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7633247 |
Control apparatus for motor generator of hybrid vehicle
According to the invention, there is provided a control apparatus for a motor generator of a hybrid vehicle. The control apparatus includes a determiner, a comparator, and a controller. The...
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7629763 |
Actuator assembly including a single axis of rotation locking member
An actuator assembly including an actuator housing assembly and a single axis of rotation locking member fixedly attached to a portion of the actuator housing assembly and an external mounting...
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7629764 |
Nonlinear motor control techniques
The present invention provides a torque loop control method for servomotors utilizing discontinuous pulse width modulation that incorporates measuring the power factor in real time. Also included...
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7626350 |
Motor drive apparatus and motor drive method
A motor drive apparatus and motor drive method reduce vibration and acoustic noise by not requiring a non-activation period for rotor position detection, and enable stable, high efficiency motor...
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7622877 |
Method and system for controlling permanent magnet AC machines
Methods and systems are provided for controlling permanent magnet machines under varying loads. The method comprises generating a d-axis voltage command and a q-axis voltage command, producing a...
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7622873 |
Motor drive device and drive method
A reverse current detection unit detects the direction of the motor current during the synchronous rectifier period based on the polarity of the on voltage of a switching device contained in the...
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7622876 |
Overload prevention device for permanent magnet DC motors
A method, apparatus or computer program implements an overload prevention approach involving monitoring a speed of a motor; detecting an overload condition of the motor based on the monitored...
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7623327 |
Motor protective device
A heating value calculation part obtains a substantial heating value based on the difference between a heating value and a radiating value attributed to a motor supply current. The radiating value...
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7617896 |
Control device for an electric vehicle
An electric vehicle is provided with an electric motor and a transmission capable of being shifted by a shift mechanism from a neutral state to a start-up speed stage selected state in which a...
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7615951 |
Method and system for limiting the operating temperature of an electric motor
A method and system for limiting the operating temperature of an electric motor is provided. A maximum operational temperature of the motor is determined. A current operational temperature within...
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7615960 |
Rotation control device, rotation control method and construction machine
In stopping a rotary body of an electric rotary excavator (a construction machine), a control-system changing unit of a rotation control device changes a control law from a speed control law to a...
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7615950 |
Control device for hybrid electric vehicle
Driving forces of an engine and an electric motor can be transmitted to driving wheels, and the engine and the driving wheels can be mechanically connected and disconnected by a clutch. A vehicle...
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7615952 |
Electric motor driving device, and air conditioner using the same
Disclosed is a motor-driving device capable of protecting an inverter from breakdown. First current-protecting section retains reference voltage value Vref 1 as a preset value. If the current to...
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7609014 |
System and method for universal adaptive torque control of permanent magnet motors
A system and method for controlling any of a variety of permanent magnet motors includes normalizing motor parameters with respect to demagnetization current of a motor and developing a...
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7607500 |
Internally electrically powered bumper cars comprising multiple drive wheels and integral hub motors
“Bumper car” amusement rides are disclosed. An exemplary bumper car comprises a frame, a seat, a portable source of electrical power for propelling the car, multiple drive wheels, a motor...
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7605552 |
Control apparatus for electric vehicles
A motor control unit executes a system voltage stabilization control for suppressing variation in a system voltage by operating reactive power of a motor/generator unit including an AC motor, and...
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7598691 |
Current control device and method
A current control device for a fan motor includes a current sampling module, a signal generating module, a current detecting module and a current controlling module. The current sampling module...
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7598694 |
Power supply apparatus
A power supply unit includes an input-side rectifying circuit ( 4 ), an inverter ( 8 ) and an output-side rectifying circuit ( 12 ), which include power semiconductor devices. The power supply unit...
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7595600 |
Method and system for torque control in permanent magnet machines
Methods and systems are provided for controlling permanent magnet machines. The method includes determining a maximum torque of the PM machine based on an error between a commanded d-axis flux and...
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7592770 |
Parking control technique for permanent magnet motor drives with sinusoidal BEMF
A method and system for controlling a current regulator motor control for parking a motor rotor in a predetermined position, wherein a first current command and a first angle command are supplied...
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7592765 |
Method and system for controlling synchronous motor drive systems
Methods and systems are provided for controlling synchronous machines. The method comprises generating a d-axis current command and a q-axis current command, producing a modified current command...
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7592766 |
Gearless wheel motor drive system
Methods and apparatus are provided for an electric vehicle embodying an axial flux traction motor directly coupled to a wheel thereof. The traction motor comprises a stator having coils for...
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7589486 |
Control system for multiphase rotary electric machines
A control system controls, based on a comparison between a waved real current to be supplied to a multiphase rotary electric machine and a hysteresis region established by a waved command signal, a...
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7586278 |
Control apparatus for electric vehicles
In a control apparatus for an electric vehicle, an input power operation quantity that reduces the difference between a target value of a system voltage and a detected value of the voltage is...
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7586277 |
Electric power steering device
An electric power steering device changes the discontinuous non-linear characteristics in the duty ratio of the PWM signal versus motor current generated during steering wheel handle return into...
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7579800 |
Motor control method and device thereof
A motor control apparatus comprises the amplitude adjustment section and the peak voltage control section so as to adjust the torque control output in correspondence with the output voltage of the...
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7576501 |
Method for controlling a hybrid electric vehicle powertrain with divided power flow paths
A method is disclosed for enhancing reverse driving torque in a hybrid electric vehicle powertrain in which an electric motor is used for providing forward driving torque as well as reverse driving...
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7573219 |
Drive belt slip detection
A method and apparatus is disclosed for detecting whether belt slip is occurring between an electric machine and a machine drivingly connected together by a drive belt using only measurements of...
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7574294 |
Controller for electric power steering device
A control apparatus of an electric power steering apparatus is provided in which a nonlinear element of a motor model of-the electric power steering apparatus is compensated beforehand to linearize...
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7567049 |
Fluid flow control for fluid handling systems
A controller for an electric motor in a blower system includes an input for receiving an air flow demand. The controller is configured for producing drive signals for the electric motor from the...
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7567051 |
Position shift control apparatus ensuring durability and operation accuracy thereof
A position shift control apparatus is provided which includes an electrical motor joined to an object through an output shaft and a torque transmission mechanism, a detent mechanism producing...
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7567046 |
Motor-driving apparatus
An object of the present invention to accurately and reliably detect rotational positions of a rotor irrespective of noise overlapping inductor voltage. Employed for accomplishing the...
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7567047 |
Electric motor control strategies for using a low resolution position sensor
An electric motor control strategy includes using a low resolution position sensor that provides a square wave output signal. The position sensor information is converted into sinusoidal...
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7564204 |
Motor speed control circuit
A motor speed control circuit which controls a rotational speed of a motor by controlling an amount of current flowing through a drive coil of the motor. The control circuit comprises a reference...
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7564207 |
Peak hold circuit, motor drive control circuit having the peak hold circuit and motor apparatus having the motor drive control circuit
A peak hold circuit is provided that operates stably even if a peak voltage to be held of a motor-drive-current detection voltage is minute. The peak hold circuit includes: a level shift circuit...
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7564203 |
Actuator with DC motor and with irreversible transmission for maneuvering a roller blind
The actuator (ACT) comprises:
a DC motor (MOT) having an armature energized via brushes (B) and a bar commutator with segments (L) and driving the movable element (LD) by way of a mechanical...
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7560886 |
Motor controlling device for mounting on vehicle
A motor controlling device for mounting on a vehicle, which includes a controller capable of controlling a DC brushless motor at high response and high accuracy. The motor controlling device for...
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7557530 |
Method, apparatus and article for detecting rotor position
A system, method and article for detecting a polarity of a rotor in a motor and/or a generator. In one embodiment, a rotor polarity detection signal is applied and a response thereto is evaluated...
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7557527 |
Electrical power converter and control method
An electrical power converter comprises a first direct current line connected to a first direct current source, a second direct current line connected to a second direct current source, an...
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7554281 |
Synchronous machine control apparatus
A synchronous machine control apparatus which can produce a torque level as close as possible to a desired torque command level while considering limitations on an output current of a power...
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7550939 |
Redundant instantaneous trip detection
A motor circuit protector that trips in accordance with an instantaneous trip curve that is split into three protection regions, a self-protection region, an in-rush avoidance region, and a...
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7550938 |
Mechanical-electronic position sensor
A mechanical-electronic position sensor in which the wiper voltage of a potentiometer actuated by a plunger is measured, processed by a microcontroller, and is available as an analog output signal...
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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...
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7548035 |
Control apparatus of electric power steering apparatus
The invention relates to a control apparatus of an electric power steering apparatus structured such as to apply a steering assist force generated by a n-phase motor to a steering system of a...
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7548036 |
DC motor mechanical shock protection system
A DC motor mechanical shock protection system monitors the motor current to determine the torque the motor is applying to the gearbox, and takes mitigating action if the torque approaches a level...
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7541763 |
Servo control device
A servo control device includes a current supply unit for supplying a drive unit with a drive current for driving a target to be controlled; a first detector for detecting at least the drive...
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7541756 |
Temperature compensated test for a power distribution switching device
An actuator, such as a motor of a power distribution switching device, may be operated by measuring at least one temperature parameter associated with an energy storage device (e.g., a battery) of...
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7538514 |
Systems and methods for controlling torque of a motor
A system and a method for controlling torque of a motor are provided. The method includes modifying a phase advance angle based on an identified phase coil that has a faulted condition, a type of...
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7538992 |
System, device, and method for over-current relays protecting motors
A system, method, and device for protecting an induction motor are disclosed. The exemplary system may have a module for determining the current drawn by the motor and a module for determining the...
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7531982 |
Motor drive apparatus capable of accurately estimating demagnetization of permanent magnet motor
A map holding unit holds, in the form of a map, a voltage control amount of the q axis in a case where no demagnetization of a permanent magnet motor occurs. Based on a motor revolution number,...
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