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Class Information
Number: 318/605
Name: Electricity: motive power systems > Positional servo systems (e.g., servomechanisms) > Digital or numerical systems > Analogue comparison > Synchro or resolver (e.g., transmitter simulators)
Description: Subject matter in which the analog comparison is by means of a synchro or resolver system. A synchro is a rotary transformer used for the instantaneous electrical transmission or reception of the angular position data of rotating parts. A resolver is a rotary transformer for resolving a vector into two mutually perpendicular components, such as translating error angle into electrical information corresponding to sine and cosine of rotor angle.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7561968 |
Scale factor calibration and compensation for angular position resolver |
Jul. 14, 2009 |
| 7467456 |
Method of arranging a resolver |
Dec. 23, 2008 |
| 7459872 |
High speed motor control |
Dec. 2, 2008 |
| 7408315 |
Motor control apparatus, motor control circuit, and method thereof |
Aug. 5, 2008 |
| 7382295 |
Control unit for electric power steering apparatus |
Jun. 3, 2008 |
| 7372223 |
Electric drive control apparatus and method |
May. 13, 2008 |
| 7362070 |
Electric motor control system including position determination and error correction |
Apr. 22, 2008 |
| 7312590 |
Model railroad velocity controller |
Dec. 25, 2007 |
| 7307392 |
Method and apparatus for processing the output signal of an encoder |
Dec. 11, 2007 |
| 7298109 |
Electric power steering apparatus, and method for detecting abnormality of angle detector thereof |
Nov. 20, 2007 |
| 7224139 |
Servo driver and encoder signal processing IC |
May. 29, 2007 |
| 7164251 |
Oscillation adjuster and oscillation adjusting method |
Jan. 16, 2007 |
| 7042190 |
Motor control apparatus and motor control method |
May. 9, 2006 |
| 7012399 |
Position detector correction method and electrically-powered steering apparatus |
Mar. 14, 2006 |
| 6995538 |
Rotational direction detecting apparatus for a three-phase brushless DC motor |
Feb. 7, 2006 |
| 6912427 |
Programmable limit switch with distributed intelligence |
Jun. 28, 2005 |
| 6891460 |
Rotor transformer positioning mechanism and operating method therefor |
May. 10, 2005 |
| 6873129 |
Method of controlling rotational velocity of a rotatable member during encoder initialization for an imaging apparatus |
Mar. 29, 2005 |
| 6834244 |
Resolver phase calibration system and method |
Dec. 21, 2004 |
| 6798156 |
Method for minimising the phase errors during the driving of an electric motor, and a circuit using the method thereof |
Sep. 28, 2004 |
| 6788013 |
Permanent magnet electric motor and method of making same |
Sep. 7, 2004 |
| 6765361 |
Motor control circuit |
Jul. 20, 2004 |
| 6756759 |
Angle or position detecting apparatus, method thereof, servo apparatus, and servo method, and motor |
Jun. 29, 2004 |
| 6744230 |
Method and apparatus for fine resolution brushless motor control |
Jun. 1, 2004 |
| 6621242 |
Motor speed control circuit having a synchronous PWM signal |
Sep. 16, 2003 |
| 6525502 |
Closed loop control of motor position and velocity |
Feb. 25, 2003 |
| 6522097 |
Position detecting apparatus and abnormality detecting apparatus |
Feb. 18, 2003 |
| 6472841 |
Low cost redundant resolver system |
Oct. 29, 2002 |
| 6411058 |
Resolver |
Jun. 25, 2002 |
| 6331759 |
Pulse drive angle measurement system and method |
Dec. 18, 2001 |
| 6320344 |
Position control device |
Nov. 20, 2001 |
| 6255794 |
Procedure for the digital evaluation of analogue resolver output signals |
Jul. 3, 2001 |
| 6246201 |
Electronic cam control system |
Jun. 12, 2001 |
| 6239571 |
Resolver |
May. 29, 2001 |
| 6239572 |
Servo control apparatus |
May. 29, 2001 |
| 6194863 |
Method and apparatus for driving a stepping motor |
Feb. 27, 2001 |
| 6166507 |
Disk drive system |
Dec. 26, 2000 |
| 6084376 |
Low cost resolver system |
Jul. 4, 2000 |
| 5932986 |
Precise control of the rotational velocity of brushless alternating current electric servo motors |
Aug. 3, 1999 |
| 5898287 |
Slip controlled induction motor using variable frequency transducer and method for controlling slip |
Apr. 27, 1999 |
| 5867023 |
Converter circuit for rotary transformer sensing devices |
Feb. 2, 1999 |
| 5796228 |
Method of controlling rotary magnet multi-phase synchronous motor and control therefor |
Aug. 18, 1998 |
| 5763976 |
Stator wound resolver with staggered rotor |
Jun. 9, 1998 |
| 5760359 |
Motor control apparatus equipped with a controller for controlling rotational position of motor |
Jun. 2, 1998 |
| 5739659 |
Position detecting apparatus and method therefor |
Apr. 14, 1998 |
| 5708344 |
Resolver for detecting rotation position on the basis of response current to pulse voltage |
Jan. 13, 1998 |
| 5621294 |
Apparatus and method for force compensation in a variable reluctance motor |
Apr. 15, 1997 |
| 5473237 |
Angle-position sensor for the absolute measurement of the angle of rotation over a plurality of revolutions |
Dec. 5, 1995 |
| 5455498 |
Angle of rotation detector |
Oct. 3, 1995 |
| 5446966 |
Angular position transducer |
Sep. 5, 1995 |
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