Matches 1 - 50 out of 101 1 2 3 >
Match Document Document Title
7619385 Motor controller, washing machine, air conditioner and electric oil pump  
A motor controller capable of suppressing a large speed change generated at the time of changeover from a synchronous operation mode to a position feedback operation mode and implementing even...
7596304 Starting device and method for eliminating a peak current  
Disclosed is a starting device and method for eliminating a peak current introduced when an inductive circuit such as a motor or a direct-current (DC) motor is actuated, The starting device...
7579804 Method to measure the angular speed of an induction motor  
The invention relates to a method for determining the electric angular speed of a rotor of an induction motor, wherein electric power supplied to phases of a stator of the induction motor affects...
7570009 Fan system and its control device and control method  
A control device of a fan system, which has at least one fan, receives a starting voltage. The control device includes a start controlling unit and a driving unit. The start controlling unit...
7525278 Voltage conversion apparatus, power output apparatus, and control method of voltage converter  
An upper limit value setting unit of a control device conducts integration on the change in battery power, and determines whether the integrated value is lower than a preset first threshold value...
7498763 Apparatus and method for reducing the current drawn during starting of a single-phase AC asynchronous motor  
Current consumption during the starting process of a single-phase a.c. asynchronous motor is reduced by an apparatus including a thermistor which can be mounted in series with the main winding of...
7471058 Starting device and starting method for a single-phase induction motor  
A starting device and starting method for a single-phase induction motor, housing: a stator having a running coil and a starting coil; a running switch and a starting switch which is conducted to...
7417389 Speed control for an electric motor  
A system and method for controlling a rotational speed associated with a shaft or rotor of an electric motor comprises establishing a target rotational speed associated with a shaft or rotor of an...
7345449 Method of rotating a polyphase motor at less than rated speed  
A polyphase AC induction motor is connected to a power supply through a soft starter having three sets of inverse parallel connected silicon controlled rectifiers with each set corresponding to one...
7291995 Air fan rotation speed control method and structure thereof  
An air fan rotation speed control method and a structure thereof aim to provide an automatic control mode and a manual control mode at the same time to control rotation speed regulation of an air...
7265506 Noise improved linear DC motor control systems and methods  
A linear power controller and related circuitry may be implemented to provide linear control of a variable DC electric motor. The controller and motor are coupled to form a closed loop for...
7218075 Electronic circuit for starting a single phase induction motor  
An electronic circuit for starting a single phase induction motor, of the type containing a rotor and a stator with at least one running coil (B 1 ) and one starting coil (B 2 ), for operating...
7141948 Electromotive power steering system  
An objective is to provide, in a motor controller used for an electromotive power steering system, a concrete realistic method for easily performing abnormality judgments in its control system. The...
7138772 Electrically movable vehicle and control program for driving electrically movable vehicle  
The invention provides an electrically movable vehicle drivable by a simplified mode of control and a control program for driving the vehicle. A normalized value Y′ representing translation...
7091691 Variable speed motor  
An outer-rotor variable-speed motor, to which single-phase AC power is applied and on which a rotor is provided outside a stator, comprises first and second main windings provided on a stator of...
7075260 Motor controlling method and apparatus thereof  
A voltage detection section and current detection section detect a voltage and current supplied to a motor, and the detected voltage and current are supplied to a position detection section. An...
7068009 Drive arrangement, especially for a lifting mechanism and/or a traveling drive  
The invention concerns a drive arrangement of a lifting gear and/or a traveling gear, with a pole-reversible rotary-current motor with windings for at least two different actuating speeds, with a...
7047770 Washing machine agitation action control  
An apparatus, method and system of wash action control for an automatic washing machine. A manually operable user interface allows selection from between a plurality of discrete agitation speed...
7026785 Motor controller  
A system and method for controlling an electric motor is disclosed. The method comprises determining the operating load of the electric motor and then calculating the voltage to be applied to the...
7023169 Method for changing speed of motor group  
A method for changing the speed of a motor group, in particular for starting or stopping it, the motor group comprising a plurality of squirrel-cage induction motors or synchronous motors and...
6946815 Switch for a variable-speed induction motor  
A switch for a variable-speed induction motor includes conductive connecting pieces, a rotary member, and a driving unit. The connecting pieces are mounted in a housing, are adapted to be connected...
6831431 Method for regulating the rotational speed of a motor and a motor for carrying out a method of this type  
The invention concerns a method for regulating the rotation speed, of a motor with which a digital rotation speed controller is associated and which, during operation, furnishes an actual-value...
6815926 Single phase induction motor with partially shared windings  
A single phase, three-speed induction motor having 4, 6, and 8-pole speed configurations. In one embodiment, the motor is constructed and arranged to be used in connection with a washing machine....
6806677 Automatic control switch for an electric motor  
A simple and economical mechanism providing automatic motor control. The mechanism includes a motor-rated relay directly connected to line voltage and the input terminal of a motor winding, and...
6737828 Washing machine motor drive device  
A washing machine motor drive device drives a motor using an inverter circuit, which implements a constant torque control through a change in the torque-revolution speed characteristic of the...
6713986 Controller for air conditioners and heat pumps  
A speed controller for a single phase motor such as a permanent split capacitor motor allows the motor to be operated at a first speed, n 1 , and a lower speed, n 2 . High speed motor operation is...
6680997 System and method for enabling a high torque/high speed brushless DC motor  
A high torque/high speed brushless DC motor system for controlling both the speed and torque of the motor including a rotor and a stator, the stator of the motor including a first, second and third...
6597140 Sensorless motor starting system  
A sensorless motor starting system of a simplified structure is capable of starting a sensorless spindle motor under optimal target starting conditions with low power consumption in accordance with...
6586905 Automatic sensing of bypassing of soft starter or controller  
A motor controller controls a motor operated by an AC line voltage. The controller includes an SCR connectable between an AC line and a motor terminal for controlling application of AC line voltage...
6501244 Method and apparatus for controlling a high-speed AC permanent magnet synchronous motor coupled to an industrial turbo engine  
A method and apparatus for controlling a permanent magnet synchronous motor ( 8 ) coupled to a turbo engine such that transient current and steady state current are minimized. The method comprises...
6481974 Fan motor with constant speed control by a microprocessor system  
A fan motor with constant speed control comprises a microprocessor system, a bus control logic, a register for actual fan speed, a register for fan state, a register for speed set-up, a linear...
6420848 Method and controlling the starting of an AC induction motor with closed loop current control  
A method is provided for controlling a three-phase, AC induction motor. Each phase of the AC induction motor is connected to an AC input source by a thyristor switch and a bypass contactor...
6369544 Furnace and air conditioner blower motor speed control  
A supplemental circuit board is provided for a furnace and air conditioning system to power the blower motor so that there is normal heat speed during a heat cycle, and normal, full speed when...
6346790 Induction motor system with an induction motor and an electrically isolated voltage modulation motor controller  
An induction motor system operable in a wet environment comprises an induction motor and an apparatus for controlling the speed of the motor. The motor is adapted to be coupled to an AC source for...
6288510 Drive controller for motor-driven high-speed rotating body and method for discriminating type of machine used therefor  
An objective of this invention is to provide a drive control device to control the drive applied to a high-speed rotor unit which would have no circuits in either its pump unit A or its power...
6175208 High efficiency permanent split capacitor motor for driving a compressor  
A permanent split capacitor motor operable in a full mode and in a modulated mode for improving efficiency. The motor includes a stator and a rotor in rotational relationship with the stator. The...
6141401 Drive device for a rotary anode of an X-ray tube, and method of controlling the drive device  
The invention relates to a drive device for a rotary anode of an X-ray tube, including an induction motor (13) whereto an alternating voltage can be applied by means of an inverter (20), and also...
6040666 Machine tool control system and machine tool control method, and detection system and detection method therefor  
A machine tool has a spindle with a tooling body mounted thereon, a detector for detecting an acceleration time for the tooling body to reach from a rotation start to a predetermined rpm, a...
6025682 Infinitely variable wash action  
A wash action control system is used to control the agitation speed of a washing machine. The invention includes a wash speed selection switch which controls the agitation speed of the agitator....
5894209 Apparatus for and method of controlling stepping motor  
An apparatus for controlling a stepping motor used for moving a carriage having a pickup from a first position to a second position, the apparatus having: a calculating device for calculating a...
5886497 Control arrangement for escalator or moving walk  
A safety control arrangement for escalators includes a detector for generating a trigger signal, and a microprocessor connected to a memory. A serial data communications bus connects the detector...
5883488 Method and apparatus for multispeed hybrid start switch for a motor  
A multi-speed switching device particularly suitable for providing multi-speed starts for a motor, especially a two-speed motor, is provided with a high-reliability solid state switch for...
5883487 Method and apparatus for determining the speed of rotation of an AC motor  
A speed control apparatus for determining and controlling the speed of rotation of a rotor in an AC motor. The motor includes a stator having main and auxiliary windings. Main and auxiliary winding...
5828199 Variable speed controller for an induction motor  
A variable speed controller for an induction motor that estimates the primary angular frequency and the speed without causing any error in the drive region where the induced voltage is low. The...
5760562 Apparatus and method for generating digital position signals for a rotatable shaft  
An apparatus and method for generating digital electrical signals which are representative of the angular position and rotational velocity of a rotatable shaft component in a servomechanism...
5734248 Current modulation motor controller  
An apparatus for controlling the speed of an induction motor includes a first winding and a second winding. The first winding and second winding are adapted to be coupled to an AC source for...
5689168 Control circuit for two speed motors  
A control circuit for a two speed electric motor includes high and low speed electronic switches. The high speed electronic switch is biased off when the low speed electronic switch is biased on....
5682334 Motor start acceleration profile  
A start-up controller is programmed to continuously monitor the start-up acceleration of a motor using a stored acceleration profile to check the acceleration time against specification limits for...
5500581 High-efficiency power supply control apparatus for variable-speed induction motor  
An apparatus for controlling the supply of power to a variable-speed induction motor converts an AC power source voltage to a motor supply voltage at a designated frequency, with the amplitude of...
5481641 Motor control apparatus  
A control apparatus for controlling a motor includes: a command unit for generating a command signal including a running command signal and a stopping command signal; a rotation sensor for...
Matches 1 - 50 out of 101 1 2 3 >