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Class Information
Number: 318/661
Name: Electricity: motive power systems > Positional servo systems (e.g., servomechanisms) > With particular "error-detecting" means > With particular position measuring instruments > Differential transformer systems > Resolver systems
Description: Subject matter in which the particular position measuring instrument is a resolver. A resolver is a rotary transformer which has two phase windings on either or both the rotor and stator and may be used for resolving a vector into two mutually perpendicular components, such as translating rotor angle into electrical information corresponding to the sine and cosine of rotor angle. A resolver may also be considered as a two phase synchro.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7560891 |
Position control apparatus |
Jul. 14, 2009 |
| 7561968 |
Scale factor calibration and compensation for angular position resolver |
Jul. 14, 2009 |
| 7467456 |
Method of arranging a resolver |
Dec. 23, 2008 |
| 7446499 |
Position detecting apparatus having electric motor and method for detecting position |
Nov. 4, 2008 |
| 7408315 |
Motor control apparatus, motor control circuit, and method thereof |
Aug. 5, 2008 |
| 7362070 |
Electric motor control system including position determination and error correction |
Apr. 22, 2008 |
| 7321216 |
Motor control apparatus and vehicle steering apparatus using the same |
Jan. 22, 2008 |
| 7312590 |
Model railroad velocity controller |
Dec. 25, 2007 |
| 7309972 |
Method for determining the rotor position of a synchronous motor |
Dec. 18, 2007 |
| 7307392 |
Method and apparatus for processing the output signal of an encoder |
Dec. 11, 2007 |
| 7235966 |
Resolver unit and resolver using same |
Jun. 26, 2007 |
| 7224139 |
Servo driver and encoder signal processing IC |
May. 29, 2007 |
| 7205916 |
Digital method and apparatus for resolving shaft position |
Apr. 17, 2007 |
| 7174270 |
Rotation angle detecting apparatus and method of detecting rotation angle |
Feb. 6, 2007 |
| 7157906 |
Double variable reluctance resolver for a multiple speed resolver system |
Jan. 2, 2007 |
| 7138796 |
Rotation angle sensor |
Nov. 21, 2006 |
| 7135860 |
Variable reluctance resolver including rotor with multiple detection portions |
Nov. 14, 2006 |
| 7129665 |
Control apparatus for feed driving system |
Oct. 31, 2006 |
| 7119536 |
Two-resolver deviation angle detector having serially connected output windings |
Oct. 10, 2006 |
| 7102317 |
Method and apparatus to process an analog encoder signal |
Sep. 5, 2006 |
| 7103448 |
Robot system |
Sep. 5, 2006 |
| 7042190 |
Motor control apparatus and motor control method |
May. 9, 2006 |
| 7034490 |
Motor positioning servo loop using oversampling bitstream DAC |
Apr. 25, 2006 |
| 7012399 |
Position detector correction method and electrically-powered steering apparatus |
Mar. 14, 2006 |
| 7005815 |
Electric actuator system |
Feb. 28, 2006 |
| 7005771 |
Variable reluctance resolver |
Feb. 28, 2006 |
| 6998747 |
Multiplex resolver |
Feb. 14, 2006 |
| 6995538 |
Rotational direction detecting apparatus for a three-phase brushless DC motor |
Feb. 7, 2006 |
| 6977496 |
Coaxial multiplex position detector and rotating machine using coaxial multiplex position detector |
Dec. 20, 2005 |
| 6972700 |
Resolver/digital converter and control apparatus using the same |
Dec. 6, 2005 |
| 6803781 |
Resolver, resolver fault detection circuit, and resolver fault detection method |
Oct. 12, 2004 |
| 6788013 |
Permanent magnet electric motor and method of making same |
Sep. 7, 2004 |
| 6756759 |
Angle or position detecting apparatus, method thereof, servo apparatus, and servo method, and motor |
Jun. 29, 2004 |
| 6643606 |
Apparatus for measuring absolute rotation angle and method thereof |
Nov. 4, 2003 |
| 6605916 |
Rotation position control apparatus of rotary element of filter |
Aug. 12, 2003 |
| 6577957 |
Apparatus and method for detecting abnormality in a position detection device |
Jun. 10, 2003 |
| 6525502 |
Closed loop control of motor position and velocity |
Feb. 25, 2003 |
| 6522097 |
Position detecting apparatus and abnormality detecting apparatus |
Feb. 18, 2003 |
| 6518752 |
Resolver for measuring and determining angular positions or revolutions of a shaft |
Feb. 11, 2003 |
| 6498451 |
Torque ripple free electric power steering |
Dec. 24, 2002 |
| 6472841 |
Low cost redundant resolver system |
Oct. 29, 2002 |
| 6448759 |
Non-contact linear position sensor for motion control applications with inductive attenuating coupler |
Sep. 10, 2002 |
| 6411058 |
Resolver |
Jun. 25, 2002 |
| 6373219 |
Motor control system and motor control method |
Apr. 16, 2002 |
| RE37547 |
Software-based resolver-to-digital converter |
Feb. 12, 2002 |
| 6331759 |
Pulse drive angle measurement system and method |
Dec. 18, 2001 |
| 6313624 |
Position sensor with integrated signal-conditioning electronics on a printed wiring board |
Nov. 6, 2001 |
| 6281657 |
Image detecting apparatus and method |
Aug. 28, 2001 |
| 6243023 |
Encoder and parameter establishing device therefor |
Jun. 5, 2001 |
| 6211641 |
Capacitive resolver |
Apr. 3, 2001 |
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