Patents for H02P 29 - Arrangements for regulating or controlling electric motors, appropriate for both ac- and dc-motors (5,779)
12/1993
12/15/1993EP0573658A1 Method of demagnetization prevention and control for electric motor
12/15/1993EP0347465B1 Method controlling servomotor
12/15/1993CN1079441A Device for controlling of elevator
12/01/1993EP0572161A2 AGC with non-linear gain for PLL circuits
11/1993
11/24/1993EP0571148A1 AGC circuit with non-linear gain for use in PLL circuit
11/16/1993US5263113 Method and apparatus for controlling the speed of a motor
10/1993
10/28/1993WO1993021686A1 Circuit arrangement for mitigating power switch capacitance
10/19/1993US5254921 Abnormality detecting method for a servo system
10/19/1993US5254915 Motor control device including an improved braking control arrangement
10/14/1993WO1993020608A1 Thermal protection for locomotive main traction alternators
10/14/1993WO1993019900A1 Vibration reduction control apparatus for robots
10/14/1993CA2109521A1 Thermal protection for locomotive main traction alternators
10/13/1993EP0564771A2 Drive control apparatus for electrical machine and parameter display method in drive control apparatus for electrical machine
10/13/1993EP0207168B1 Drive control system for servo motors
10/12/1993US5252907 Circuit arrangement for mitigating power switch capacitance
10/06/1993EP0314800B1 Device for controlling speed of servo motor
10/05/1993US5250888 Apparatus for and process of rotating a display
10/05/1993US5250885 Based on an encoding signal
09/1993
09/29/1993EP0562633A2 Motor servo system
09/22/1993EP0207172B1 Drive control system for servo motors
09/21/1993US5247217 Safety system for a stepper-motor drive
09/07/1993WO1993018568A1 Arrangement for the transfer of control commands in an apparatus or a machine operated from the mains
09/07/1993CA2109075A1 Arrangement for the transfer of control commands in an apparatus or a machine operated from the mains
08/1993
08/31/1993US5241345 Optical system-driving device
08/19/1993WO1993016423A1 Adaptive sliding mode control method for control object including spring system
08/17/1993US5237248 Control circuit having double-pole double-throw switching device for electrically powered tool
08/10/1993US5235682 Port output controller for use in microcomputer
08/05/1993WO1993015549A1 Servo control method
07/1993
07/27/1993US5231341 Limiter circuit of servo motor control apparatus
07/27/1993US5231340 Servomotor control method
07/20/1993US5229558 Control of an elevator hoisting motor during under voltage conditions in the main power source
07/15/1993DE4300365A1 Controller for servo system for robust operation of motor vehicle steering - has controller unit coupled into feedback path providing action independent of input command change.
07/08/1993WO1993013589A1 Method of demagnetization prevention and control for electric motor
07/06/1993US5225751 Power supply circuit for a motor
06/1993
06/22/1993US5221882 Motor servo apparatus
06/15/1993US5220266 Motor speed controlling device capable of correcting for speed detection error caused by change of duty ratio of photocoupler output pulses
06/09/1993EP0545419A1 Inverter unit and controlling method thereof
06/08/1993CA1318975C Automatic servo gain calibration system for a disk drive
05/1993
05/19/1993DE4137386A1 Circuit for contactless operating parameter changeover for electric tool - derives variable demand voltage from source by switching auxiliary resistance w.r.t. potential divider
05/18/1993CA1317998C Electromagnetic contactor with lightweight wide range current transducer
05/12/1993EP0541337A1 Electric motor driven hydraulic appartus with an integrated pump
05/12/1993EP0256141B1 Method of controlling servo motor
05/11/1993US5210562 Motor driving control apparatus with movement distance estimating function
05/11/1993US5210476 Servo motor monitoring unit
05/11/1993US5209661 Motor control desired dynamic load of a simulating system and method
05/05/1993CA2082038A1 Electric motor driven hydraulic apparatus with an integrated pump
04/1993
04/28/1993EP0538959A1 Circuit arrangement to control the rotating speed of a motor
04/28/1993EP0538483A1 Acceleration/deceleration time constant control system for servo motor
04/15/1993DE4129495C1 Adjusting short-circuit torque of electric servo motor - storing short circuit current required for desired torque in electronic motor controller after comparison with actual torque
04/06/1993US5200678 Motor driving control apparatus
03/1993
03/24/1993EP0533148A1 Limiter circuit of servo motor control apparatus
03/23/1993US5196790 Apparatus for detecting revolution counts of an electric motor or generator
03/23/1993CA1314963C Control apparatus for a compartment panel pull down mechanism
03/09/1993US5192902 Velocity/phase controller for dc servo motor
03/02/1993US5191272 Method of adjusting gain for motor control
02/1993
02/09/1993US5185563 Error detecting unit for a rotational detector
02/09/1993CA1313550C Electrically commutated, variable speed compressor control system
02/03/1993EP0526116A2 Servomotor control device
01/1993
01/26/1993US5181837 Electric motor driven inline hydraulic apparatus
01/20/1993EP0523667A2 Motor control device
12/1992
12/30/1992EP0300053B1 Method of controlling injection motor of injection molding machine
12/23/1992CN1067341A System and method for controlling speed of electric motor
12/15/1992US5172048 Device for measuring the number of revolutions of the shaft of a permanent magnet electric motor
12/15/1992US5172031 Hermetically sealed type electronic flash device
12/01/1992US5168220 Method and apparatus for measuring motor speed using a constant sampling time
11/1992
11/26/1992WO1992021074A1 Acceleration/deceleration time constant control system for servo motor
11/25/1992EP0462967B1 Chlorine-resistant semipermeable membranes
11/24/1992CA1310688C Operational method and control switching apparatus for monitoring the starting-cycle circuit of electric high-voltage motors with asynchronous start-up
11/24/1992CA1310450C Coated minerals for filling plastics
10/1992
10/28/1992EP0510723A1 Control system for a multiphase synchronous machine
10/21/1992EP0509724A1 Power transmission
10/19/1992CA2066023A1 Power transmission
09/1992
09/22/1992CA1307823C Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core
09/16/1992EP0504105A1 Electromotive drive system for intermittently working machines with angular displacement dependent variable torque
09/16/1992EP0502875A1 Safety system for a stepper-motor drive.
09/08/1992CA1307318C Helper drive apparatus for turbine drive system
09/02/1992EP0501437A2 Parameter setting apparatus for motor control unit
09/01/1992US5144210 Capstan servo device
08/1992
08/19/1992EP0498891A1 System for controlling servomotor
08/18/1992US5140245 Pmg-based position sensor and synchronous drive incorporating same
08/18/1992US5140238 Robot control apparatus
08/12/1992EP0201605B1 System for controlling the speed of a servo motor
08/11/1992US5136866 Non-slip rectilinear wiredrawing machine with synchronization between successive tangentially uncoiling capstans
07/1992
07/08/1992EP0493403A1 Process and device for imitating the speed in incremental measuring systems
07/01/1992EP0493322A1 Assembly for driving a motor for blinds and similar in both directions of rotation
07/01/1992CN1062438A Method and apparatus for controlling speed of motor
06/1992
06/23/1992US5124623 Speed control circuit for a servo motor
06/16/1992CA1303666C Servo system for a motor
06/03/1992EP0488350A2 Method of and device for driving and controlling a motor
05/1992
05/29/1992WO1992009016A1 Speed control device and predicting machine
05/27/1992EP0486870A2 Optical system-driving device
05/12/1992US5111784 Apparatus for reducing vibrations of the body of a vehicle
05/06/1992EP0484143A2 Capstan servo devices
05/06/1992EP0483894A1 Motor control system
05/06/1992EP0483773A1 Apparatus and method for controlling a load target in response to a force exerted thereon
05/06/1992CN1060937A Arrangement for acquiring energy
04/1992
04/30/1992CA2054327A1 Motor control loading system and method
04/22/1992EP0481495A2 Port output controller for use in microcomputer
04/08/1992CN1060149A Pmg-based position sensor and synchronous drive incorporation same
04/01/1992EP0478225A2 PMG-based position sensor and synchronous drive incorporating same
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