Patents for H02P 5 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors (4,788) |
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05/24/1995 | EP0241563B2 Speed control system |
05/11/1995 | DE4338339A1 Control device for at least two electric motors, in particular of roller drives |
05/09/1995 | US5413210 Controlling a feed of objects |
05/04/1995 | WO1995012242A1 POWER SUPPLY SYSTEM FOR n ASYNCHRONOUS MOTORS |
05/04/1995 | DE4411280A1 Circuit for an electric adjustment device and an electric load |
04/18/1995 | US5408164 Differential speed control of electric motors |
04/06/1995 | WO1995009104A1 Ribbon sensing device for bag tyer |
04/05/1995 | EP0646797A1 Circuit for judging motor rotation and apparatus for confirming motor stop using said circuit |
03/16/1995 | DE4330537A1 Frequenzumrichter und Verfahren zu seinem Betrieb Frequency and method for its operation |
03/15/1995 | CN1027878C Road train driven by electric motor |
03/09/1995 | WO1995006973A1 Power supply arrangement for a multiple electric motor line drive |
02/28/1995 | US5393201 Synchronous rotating apparatus for rotating a plurality of shafts |
02/14/1995 | US5389749 Elevator system |
01/24/1995 | US5384520 Balanced drive motors with cross-coupled excitation |
01/19/1995 | DE4420609A1 Controller for a machine drive |
01/19/1995 | DE4322744A1 Electrical drive system for adjusting one or more rotatable and/or pivotable functional parts in devices and machines, drive arrangement with an angular position transmitter and printing machine |
01/17/1995 | US5383066 Compensation for the dropout of a drum frequency generator signal in a drum servo system |
12/28/1994 | EP0631367A1 Integrated anti-backlash gearhead motor |
12/27/1994 | US5377094 Push-pull output stage for driving motors which generates auxiliary voltage supply |
12/22/1994 | WO1994029596A1 Positive displacement machine with electronic motor synchronisation |
12/20/1994 | US5374878 Modular electrical system for drive units |
12/13/1994 | US5373206 Position detection of rotors for switched reluctance motor |
12/13/1994 | US5373194 Reactive power control system |
12/07/1994 | CN1026937C System and method for controlling speed of electric motor in extremely low speed range using rotary pulse encoder |
12/06/1994 | US5371445 Switching device for controlling two electric motors at different speeds |
11/17/1994 | EP0624946A2 Cellular motor control network |
10/25/1994 | US5359154 Conveyor apparatus having plural conveyors with equalized conveying speeds controlled by an inverter means |
10/25/1994 | CA2041372C Apparatus for changing the frequency of motion of a pusher |
10/20/1994 | DE4312041A1 Electrical drive for combing machines |
10/13/1994 | WO1994023484A1 Synchronous motor system employing a non-synchronous motor for enhanced torque output |
10/13/1994 | WO1994023303A1 Circuit for judging motor rotation and apparatus for confirming motor stop using said circuit |
10/12/1994 | CN1093471A Ordinary differential equation computer and motor speed adjusting technique |
10/05/1994 | CN1026138C Method for controlling of tension of warp and loom with unit for tension of warp |
10/04/1994 | US5352965 Container crane driving control system |
09/29/1994 | WO1994022201A1 Electric power control system |
09/15/1994 | WO1994021030A1 Process for preventing damage to numerically controlled machines in the event of a power failure |
09/14/1994 | EP0615181A1 Method and device for automatically adjusting the speed ratios of a drafting machine |
09/06/1994 | US5345155 Control system for electric vehicle |
09/01/1994 | WO1994019865A1 Digital motor control system |
09/01/1994 | CA2118221A1 Digital motor control system |
08/31/1994 | CN1025810C Multi-electrical multi-speed automatic follow synchronism loop device |
08/10/1994 | EP0502875B1 Safety system for a stepper-motor drive |
08/03/1994 | EP0608769A2 Control device for air conditioner |
07/27/1994 | EP0607218A1 Vehicle with driving wheels driven by electric motors |
07/27/1994 | CN1090100A Method for driving of electric motor |
07/19/1994 | US5331539 Mailing machine including multiple channel pulse width modulated signal circuit |
07/12/1994 | US5329216 Multi-shaft driving apparatus and fluid rotary apparatus |
07/07/1994 | WO1994014649A1 Propeller drive system |
06/21/1994 | US5323096 Servomotor control device using servomotor rotation speed extrapolation |
06/14/1994 | US5321343 Digital motor control system |
06/14/1994 | CA2054051C Integrated motor drive and recharge system |
06/09/1994 | WO1994012715A1 Needling machine and needling method related thereto |
06/08/1994 | EP0600679A2 Apparatus including a multiple channel pulse width modulated signal circuit |
06/08/1994 | CN1087587A A motor system for an electric type vehicle |
06/02/1994 | CA2110330A1 Mailing machine including multiple channel pulse width modulated signal circuit |
06/01/1994 | EP0599608A2 Method and apparatus for driving motor |
05/25/1994 | CN2166559Y Computer field excitation regulator for powerless transducer |
05/18/1994 | CN1086939A Method for rotor magnetic potential holographic control and motor |
05/18/1994 | CN1086936A Damping flux linkage observation device for ac-ac frequency conversion synchronous motor damping flux linkage directive control |
05/11/1994 | EP0596170A1 Simultaneously operative multi-unit AC or DC series excitation motors or compound motors interlock driving circuit device |
05/11/1994 | DE4238760A1 Gear relaxation on stoppage - using counter control on reverse motion through belt drives to block relaxation or allow only controlled drift |
05/04/1994 | EP0595645A1 Container crane driving control system |
03/23/1994 | EP0587835A1 Frequency converter with buffer-circuit monitor |
03/09/1994 | CN1083637A Apparatus for restarting inverter for driving sync hronous motor after momentary interruption |
03/01/1994 | US5291410 Circuitry for synchronizing the speed of a plurality of engines by sequentially averaging phase difference with a reference phase representing a desired speed |
02/23/1994 | CN1082781A Differential parallel operation circuit for commutator type motor |
02/22/1994 | US5289100 System for powering, speed control, steering, and braking |
02/16/1994 | EP0583054A1 Commutator type motor differential parallel operating circuit with unbalance current circulatory choke function |
02/03/1994 | DE4325210A1 Re-starting device for sync drive motor inverter following short interruption - synchronises frequency and phase of motor terminal voltage and required inverter output voltage to provide re-starting command |
02/03/1994 | DE4225534A1 Electric motor operating and monitoring circuit for underground mining equipment - uses amplitude shifting keying data to modulate energy supply line with motor control data |
02/03/1994 | DE4224755A1 Separate spindle motor control - has a setting system for each motor with programs for start=up and brake operations |
01/27/1994 | DE4238968C1 Parallel control for lifting mechanism drives - has at least two lifting mechanism drives each with asynchronous motor with pole changeover winding of one of each motor as load winding |
01/13/1994 | DE4322991A1 Motor control installation - capable of stopping all motors, (and the rolls driven by these motors) at the same time |
01/12/1994 | EP0578567A1 Speed commutation device for two electric motors with different speeds |
01/05/1994 | EP0576947A1 Motor system of an electric vehicle |
01/05/1994 | DE4301367A1 Adjustable vibration drive with two unbalanced bodies e.g. for filter or conveyor - uses two AC drive motors coupled to two different AC systems, with different frequencies or phase, one of which is produced by semiconductor switch. |
01/02/1994 | CA2098884A1 Motor system for an electric type vehicle |
12/29/1993 | EP0576108A2 Drive concept for electrically driven rotary actuator |
12/22/1993 | EP0574693A2 Method and device for the signal analysis of a regulating stage |
12/22/1993 | EP0574573A1 Centrifuge with dual motor synchronous drive system |
12/15/1993 | CN1079441A Device for controlling of elevator |
12/14/1993 | US5270578 Method and system for controlling electric loads with high reliability |
11/30/1993 | US5266787 Laser scanner using two scan motors independently controlled by a single signal |
11/23/1993 | US5263413 Method and system for synchronously phase-controlling printing roll driving system for corrugated board printing press |
11/11/1993 | DE4235223C1 Operating and braking circuit for several AC motors coupled via load - has single brake switch connecting braking resistance bridged by free-running diode across DC voltage rail pair supplying all motors |
11/11/1993 | DE4215005A1 Spindle revolution electrical monitoring appts. for ring spinning frame - comprises spindles driven by separate electric motors attached to generator sending impulses on=line to analyser for indicating spindle stoppage faults |
11/03/1993 | EP0567781A2 Method and device for controlling electric motors |
10/20/1993 | CN1022497C Terry method and loom having pile-forming elements |
10/14/1993 | WO1993020613A1 Frequency converter with buffer-circuit monitor |
10/13/1993 | CN2143848Y Rotary speed controller for rotor moving speed regulating motor |
10/12/1993 | US5252900 Harmonization control system for plural shafts |
10/07/1993 | DE4211183A1 Umrichter mit Zwischenkreismonitor Inverter with DC Monitor |
10/05/1993 | US5249756 Apparatus for changing the frequency of motion of a pusher |
09/29/1993 | CN1022277C Variable speed controlled induction motor |
09/22/1993 | EP0561188A1 Procedure for the precision crosswinding of ribbon-like or yarn-like material |
09/21/1993 | US5247217 Safety system for a stepper-motor drive |
09/14/1993 | US5245257 Control system |
09/08/1993 | EP0558921A1 Synchronous rotating apparatus of plurality of shafts |
09/02/1993 | WO1993012999A3 Control system for an accumulating conveyor |
08/24/1993 | US5239247 Reconfigurable master-slave control |