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Match Document Document Title
US20140028230 MOTOR EXCITING DEVICE AND MOTOR EXCITING METHOD AND MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD  
A motor control device which can determine a magnetic pole position for a magnetic pole position detector included in a permanent magnet motor in which the reluctance torque proportion is larger...
US20110056716 ELECTRIC SAW COMMUNICATION  
The present invention relates to an electric saw (1) being powered by an external power supply (200) through a multicore cable (6). The multicore cable (6) includes electrical wires (24, 25, 27)...
US20140197767 SURFACE MOTOR DIRECT-DRIVE SUCKER-ROD SCREW PUMP DEVICE  
A surface motor direct-drive sucker-rod screw pump device is driven by a vertical three-phase permanent magnet brush-less DC motor, and comprises a motor controller (6), a rectifying circuit, an...
US20120176073 WIPER MOTOR  
In a wiper motor including a motor unit having a rotating shaft, and a gear unit having a speed reduction mechanism for reducing and outputting the speed-reduced rotation, a first speed reduction...
US20100098563 Surface Motor Direct-Drive Sucker-Rod Screw Pump Device  
A surface motor direct-drive sucker-rod screw pump device is driven by a vertical three-phase permanent magnet brush-less DC motor, and comprises a motor controller (6), a rectifying circuit, an...
US20130320899 BIASING CIRCUIT FOR HALL SENSOR AND HALL AMPLIFIER IN MOTOR DRIVING CIRCUIT  
Disclosed herein are a biasing circuit for a hall sensor and a hall amplifier in a motor driving circuit, the biasing circuit including: a regulator installed inside a singled packaged chip,...
US20140203746 MOTOR ASSEMBLY COMPRISING A BRUSHLESS DC MOTOR WITH CONTROL ELECTRONICS  
A motor assembly (101), comprising a brushless DC motor (102) with control electronics (103) which comprises at least two magnetic field sensors adapted to measure magnetic flux from magnetic...
US20110304291 TWO-PHASE BRUSHLESS DC MOTOR  
A brushless motor includes a two-phase winding stator having 4×n winding poles and auxiliary poles provided between the winding poles, and a rotor constituted by 6×n permanent magnet rotating...
US20120194112 Electrical Brushless Motor  
An electrical brushless motor is described, as well as a ceiling fan utilizing the electrical brushless motor.
US20130320898 MEANS AND METHOD FOR ALIGNING HALL SENSORS LOCATION IN A BRUSHLESS DC MOTOR WITH HALL SENSORS  
A method for aligning Hall sensors location in a brushless DC motor with Hall sensors, the method comprises driving the motor by a sensorless driving system for getting a first commutation phase...
US20140035503 THREE-PHASE MOTOR DRIVING APPARATUS AND THREE-PHASE MOTOR DRIVING METHOD  
The three-phase motor driving apparatus according to an aspect of the present invention comprises a controlling part that estimates a rotational position of the three-phase brushless motor based...
US20120306418 Low-Cost Minimal-Loss Flywheel Battery  
A low-cost minimal-loss zero-maintenance flywheel battery, to store electric power from a DC power source by conversion to kinetic energy, and regenerate electric power as needed. Its vertical...
US20120091936 MOTOR CONTROLLER  
A motor controller controlling a rotational speed of a motor and including a thermal detector, a capacitor, an operational amplifier (OP), a charging/discharging circuit, a flip-flop and a logic...
US20150008857 System for Aligning a Propeller  
A motor assembly that includes a motor (102) having a rotatable shaft, a hub coupled to the rotatable shaft, the hub having a propeller indexer to receive a propeller (104), when the propeller is...
US20090302793 BRUSHLESS MOTOR DEVICE  
An n-phase brushless motor device includes: a magnet 16 for magnetic pole position detection having a number of poles twice as many as that of a rotor and fixed to a face perpendicular to a...
US20140028229 MOTOR CONTROLLING CIRCUIT, MOTOR DRIVING DEVICE AND METHOD OF DRIVING MOTOR  
There is provided a motor controlling circuit including: a hall signal level detecting unit detecting a hall signal from a hall sensor; and a signal generating unit sensing a change in a level of...
US20090108785 AC-INPUT TYPE BRUSHLESS DC MOTOR AND ELECTRIC APPLIANCE MOUNTING THE SAME  
In an AC-input type brushless DC motor, a current control circuit controls an average current of an inverter circuit, a current indication circuit makes addition or subtraction, with respect to a...
US20090128084 MOTOR HAVING CONTROLLABLE TORQUE  
A controllable motor includes a rotor. A first stator winding set is operable, upon being energized, to generate and apply a first torque to the rotor. A second stator winding set independent of...
US20090009118 DRIVE CONTROL CIRCUIT FOR ELECTRIC MOTOR  
The drive control circuit for an electric motor is provided. The drive control circuit includes: an original drive signal generator that generates an original drive signal; an excitation interval...
US20080272722 Brushless direct current motor driving circuit  
A brushless DC motor drive circuit includes a drive unit and a transient current suppression circuit. The drive unit comprises a Hall component, a drive component, a first transistor and a second...
US20110140645 DUAL PURPOSE PERMANENT MAGNET SPEED SENSOR AND GENERATOR  
An apparatus is disclosed for simultaneously measuring the rotational speed and/or direction of a shaft, and providing control power in accordance with the shaft rotation. The apparatus includes a...
US20090189558 Actuator Position Homing Method and Apparatus  
An electric actuator motor drives an actuator leg between inner and outer limits of an actuator stroke relative to an actuator base. A controller detects when the actuator leg is at one of the...
US20090315493 SINGLE-PHASE BRUSHLESS FORWARD AND REVERSE TURN CONTROL CIRCUIT DEVICE  
A single-phase brushless forward and reverse turn control circuit device is provided, in which a PCB is provided on a stator unit and a rotor unit that are mutually encircled and spaced from each...
US20150061559 MOTOR CONTROLLER  
The outputs from a first magnetic detector and a second magnetic detector are supplied to first to fourth output circuits which are differential amplifiers, whereby first and second detected...
US20150061560 WASHING MACHINE AND CONTROL METHOD THEREOF  
A washing machine and a control method thereof capable of determining whether a driving motor is locked. A pulsator is rotatably mounted in a spin basket, a driving motor generates rotational...
US20070132411 Multi-stage contactless switch  
A multi-stage contactless switch, in particular for an operating element in a motor vehicle, has a movably arranged magnet and several Hall sensor elements spaced apart from each other. Each Hall...
US20100097026 METHOD AND DEVICE FOR TRACKING THE POSITION OF A COMPONENT DRIVEN BY AN ELECTRIC MOTOR  
In order to track the position of a component driven by an electric motor, wherein rotational movements of the electric motor are detected and used for a position count, deviations from an...
US20100045219 Position Detecting Device and Synchronous Motor Driving Device Using the Same  
A position detecting device which can increase accuracy in detecting the pole position of a motor used to perform quick acceleration and deceleration over the range from a zero speed to a high...
US20140340014 Analog Three Phase Self Excited Brushless Direct Current Motor  
A brushless direct current three-phase motor that is self driven and therefore does not require externally generated waveforms for its operation. The circuit connected to the motor is analog and...
US20140346993 Fan motor driving device, driving method, and cooling device and electronic machine using the same  
A fan motor driving device driven based on a pair of out-of-phase Hall signals may include a first driving portion, configured to (i) amplify a difference of the pair of the Hall signals with a...
US20090206828 FAILURE DETECTION APPARATUS FOR RESOLVER  
A failure detection apparatus for a resolver outputting a sine signal indicative of sin θ and a cosine signal indicative of cos θ according to a rotational angle θ of a rotator, includes an...
US20100237818 DRIVING CIRCUIT FOR BRUSHLESS MOTOR USING HALL ELEMENT  
A driving circuit feeds driving current to a coil in a brushless motor, and feeds bias current to a Hall element that senses the rotational position of the motor. The driving current and bias...
US20070262738 Motor driving device, image forming apparatus, and motor driving method  
A motor driving device includes an amplifying unit, a noise removing unit, an analog-to-digital converter, a calculating unit, and a motor driving unit. The amplifying unit amplifies an analog...
US20110285338 TORQUE AMPLIFIER APPARATUS  
A torque amplifying apparatus mounted to a non-driven component of a vehicle comprises a plurality of permanent armature magnets and a plurality of electromagnets, the permanent armature magnets...
US20130193889 METHOD AND DEVICE FOR DRIVING BRUSHLESS DIRECT-CURRENT MOTOR DURING DISPLACEMENT OF ACTUATING ELEMENT  
During displacement of an actuating element to a target position, a brushless direct-current motor is driven by a driving commutation pattern derived from rotor position signals. After the target...
US20100289442 BRUSHLESS MOTOR POSITION DETECTION DEVICE  
A brushless motor position detection device has a set of first Hall elements (main Hall ICs 18 for detecting magnetic pole positions) and a set of second Hall elements (sub-Hall ICs 19 for...
US20090322270 VEHICLE MOTOR CONTROL APPARATUS  
There is provided a vehicle motor control apparatus that alternately switches a first ON state in which one of the stator winding terminals is energized through an upper switch element group and...
US20090179514 Single-Phase Brushless Motor  
The single-phase brushless motor according to one aspect of the present invention includes a coil array having a plurality of magnetic coils 11-14; a magnet array having a plurality of permanent...
US20130278195 CONTROL APPARATUS OF ROTATING ELECTRICAL MACHINE  
A phase difference between an inductive voltage of an armature winding of a rotating electrical machine and an output of a magnetic pole position sensor is detected by a phase difference detection...
US20140197766 ELECTRONICALLY COMMUTATED ELECTRIC MOTOR COMPRISING ROTOR POSITION DETECTION WITH INTERFERENCE FIELD COMPENSATION  
An electronically commutated electric motor includes a stator and a rotor formed as a permanent magnet. A control unit is connected to the stator and configured to energize the stator to produce a...
US20130293172 MOTOR WITH MAGNETIC SENSORS  
Disclosed is an electric motor that includes a stator with a plurality of main poles, each of which includes a coil, and a rotor rotatable about an axis and having a magnet with magnetic poles in...
US20140265970 ELECTRIC MOTOR OR GENERATOR  
An electric motor or generator system comprising a rotor having a first set of magnet poles; a stator having a first sensor mounted on the stator and a second sensor mounted in substantially a...
US20090284201 MOTOR WITH MAGNETIC SENSORS  
Disclosed is an electric motor that includes a stator with a plurality of main poles, each of which includes a coil, and a rotor rotatable about an axis and having a magnet with magnetic poles in...
US20090289593 CONTROL DEVICE FOR AUTOMATIC TRANSMISSION  
A control device for an automatic transmission includes a current detecting unit for detecting motor current. The current detecting unit has a counter for counting variation number of a rotational...
US20150176965 ANGLE DETECTION APPARATUS, MOTOR DRIVING CONTROL APPARATUS AND ANGLE DETECTION METHOD  
Determining an amount of rotating a vector according to a result of comparing the rotated vector with a predetermined phase and rotating the vector according to the determined amount of rotating...
US20100134059 BRUSHLESS MOTOR APPARATUS  
A blushless direct current (BLDG) motor apparatus includes: a stator which is provided with a plurality of windings corresponding to N phases and wound in parallel independently of each other; a...
US20140320053 Generating a coil switching signal for a brushless DC motor  
Some embodiments provide a system that generates a coil switching signal for a brushless DC motor. During operation, the system determines a magnetic field of the brushless DC motor at a first...
US20120062162 BRUSHLESS ELECTRIC MACHINE  
The brushless electric machine includes a first drive member (30U) having a plurality of permanent magnets (32U); a second drive member (10) having a plurality of electromagnetic coils and capable...
US20120319633 DRIVE APPARATUS  
A drive apparatus includes a magnet rotor having a plurality of magnetic poles that are magnetized, a stator having a magnetic pole portion that opposes each pole of the magnet rotor, a coil...
US20100109578 MOTOR CONTROL DEVICE  
A motor control device for controlling rotation of a brushless DC motor of a ceiling fan includes a receiver unit that receives an input signal and outputs a command signal, a magnetic sensor unit...

Matches 1 - 50 out of 69 1 2 >