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Class Information
Number: 318/609
Name: Electricity: motive power systems > Positional servo systems (e.g., servomechanisms) > "reset" systems (p.i.)
Description: Subject matter in which two error detectors are provided: One which detects the instantaneous positional errors and attempts to immediately correct for them. This detector contributes what is termed "proportional" control to the system. The second error detector senses the instantaneous position with respect to the long term average position. This detector contributes what is a termed "reset" or "integral" control to the system. The two signals are summed to provide a composite system error signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7414379 |
Servo control system |
Aug. 19, 2008 |
| 7395124 |
Adaptive motor drive method and apparatus including inertia estimator |
Jul. 1, 2008 |
| 7385363 |
Linear motor having progressive movement control |
Jun. 10, 2008 |
| 7375934 |
Power converter controlling apparatus and method applying a fault protection scheme in a motor drive system |
May. 20, 2008 |
| 7362062 |
Surgical machine and method for controlling and/or regulating a surgical machine |
Apr. 22, 2008 |
| 7336049 |
Method and apparatus for adaptive motor speed control |
Feb. 26, 2008 |
| 7321216 |
Motor control apparatus and vehicle steering apparatus using the same |
Jan. 22, 2008 |
| 7292000 |
Angular velocity measuring device and leg-moving robot |
Nov. 6, 2007 |
| 7292001 |
Gain adjusting method for servo control device |
Nov. 6, 2007 |
| 7276874 |
Storage apparatus, seek control method and program |
Oct. 2, 2007 |
| 7271566 |
Method and system for managing the voltage on the DC bus of a speed controller for an AC motor |
Sep. 18, 2007 |
| 7271562 |
Method and device for controlling startup of motor |
Sep. 18, 2007 |
| 7265509 |
Electric power steering apparatus |
Sep. 4, 2007 |
| 7265511 |
Motor control device |
Sep. 4, 2007 |
| 7240761 |
Electric power steering apparatus |
Jul. 10, 2007 |
| 7239104 |
Position-dependent friction compensation for steering systems |
Jul. 3, 2007 |
| 7227332 |
Driving control device and method for electric vehicle and program therefor |
Jun. 5, 2007 |
| 7224138 |
Method, system, and program product for feedback control of a target system utilizing imposition of a periodic modulating signal onto a command signal |
May. 29, 2007 |
| 7218074 |
Method and system for limiting the current output by a speed controller operating according to a U/F control law |
May. 15, 2007 |
| 7211981 |
Electric motor movement controlling method, an electric motor movement controlling system and a compressor |
May. 1, 2007 |
| 7208903 |
Control device for alternating-current motor |
Apr. 24, 2007 |
| 7205734 |
Control device for vehicular opening/closing body |
Apr. 17, 2007 |
| 7187152 |
AC servo drive without current sensor |
Mar. 6, 2007 |
| 7183738 |
Motor control device |
Feb. 27, 2007 |
| 7184847 |
Method and system for controlling a process in a plant |
Feb. 27, 2007 |
| 7164247 |
Motor torque control apparatus and method for automotive vehicle |
Jan. 16, 2007 |
| 7164953 |
Speed control device |
Jan. 16, 2007 |
| 7138781 |
Adaptive controller for PC cooling fans |
Nov. 21, 2006 |
| 7109608 |
Advanced smooth transition switch |
Sep. 19, 2006 |
| 7106021 |
Method, system, and program product for feedback control of a target system utilizing imposition of a periodic modulating signal onto a command signal |
Sep. 12, 2006 |
| 7103426 |
Anticipatory high frequency noise compensation in a distributed process control system |
Sep. 5, 2006 |
| 7102305 |
Apparatus and method for controlling motor |
Sep. 5, 2006 |
| 7098622 |
Programmable power supply with dual mode cross over clamps |
Aug. 29, 2006 |
| 7091684 |
Electric power steering apparatus |
Aug. 15, 2006 |
| 7085611 |
Control method of PI controller |
Aug. 1, 2006 |
| 7084603 |
Motor control device |
Aug. 1, 2006 |
| 7078874 |
Control device for alternating-current motor |
Jul. 18, 2006 |
| 7053569 |
Inverter control method and its device |
May. 30, 2006 |
| 7053581 |
Electrically operated drive controller, electrically operated drive control method and its program |
May. 30, 2006 |
| 7049781 |
Method for controlling a DC motor and relative open-loop voltage mode controller |
May. 23, 2006 |
| 7049775 |
Servo motor control unit for press-forming machine |
May. 23, 2006 |
| 7049782 |
Electrically operated drive controller, electrically operated drive control method and its program |
May. 23, 2006 |
| 7042186 |
Decoupling a harmonic signal from a signal path |
May. 9, 2006 |
| 7042187 |
Control apparatus for electric actuator |
May. 9, 2006 |
| 7030581 |
Motor controller |
Apr. 18, 2006 |
| 7026775 |
Method and apparatus for controlling speed of moving body |
Apr. 11, 2006 |
| 7026779 |
Motor control apparatus for controlling operation of mover of motor |
Apr. 11, 2006 |
| 7009349 |
Electric power steering apparatus |
Mar. 7, 2006 |
| 6998810 |
Position controller of feed shaft |
Feb. 14, 2006 |
| 6982536 |
Device and method for apportioning a movement of a machine element along a drive axis of a machine tool or production machine |
Jan. 3, 2006 |
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