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9018872 Motor control circuit  
To provide a motor control circuit that variably controls the speed of a motor, in which an appropriate advance angle value corresponding to the speed of the motor that is set can be automatically...
8994319 Electric motor and electrical apparatus equipped with same  
An electric motor includes a magnet rotor which is placed with an air gap interposed between it and a stator and has a magnetic pole portion formed from a plastic magnet which swells by hydrogen...
8981702 Automated motor control  
Input-output linearization (IOL) and extended state observer (ESO) techniques are applied to a Field Oriented Control (FOC) for Permanent Magnet Synchronous Motors (PMSM). In one such approach, at...
8975843 Motor control device  
A motor control device includes a control condition storage unit storing at least one of a control condition defined by an equivalent voltage supplied to a three-phase motor and a control...
8970156 Path display apparatus considering correction data  
A path display apparatus includes a first position command acquiring unit that acquires first position command for motors, a first position feedback acquiring unit that acquires first position...
RE45388 Compact FPGA-based digital motor controller  
A compact field programmable gate array (FPGA)-based digital motor controller (102), a method, and a design structure are provided. The compact FPGA-based digital motor controller (102) includes a...
8963460 Method and system for controlling motor  
A method for controlling a motor is provided. The method comprises obtaining electrical signals of the motor with a signal unit, the electrical signals comprising a motor torque and an angular...
8957615 Motor driving apparatus  
There is provided a motor driving apparatus capable of optimizing driving efficiency by adjusting a phase difference between current applied to a motor and voltage detected from the motor and...
8957617 Controller and method for improving motor driving efficiency  
The present invention discloses a controller and a method for improving motor driving efficiency. According to the present invention, multiple control parameters are inputted to the controller so...
8941346 Switching frequency modulation utilizing rotor position  
A control system (128) for controlling a switched reluctance (SR) machine (110) having a rotor (116) and a stator (118) is provided. The control system (128) may include a converter circuit (122)...
8941349 Motor drive circuit  
A motor drive circuit includes: an advance angle setting correcting device having a correction reference cycle according to a reference advance angle count value, in which a correction amount is...
8937450 Motor driving system and motor system  
A motor driving system including command value output means configured to output an analog value according to a rotation speed command; a first power line having first switching means; a drive...
8922155 Monitoring motor condition  
In various implementations, a condition of a motor may be monitored based at least partially on time required to achieve a change in speed. A notification may be transmitted based on the condition...
8922144 Method of processing sensor signals for determining motion of a motor shaft  
Methods and systems of processing sensor signals to determine motion of a motor shaft are disclosed. This disclosure relates to the processing of sequences of pulses from a sensor for computing...
8917041 Phase-shift detection device, motor drive device, brushless motor, and phase-shift detection method  
A phase-shift detection circuit detects a phase shift in motor driving, using pulse-shaped position detection signal Rd and measurement signal Ms. The position detection signal is based on sensor...
8896258 Method and device for starting an electric motor  
A method for starting an electric motor having a rotor, comprising the following steps:—driving the rotor with a first torque in a first rotational direction, wherein a maximum value of the first...
8866433 Switched reluctance initial rotor position estimation  
A method of estimating an initial rotor position of a switched reluctance (SR) machine having a rotor and a stator is provided. The method may comprise the steps of driving a phase current in each...
8866423 PMSM field weakening for appliance motors  
An electric motor in an appliance and a method of controlling the motor to achieve speeds greater than a base speed of the motor is provided. To achieve speeds above the base speed of the motor,...
8847541 Control method and control device of motor inverter  
A motor inverter is provided with switching elements for each phase of a 3-phase motor, and driving the motor by turning on and off the switching elements. In an example of a control device of the...
8836262 Method and arrangement for determining the dynamic state of an electric motor  
In a method for the determination of a current initial rotational position of a rotor and in an arrangement for carrying out same, an incremental position encoder outputs an output signal. The...
8836268 Position sensing device, rotational actuator having the same, shift-by-wire system having the rotational actuator, and method for detecting position of movable member  
A pulse signal output unit sends three-phase pulse signals according to movement of the movable member. A counter unit adds a first predetermined value or a second predetermined value to a count...
8836255 Control device  
A control device that controls an electric motor drive device including a DC/AC conversion section that converts a DC voltage into an AC voltage using a detected angle detected by a resolver...
8836261 Detection control system  
A detection control system includes a sensing unit, a control module and a driving module for a motor including a rotor and a stator. The sensing unit electrically connects the motor to sense a...
8823314 Energy saving system and method for devices with rotating or reciprocating masses  
A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop...
8803454 Sensorless optimum torque control for high efficiency ironless permanent magnet machine  
Embodiments of the present invention permit the optimization of torque control of a permanent magnet machine including obtaining instantaneous terminal voltages of the machine, transforming the...
8796979 Apparatus for driving brushless DC motor  
Disclosed is an apparatus for driving a BLDC motor, the apparatus including: a BLDC motor having a single sensing coil therein; a position/speed calculation unit for calculating a current position...
8779712 Motor control device  
A motor control device including: a following control unit that calculates a pre-correction torque command based on a difference between an operation command signal for commanding an operation of...
8773052 Control of a brushless motor  
A method of controlling a brushless motor that includes exciting a winding of the motor in advance of predetermined rotor positions by an advance period. The length of the advance period is...
8773051 Power converter  
A synchronization detection PLL section generates an ON synchronized signal formed as a result of synchronization control based on a diode ON synthesized signal. The synchronization detection PLL...
8766574 Method and control device for operating a three-phase brushless direct current motor  
A method and a control device operate a three-phase brushless direct current motor with phase windings that are fed by an inverter connected to a voltage source having a high potential and a low...
8742707 Control of a brushless motor  
A method of controlling a brushless motor that includes rectifying an alternating voltage to provide a rectified voltage, and exciting a winding of the motor with the rectified voltage. The...
8729843 Apparatus including motor  
To suppress torque variation including various frequency components, a lot of measuring and adjusting operations are necessary, and this takes much time and trouble. An electronic apparatus...
8729841 Electronic circuit and method generating electric motor drive signals having phase advances in accordance with a user selected relationship between rotational speed of an electric motor and the phase advances  
An electronic circuit and an associated method used to drive an electric motor provide a user selectable relationship between rotational speed of the electric motor and phase advances of signals...
8723463 Motor control apparatus and method thereof  
A motor control apparatus includes a phase sensing circuit, a current sensing circuit, a controller and a driving circuit. The driving circuit receives a first driving signal and then controls a...
8710778 Control of an electric machine  
A method of controlling an electric machine that includes sequentially exciting and freewheeling a winding of the electric machine. The winding is excited by an excitation voltage and is...
8710779 Brushless electric motor or generator in shell construction  
The invention relates to an electric motor having at least two stators disposed coaxially to each other and a rotor, wherein each stator has 2*n poles, with n=1, 2, 3, . . . , wherein each stator...
8710788 Brushless motor drive apparatus and drive method  
The present invention relates to a drive apparatus and drive method for switching an energization mode when a voltage of a non-energized phase of a brushless motor crosses a threshold. In...
8704479 System and method for determining the start position of a motor  
A system and method for determining the start position of a motor. According to an embodiment, a voltage pulse signal may be generated across a pair of windings in a motor. A current response...
8698447 Energy saving system and method for devices with rotating or reciprocating masses  
A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop...
8698446 Method to save energy for devices with rotating or reciprocating masses  
A system and method are disclosed for turning off the voltage to a pump jack electric motor during predetermined periods of time to save energy. In the method, the motor's response to closed-loop...
8692492 Lead angle value setting method, motor driving control circuit, and brushless motor  
A method for setting a lead-angle value of a motor drive control circuit is disclosed. The motor drive control circuit energizes and drives the windings of a motor with an energizing timing based...
8686674 Method for controlling brushless DC motor  
A method for controlling a brushless DC motor, comprising transmitting a phase-inversion signal to a motor control unit by a rotor position detecting unit after a motor enters a stable state,...
8680799 Method and apparatus for applying a commutation advance automatically in a brushless DC motor  
To achieve peak acoustic and power performance, the coil or applied current should be in phase or substantially aligned with the back electromotive force (back-EMF) voltage. However, there are...
8680805 Control device that drives one driven object by two motors  
A control device that drives one driven object by a first motor and a second motor. A first processor has a first correction amount calculation unit configured to calculate an amount of correction...
8664899 Motor drive control device  
To present a motor drive control device capable of realizing high speed driving by a simple power feeding control method. The motor drive control device of the invention has a three-phase full...
8648558 Control of a brushless motor  
A method of controlling a brushless motor that includes exciting a winding of the motor for a conduction period over each electrical half-cycle of the motor. The length of the conduction period is...
8649887 Methods, systems and apparatus for implementing dithering in motor drive system for controlling operation of an electric machine  
Embodiments of the present disclosure relate to methods, systems and apparatus for implementing dithering in motor drive system for controlling operation of a multi-phase electric machine.
8643319 Control of a brushless motor  
A method of controlling a brushless motor that includes rectifying an alternating voltage to provide a rectified voltage, and exciting a winding of the motor with the rectified voltage. The...
8638053 Motor control circuit and method that synchronize a speed of an electric motor to an external clock signal  
Motor control circuits and associated methods to control an electric motor provide an ability to synchronize a rotational speed of the electric motor with an external clock signal, resulting in...
8618755 Control device for a motor and method for controlling said motor  
A control device is for a motor, especially a brushless DC motor. The control device contains a bridge circuit for generating a rotating field for the motor and a sensor system for detecting a...

Matches 1 - 50 out of 216 1 2 3 4 5 >