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| Number | Title | Issue Date |
| 7723933 | Vehicular generator-motor control apparatus A vehicular generator-motor control apparatus wherein a winding field type salient-pole generator-motor 1 (in FIG. 1) for a vehicle is subjected to a conduction control by a DC-AC converter 2, characterized in that a stator 1A of the vehi... | 05/25/2010 |
| 7278601 | Speed-adjustable life-saving apparatus Provided is speed-adjustable life-saving apparatus which comprises a housing, a drum disposed in the housing, a life rope and a resistance wheel hub motor. One end of the life rope is fastened and wound on the drum. The resistance wheel hub motor disposed in the dru... | 10/09/2007 |
| 7129669 | Motor controller, semiconductor integrated circuit, indicating instrument and method for controlling a motor A motor controller comprising, a detector configured to perform a difference processing for information relating to a counter electromotive force and an induced electromotive force generated by a stepping motor, and to generate a driving control signal based on a re... | 10/31/2006 |
| 7084590 | Booster and motor controller A voltage sensor (101) is connected to output terminals (P, N) of a booster. The voltage sensor (101) detects a boosted voltage, and outputs the detected voltage to a first drive controller (102). The first drive controller (102) outputs ... | 08/01/2006 |
| 6559611 | Method for starting a load by engine-driven generator and engine-driven generator At a starting of a motor which receives an electric power from a generator driven by an engine, an excitation current controller controls an excitation current so as to cause an output frequency of a generator to approach a predetermined frequency which i... | 05/06/2003 |
| 6433496 | Semiconductor integrated circuit for motor control A motor controlling semiconductor integrated circuit for controlling a motor by a PLL control is provided comprising output transistors for driving a motor, a position detecting means detecting a rotational position of a rotor in said motor, for generatin... | 08/13/2002 |
| 6429614 | Method and device for controlling an electronically commutated polyphase D.C. motor A device and method for driving a polyphase DC motor, in which a phase selector circuit, in each case, selects only one phase, which is fed to a commutation detection circuit. After each commutation detected by a commutation detection circuit, as a result... | 08/06/2002 |
| 6081084 | Sensorless power angle control for a vehicle alternator An alternator having a sensorless power angle control includes a three phase stator winding and three stator winding outputs connected to a controlled full wave rectifier bridge with a dc output. The controlled full wave rectifier bridge includes upper MO... | 06/27/2000 |
| 6051951 | Generator motor for internal combustion engine An alternator for an engine normally operated as a generator is caused to operate as a synchronous motor according to the operating condition of the engine. If power generation by the alternator 1 is no longer necessary because a battery 9 is fully charge... | 04/18/2000 |
| 6034492 | Motor-generator A D.C. motor-generator and an electric double layer capacitor are fixedly connected directly to each other and a rotary shaft of the motor-generator is rotated in one direction by an external force to generate D.C. electric energy which is stored in the e... | 03/07/2000 |
| 6023135 | Turbogenerator/motor control system A turbogenerator/motor control system having a plurality of proportional integral control loops including a fuel command control loop and a current command control loop. The exhaust gas temperature of the gas turbine of the turbogenerator/motor is maintai... | 02/08/2000 |
| 5998944 | Method and apparatus for controlling a lifting magnet of a materials handling machine An apparatus and method for controlling a lifting magnet (12) of a materials handling machine (10) to eliminate arcing between contacts (70-80) within the magnet controller (26) as is well as is large voltage spikes. The controller (26) selectively excite... | 12/07/1999 |
| 5977730 | Method and apparatus for controlling the flow of hydraulic fluid A hydraulic circuit (124) is defined in a manifold (130) which may be aluminum, steel, or any other suitable material. The circuit (124) regulates the flow of hydraulic fluid to the hydraulic motor (120) and thus ensures that the motor rotates at an essen... | 11/02/1999 |
| 5959416 | Method and apparatus for controlling a lifting magnet of a materials handling machine An apparatus and method for controlling a lifting magnet (12) of a materials handling machine (10) to eliminate arcing between contacts (70-80) within the magnet controller (26) as well as large voltage spikes. The controller (26) selectively excites the ... | 09/28/1999 |
| 5903116 | Turbogenerator/motor controller A turbogenerator/motor controller with a microprocessor based inverter having multiple modes of operation. To start the turbine, the inverter connects to and supplies fixed current, variable voltage, variable frequency, AC power to the permanent magnet tu... | 05/11/1999 |
| 5844384 | Electronic charger-starter for vehicles A control circuit of the current to the secondary and a control circuit of the voltage to the secondary are such that the current for charging the battery and the current for starting will each have a defined maximum value, and such that the voltage at th... | 12/01/1998 |
| 5648705 | Motor vehicle alternator and methods of operation A conventional full wave diode bridge of an alternator is replaced with a full wave controlled rectifier bridge having controlled switches in place of diodes. Phase control is performed by the switches of the controlled rectifier bridge to preempt natural... | 07/15/1997 |
| 5619108 | Vehicle alternating-current generator control device and vehicle alternating-current generator A vehicle alternating-current generator control device having a single in-line molded package type control component with its leads arranged on one side. Disposed on the control component is an extension adapter with its ends connected to the leads of the... | 04/08/1997 |
| 5189355 | Interactive rotary controller system with tactile feedback An apparatus for controlling conditions in response to an operator input, the apparatus including a rotary knob coupled to the shaft of the rotor of a stepper motor having first and second stator windings, in quadrature, with each winding being center tap... | 02/23/1993 |
| 5030898 | Variable voltage limit control for an electric propulsion system Method and apparatus for optimizing power delivered by a prime mover-driven electric power alternator to an adjustable speed electric traction motor during high speed operation. The alternator is suitably controlled to deliver constant power if its output... | 07/09/1991 |
