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| Application No. | Application Title | Issue Date |
| 20100066347 | Position sensor A resolver the resolver comprising an excitation coil for receiving an excitation signal formed by amplitude modulation of a high-frequency signal and a detection coil for outputting a detection signal. The resolver is arranged to detect a change in position of a rotor ... | 03/18/2010 |
| 20090085508 | MOTOR CONTROLLER, CONTROL SYSTEM, AND CONTROL METHOD A motor controller includes a reference signal generator; an A/D converter performing A/D conversion of the cosine and the sine signals outputted from a resolver; a first amplitude calculator calculating cosine and sine signal amplitudes based on twice-A/D converted cos... | 04/02/2009 |
| 20090066324 | Angular position detector and rotary electric device drive unit including the same The invention provides an angular position detector that can be configured at low cost and that accurately detects the angular position of a rotor in a rotary electric device and permits reliable control thereof even when the rotary electric device runs at a high speed.... | 03/12/2009 |
| 20080309278 | Method of Designing a Reluctance Resolver A method of designing a reluctance resolver, and the resolver comprises a stator and a rotor, and an exciting coil and two sets of outputting wires wind around the tooth portion of the stator. The designing method comprises the following steps: fixing relative position;... | 12/18/2008 |
| 20080284366 | APPARATUS AND MEHTODS FOR DIAGNOSING MOTOR-RESOLVER SYSTEM FAULTS Apparatus and methods are provided for diagnosing faults in multiple, associated motor-resolver systems. One apparatus includes a swapping circuit coupling a first resolver to a first or second decoder, and a swapping circuit coupling a second resolver to the first or s... | 11/20/2008 |
| 20080278106 | APPARATUS, SYSTEM, AND METHOD FOR SIMULATING OUTPUTS OF A RESOLVER TO TEST MOTOR-RESOLVER SYSTEMS An apparatus, system, and method are provided for simulating outputs of a resolver. One apparatus includes an adjustable sine waveform generator for simulating first and second sine wave signals, and an adjustable cosine waveform generator for simulating first and cosin... | 11/13/2008 |
| 20080272731 | METHOD AND SYSTEM FOR RESOLVER ALIGNMENT IN ELECTRIC MOTOR SYSTEM Methods and systems are provided for aligning a resolver in an electric motor system. The method includes commanding a d-axis current command and a speed command, operating an electric motor without a load in response to the d-axis current command and the speed command,... | 11/06/2008 |
| 20080272717 | METHOD AND APPARATUS TO DETERMINE ROTATIONAL POSITION OF AN ELECTRICAL MACHINE A control system and method to determine position of a rotor relative to a stator for a synchronous multipole electrical machine is presented, including one for application on a fuel/electric hybrid powertrain for a vehicle. The machine includes a stator, a rotor, and a... | 11/06/2008 |
| 20080129241 | Methods for Electric Vehicle Motor Control and Rotor Position Detection Fault-Tolerant Processing This invention provides methods for electric vehicle motor control and rotor position detection and fault-tolerant processing. The rotor position signal sampled by the system is compared with the previous rotor position θ0. When there is a sudden change, the... | 06/05/2008 |
| 20080129242 | SCALE FACTOR CALIBRATION AND COMPENSATION FOR ANGULAR POSITION RESOLVER In accordance with an embodiment of the present invention, a resolver system has at least one resolver and at least one amplifier in electrical communication with each resolver. A reference circuit is in electrical communication with the amplifiers. The reference circui... | 06/05/2008 |
| 20080106229 | Apparatus and method for detecting rotation angle of rotating body The rotation angle detection apparatus for detecting a rotation angle of a rotating body on the basis of a resolver signal outputted from a resolver mounted on the rotating body includes a first function of detecting a specific phase timing of the resolver signal, a sec... | 05/08/2008 |
| 20080073995 | BRUSHLESS MOTOR AND ELECTRIC POWER STEERING APPARATUS INCORPORATING THE SAME A brushless motor includes an annular stator and a rotor which has a plurality of permanent magnets alternately arranged in circumferential direction on the rotor to form poles and which is disposed within the stator to be rotatable with respect to the stator. The stato... | 03/27/2008 |
| 20080061724 | POSITION DETECTION DEVICE FOR PERMANENT MAGNETIC MACHINES The invention indicates a correct one of multiple rotor positions. For example, the invention can determine, in a PM machine, which of two possible positions a rotor is in when the position is known only within ±π radians. If the actual rotor position is known to be o... | 03/13/2008 |
| 20070296368 | High speed motor control The present invention relates to an apparatus and method for generating digital electrical signals which are representative of the angular position and rotational velocity of a rotatable shaft or similar movable mechanical component in a servomechanism. In particular, t... | 12/27/2007 |
| 20070262743 | Linking Mechanism Of Interlock Members For Robot A linking interlock mechanism in a biped robot is provided that prevents the reduction gears in the servo device from being damaged due to an external impulsive force. A servo horn is fit to the output shaft protruded from a servo device housing, which includes a motor,... | 11/15/2007 |
| 20060145648 | Signal processing device, signal processing method, signal processing program, recording medium storing the program, speed detector and servomechanism A signal processing device processes a position information signal (A sin θ, A cos θ) output from a sensor in accordance with a driving position of a motor and detects a driving speed of the motor. The signal processing device includes a position information signal pr... | 07/06/2006 |
| 20060138880 | Position detecting apparatus having electric motor and method for detecting position A reference position detecting apparatus includes an electric motor and a motor control unit. The electric motor includes a plurality of first coils and a plurality of second coils. The electric motor further includes a rotor that rotates when at least one of the plural... | 06/29/2006 |
| 20050174083 | Electric power steering system having failure detection apparatus An electric power steering system comprises a three-phase brushless DC motor, a steering torque detector, a resolver for detecting a resolver rotation angle of the three-phase brushless DC motor, a processing unit and a failure detection apparatus. The processing unit s... | 08/11/2005 |
| 20050046296 | Electric motor and steering system using the same An electric motor is disclosed wherein a positive magnetic pole winding and a negative magnetic winding for each of plural phases in each of two systems are wound respectively around two teeth adjoining each other of those teeth which are arranged circumferentially on a... | 03/03/2005 |
