts
07/18/1995US5434486 Synchronous operation system
07/12/1995CN1104974A An electric powered bicycle
07/11/1995US5432418 Motor system for an electric type vehicle
07/04/1995US5430361 Integrated anti-backlash gearhead motor
06/1995
06/20/1995US5426353 Synchronous motor system employing a non-synchronous motor for enhanced torque output
06/14/1995EP0657988A2 Multiple pulse width modulation circuit
06/13/1995US5424763 Color misregistration-free color image forming apparatus
06/10/1995CA2137509A1 Multiple pulse width modulation circuit
06/06/1995US5422550 Control of multiple motors, including motorized pumping system and method
05/1995
05/31/1995CN1103228A Cellular motor control network
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