|
Match
|
Document |
Document Title |
|
|
7609016 |
Systems and methods for driving a motor
A control system includes a controller configured to provide a drive signal, and a switching device configured to generate an output control signal as a function of the drive signal in an on-state...
|
|
|
7583042 |
Device and method for driving a single phase motor
A driving device is provided for controlling the rotation of a motor. The driving device comprises an input module, a comparing module and a processing module. The input module includes a voltage...
|
|
|
7557526 |
Brushless motor control circuit assembly for ceiling fan
A power-saving, high-performance, low-noise brushless motor control circuit assembly is disclosed formed of a power supply circuit, a booster and compensation circuit, a voltage regulator circuit,...
|
|
|
7550940 |
Overload current control circuit for a DC motor
An overload current control circuit for a DC motor comprises: a DC motor, a DC power source, a power semiconductor assembly, and a sampling resistor that are connected in series. The overload...
|
|
|
7529608 |
Vehicle drive control device
A drive control device is provided with a determining section and a voltage increasing section. The determining section determines if the actual acceleration is deficient in comparison with the...
|
|
|
7509032 |
Motor drive control circuit and motor apparatus using the same
A motor drive control circuit includes a rotation control amplifier that compares the lower of a voltage limiting reference voltage of a reference voltage source and a rotation speed control...
|
|
|
7495402 |
Fan motor controller
A fan motor controller comprised of a power supply unit, three driving circuits, three power output circuits, a microprocessor, a voltage raising and compensation circuit, a Back-EMF sensing...
|
|
|
7489855 |
Systems and methods for driving a load
One embodiment of the invention relates to a control system. A control system includes a controller configured to generate a drive signal as a function of a comparison between a first control...
|
|
|
7474068 |
Position detection and external driver multiplexing system for DC motors
A system and method is provided for improved monitoring and controlling of mechanically commutated DC motors. The system and method include DC motors, pulse-count driver circuitry for driving the...
|
|
|
7466906 |
Motor control apparatus
A motor control apparatus includes a target value computation device which computes a target value of a current to be passed through a motor, a current detection device which detects a current...
|
|
|
7372228 |
Electric power tool with memory capability
The invention relates to an electric power tool having a control and/or regulating device for an electric motor. It is provided that the control and/or regulating device ( 4 ) is assigned an...
|
|
|
7190144 |
System and method for adjusting a PID controller in a limited rotation motor system
An adjustment system is disclosed for adjusting a proportional, integral, derivative controller in a limited rotation motor system. The adjustment system includes a first transform unit, a second...
|
|
|
7183730 |
Method and apparatus for receiving and manipulating sheet material
Disclosed are systems and methods for receiving and manipulating the travel of a sheet material, such as paper, from a device such as an imaging device. One embodiment of a system can be...
|
|
|
7133601 |
Amperage control for protection of battery over current in power tools
Amperage control of a power tool motor is provided by pulse width modulation of current from a power supply. The pulse width modulation may be varied according to the determined motor current and...
|
|
|
7088066 |
Automatic output power limiting electrical device
An eletrical device derives power from an incoming power source to produce output plower to drive the device. The device includes circuitry that determines at lehst one characteristic of the...
|
|
|
7068923 |
Speed control apparatus of motor
A speed control apparatus includes a speed control part 12 for generating a source current command based on a difference between a speed command of a motor 4 and speed detection in which a...
|
|
|
6977477 |
Systems, apparatus, and methods for motor control
Systems and methods are provided through which the current to a spindle motor of the recording medium of a mass storage device is modulated to avoid anomalies in the operation of mass storage...
|
|
|
6972534 |
Delay compensation for stable current regulation when using variable-delay random PWM switching
A control system for an electric machine having a rotor position sensor that generates a rotor position signal, a velocity module that generates an electric angular velocity value based on the...
|
|
|
6970643 |
Radiator having a fan in variable rotation speed
A radiator includes a voltage regulator for providing a reference voltage, a fan including a power end connected to the reference voltage via a first resistor and a feedback end for outputting a...
|
|
|
6922027 |
Method of controlling an electric motor, a system for controlling an electric motor and an electric motor
A system of controlling an electric motor, a digital method of controlling an electric motor and an electric motor are described. The system of controlling an electric motor of N phases comprises a...
|
|
|
6838842 |
Method for operating a brushless direct current motor
A brushless, synchronous direct current motor is operated by supplying a direct current voltage as an input voltage for commutating the motor phase windings. The speed of the synchronous motor is...
|
|
|
6703803 |
Fan motor driving circuit
A fan motor driving circuit of the present invention comprises a device for detecting a power source voltage and outputting a voltage in proportion to a difference between the power source voltage...
|
|
|
6614198 |
Method and apparatus for controlling release of hoisting motor brake in hoisting apparatus
A method and an apparatus for controlling release of a hoisting motor brake in a hoisting apparatus, where electricity is used as the driving force and a squirrel cage motor as the hoisting motor...
|
|
|
6608458 |
Electric motor, in particular wiper motor
An electric motor for operating a device for wiping a window of a motor vehicle has an electric motor part, and a control device for controlling/regulating a power of the electric motor part, the...
|
|
|
6586904 |
Compensation for variable voltage
A switched reluctance drive is supplied from a voltage source which varies from the voltage at which the control laws for the drive were determined. The control system compensates for this by...
|
|
|
6555982 |
Method and system for detecting an object in the path of an automotive window utilizing a system equation
The presence of an object in the path of an automotive vehicle window is detected. This is accomplished by sensing or observing a system variable, such as speed or motor current, and comparing this...
|
|
|
6552506 |
Method for determining the position of an element driven by the drive shaft of a direct current motor
A method for determining the position of a movable element to be driven by a direct current motor between first and second positions includes counting ripples contained in a motor current signal as...
|
|
|
6518719 |
Power tools with operating speed control circuit
A variable speed power tool may include a speed adjusting device and/or a maximum speed adjusting device for adjusting the operating speed, and a fixed operating speed switch. An operator...
|
|
|
6515443 |
Programmable pulse width modulated waveform generator for a spindle motor controller
A motor controller for a three-phase spindle motor used in the hard disc drive provides pulse width modulated (PWM) signals used to drive the motor. The PWM signals have duty cycles which are a...
|
|
|
6473657 |
Adaptive motion controller
An adaptive motion controller for driving a servo motor. The adaptive motion controller has an amplifier including a voltage command which can be set at a voltage at which the amplifier will be...
|
|
|
6462494 |
Fan with preset characteristic curve
A tan having a fan wheel and an electric motor driving it, and a control unit for controlling the motor output as a function of fan-specific parameters. An actual-value signal corresponding to an...
|
|
|
6438321 |
Control of high speed DC motor vertical voltage vector component
A motor controller utilizes sensors to detect the rotational speed and relative position of the motor rotor and generates a voltage vector to maintain the motor current in phase with the EMF before...
|
|
|
6437530 |
Method for electronic surveillance and control of the opening and closing procedure for electrically operated units
A method for the electronic monitoring and control of the opening and closing operation of electrically operated aggregates, particularly of window lifters and sunroofs in motor vehicles, is...
|
|
|
6433497 |
Drive circuit of a three phase BLDC motor
Disclosed is a three phase BLDC motor driving circuit which makes a BEMF voltage generated in a motor lower than a voltage source and makes a difference between the BEMF voltage and the voltage...
|
|
|
6351601 |
Fan speed control system having an integrated circuit fan controller and a method of using the same
A fan speed control system for controlling the operation and speed of a fan is described. The fan speed control system includes a power control block for supplying an output voltage to the fan. An...
|
|
|
6316893 |
Method and arrangement for adaptive load change compensation
A method and arrangement for adaptively compensating for load changes, particularly in connection with an electric motor drive which comprises a motor, the shaft of the motor being connected to a...
|
|
|
6304045 |
Commutation of split-phase winding brushless DC motor
A brushless DC motor utilizes alternating current including a plurality of phases of alternating current. Each phase of the plurality of phases is supplied to a respective phase winding group. Each...
|
|
|
6240246 |
Anti-resonance mixing filter
In a closed loop control system that governs the movement of an actuator a filter is provided that attenuates the oscillations generated by the actuator when the actuator is at a resonant...
|
|
|
6215262 |
Speed control method for switched reluctance motor (SRM)
A speed control method for an SR motor using a load with a large mechanical inertia that performs a PWM in an acceleration state wherein a speed of the motor radically changes and switches an...
|
|
|
6184645 |
Voltage mode drive for control circuit for an actuator using sampled back EMF control
An apparatus for controlling an actuator in response to a target speed voltage signal, the actuator having a moveable member and having a coil that influences movement of the member. A first...
|
|
|
6130989 |
Motor drive circuit
In a motor, drive transistors (7, 9) are turned off by drive signals I, J output from a control circuit (10) at a point adjacent to a phase changeover point of the energizing to drive coils (1, 2),...
|
|
|
6128436 |
Speed monitoring and control for a brushless motor
A speed monitoring and control method for a brushless motor controlled by a controller which provides switching control signals to a plurality of switching elements includes comparing one line...
|
|
|
6128437 |
Digital control for revolving speed of DC motor
A digital control device used with a direct-current (DC) motor is disclosed. The digital control device controls the revolving speed of a DC motor by outputting a certain intensity of current...
|
|
|
6111384 |
Method for controlling motor speed
A method of controlling motor speed. The motor speed control apparatus includes an encoder in mechanical association with the motor. The encoder has one channel providing an encoder signal having a...
|
|
|
6107764 |
Drive control for a switched reluctance motor
A control circuit and method for controlling a switched reluctance motor are provided. The control circuit includes a tone wheel and a Hall effect sensor for generating a position feedback signal...
|
|
|
6064165 |
Power window or panel controller
A controller for energizing a power-operable element, such as a sunroof, window, door, vehicle seat, a component of a major appliance or of a machine or of a conveyor system. The disclosed...
|
|
|
6061498 |
Electric motor control system
To provide an electric motor control system capable of reducing torque pulsation resulting from an intermittent control and assuring a smooth acceleration/deceleration. In a speed reference signal...
|
|
|
6041163 |
Apparatus for controlling a pump motor of a forklift truck
A pump motor control apparatus is adapted to control a pump motor of a forklift truck by using a driving transistor connected between a battery and the pump motor. The pump motor control apparatus...
|
|
|
6020715 |
Control device for a brushless motor
A motor driving power supplying section obtains an output voltage by switching-controlling a predetermined voltage outputted from a main power supply and smoothing a voltage thus...
|
|
|
6011902 |
Motor control circuit
In an optical disc player, as signals are read from and written to an optical disc, the optical disc is rotated by a spindle motor and an optical pickup is moved by a sled motor. These motors are...
|