| Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487) |
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| 11/19/1987 | EP0245318A1 Circuit for producing a measurement signal for the frequency of an alternating current signal. |
| 11/04/1987 | EP0243625A2 DC motor speed control |
| 11/03/1987 | US4704570 For an a.c. induction motor |
| 10/27/1987 | US4703186 Hand-held scanner with a speed control device |
| 10/22/1987 | WO1987006403A1 Method and device for driving an asynchronous motor with speed control by means of a controlled inverter |
| 10/21/1987 | EP0241867A1 Acceleration/deceleration control apparatus using slip speed |
| 10/21/1987 | EP0241563A1 Speed control system |
| 10/21/1987 | CN87103189A Control arrangement for turning induction motor |
| 10/14/1987 | EP0241326A1 Method for controlling a PWM inverter associated with an n-phase motor, and apparatus for putting this method into operation |
| 10/14/1987 | EP0241045A1 Motion control apparatus for induction motor |
| 10/14/1987 | EP0240678A2 Rotational velocity control with pulse width modulation |
| 10/07/1987 | EP0239655A1 Electronic proportional-integral-controller in digital execution |
| 10/06/1987 | US4698649 Apparatus for controlling the velocity of a member in a digital printing system |
| 10/06/1987 | US4698577 Method of digital flux reconstruction with DC elimination |
| 09/29/1987 | US4697131 Voltage source inverter and variable frequency, constant voltage AC motor drive embodying the same |
| 09/24/1987 | WO1987005755A1 Device for detecting the rotational position of rotor of motor |
| 09/22/1987 | US4695941 Loss of electrical feedback detector |
| 09/22/1987 | US4695939 Three-phase exciter for synchronous machines |
| 09/22/1987 | US4695782 System for insuring rotational direction for an alternating current motor |
| 09/22/1987 | US4695778 Rotation phase control device |
| 09/17/1987 | DE3607670A1 Rotation speed controller for electric motor drives for tools |
| 09/16/1987 | EP0237317A2 Control system with improved robustness to disturbances |
| 09/16/1987 | EP0236826A2 Control method and control arrangement for a current converter drive with d.c. voltage intermediate circuit |
| 09/16/1987 | EP0236685A1 Method and device to control the number of revolutions of an electric motor operating in four quadrants |
| 09/15/1987 | US4694188 Apparatus for controlling a turbo generator |
| 09/15/1987 | CA1226922A1 Submerged scraper conveyor automatic speed control |
| 08/27/1987 | WO1987005167A1 Method of controlling servo motor |
| 08/25/1987 | US4689542 Method and apparatus for controlling induction motor |
| 08/19/1987 | EP0232547A2 Undersynchronous and oversynchronous current rectifier cascade and method for operating it |
| 08/12/1987 | EP0128182B1 Method and apparatus for automatically setting the demand phase lag input to an induction-motor power factor controller |
| 08/11/1987 | US4686437 Electromechanical energy conversion system |
| 07/28/1987 | US4683412 Current source inverter motor drive adapted for full current regenerative mode operation |
| 07/16/1987 | WO1987004276A1 Motor system |
| 07/14/1987 | US4680518 Servomotor velocity control method |
| 07/14/1987 | US4680516 Motor speed control system |
| 07/08/1987 | EP0227721A1 Method and device for reducing iron and copper losses in an induction motor |
| 07/08/1987 | EP0227719A1 Video recorder. |
| 07/07/1987 | US4678063 Apparatus for controlling an elevator |
| 07/01/1987 | EP0227052A1 Servo control apparatus |
| 07/01/1987 | EP0226878A1 Apparatus for controlling the velocity of a member in a digital printing system |
| 07/01/1987 | CN86107955A Control device for sewing machine |
| 06/30/1987 | US4677540 AC motor control panel |
| 06/16/1987 | US4673297 For imparting cyclical motion to articles |
| 06/16/1987 | US4673139 Textile machinery yarn supply apparatus |
| 06/16/1987 | CA1223067A1 Servo data driven motor speed control |
| 06/16/1987 | CA1223036A1 Synchronous machine with superconducting voltage and speed regulator |
| 06/16/1987 | CA1223033A1 Reversing device for a two-pole single-phase synchronous motor |
| 06/09/1987 | US4672286 Induction motor drive circuits |
| 06/04/1987 | WO1987003432A1 Speed control system |
| 06/03/1987 | CN86107916A Printer-driving motor and its control device |
| 06/02/1987 | US4670699 Capacity-movement model AC inductive motor switch-changeover capacity-type speed control circuit |
| 05/27/1987 | EP0223101A2 Control device for a separately excited d.c. drive motor and method for controlling a d.c. drive motor of a printing machine |
| 05/27/1987 | EP0223100A2 Control device for an electric printing machine drive motor |
| 05/26/1987 | US4668900 Digital servo apparatus |
| 05/21/1987 | WO1987003112A1 Circuit for producing a measurement signal for the frequency of an alternating current signal |
| 05/20/1987 | EP0222423A1 System for controlling the speed of an electric motor |
| 05/19/1987 | US4667264 Apparatus for controlling the starting of a three phase load with its normal phase sequence |
| 05/19/1987 | CA1222021A1 Method and apparatus for controlling pwm inverters |
| 05/12/1987 | US4665353 Microprocessor controlled D.C. motor for controlling tape feeding means |
| 05/06/1987 | EP0220502A2 Error signal generator |
| 05/05/1987 | US4662185 System of controlling refrigerator temperature |
| 05/05/1987 | CA1221400A1 Controlling system for a pole change electric motor |
| 04/28/1987 | US4661750 Device for controlling DC motor |
| 04/23/1987 | WO1987002485A1 Speed control system |
| 04/22/1987 | EP0219355A2 Control system with improved robustness to disturbances |
| 04/21/1987 | US4659975 Remote speed controller for a motor |
| 04/21/1987 | CA1220840A1 Electronic control for a domestic appliance |
| 04/14/1987 | US4658191 Motor rotation control apparatus |
| 04/14/1987 | CA1220511A1 Arrangement for controllably driving an a.c. motor |
| 04/01/1987 | EP0111567B1 Apparatus for processing regenerative energy of ac motor |
| 03/18/1987 | EP0126779B1 Ac motor control system |
| 03/11/1987 | EP0096073B1 Improved motor speed control system |
| 03/10/1987 | US4649330 Controlling device of a drill for regular and reversed rotation in non-contact type |
| 03/04/1987 | EP0212566A1 Phase locked loop motor controller |
| 03/04/1987 | EP0212417A1 Turbo-generator regulation device |
| 02/24/1987 | US4645048 Drive mechanism for machines |
| 02/24/1987 | US4644749 Phase locked looped controller for motordrivers |
| 02/17/1987 | US4644243 Static switches firing system |
| 02/17/1987 | US4644242 Controlling system for a pole change electric motor |
| 02/12/1987 | DE3528409A1 Method and device for monitoring the load state of a rotating mechanism which is driven by a field-oriented rotating-field machine |
| 02/10/1987 | US4642542 Velocity control systems |
| 02/03/1987 | US4641075 Method of and apparatus for controlling current of inverter |
| 01/28/1987 | CN86105608A Loss of electrical feedback detector |
| 01/27/1987 | US4639649 Motor control device |
| 01/27/1987 | US4639645 Drive system for A.C. motors |
| 01/27/1987 | CA1217260A1 Airflow control system |
| 01/21/1987 | EP0208967A1 Load-controlled power regulation device for an asynchronous motor |
| 01/21/1987 | EP0208859A1 Three-phase excitation for synchronons machines |
| 01/21/1987 | EP0208788A1 Speed control system for servo motors |
| 01/20/1987 | US4638225 Method and apparatus therefor in motor speed control |
| 01/20/1987 | US4637307 Automatic mechanical resonant frequency detector and driver for shuttle printer mechanism |
| 01/17/1987 | CN85100607A Method of stepless speed control of a.c. motor and the motors |
| 01/15/1987 | WO1987000364A1 Method and device for reducing iron and copper losses in an induction motor |
| 01/15/1987 | WO1987000336A1 Video recorder |
| 01/15/1987 | WO1987000335A1 Video recorder |
| 01/13/1987 | US4636696 Servo system |
| 01/08/1987 | DE3523529A1 Verfahren und vorrichtung zur verminderung der eisen- und kupferverluste eines induktionsmotors Method and device for rundown of iron and copper losses of an induction motor |
| 01/08/1987 | DE3522935A1 Videorecorder Video recorder |
| 01/08/1987 | DE3522934A1 Videorecorder Video recorder |
| 01/07/1987 | EP0207172A1 Drive control system for servo motors |