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Title: Servo control booster system for minimizing following error

Abstract

A closed-loop feedback-controlled servo system is disclosed which reduces command-to-response error to the system's position feedback resolution least increment, .DELTA.S.sub.R, on a continuous real-time basis for all operating speeds. The servo system employs a second position feedback control loop on a by exception basis, when the command-to-response error .gtoreq..DELTA.S.sub.R, to produce precise position correction signals. When the command-to-response error is less than .DELTA.S.sub.R, control automatically reverts to conventional control means as the second position feedback control loop is disconnected, becoming transparent to conventional servo control means. By operating the second unique position feedback control loop used herein at the appropriate clocking rate, command-to-response error may be reduced to the position feedback resolution least increment. The present system may be utilized in combination with a tachometer loop for increased stability.

Inventors:
 [1]
  1. Mountain View, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865669
Patent Number(s):
4553078
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
servo; control; booster; minimizing; following; error; closed-loop; feedback-controlled; disclosed; reduces; command-to-response; position; feedback; resolution; increment; delta; continuous; real-time; basis; operating; speeds; employs; loop; exception; gtoreq; produce; precise; correction; signals; automatically; reverts; conventional; means; disconnected; becoming; transparent; unique; appropriate; clocking; rate; reduced; utilized; combination; tachometer; increased; stability; real-time basis; control loop; feedback control; control means; operating speed; servo control; increased stability; closed-loop feedback; following error; time basis; loop feedback; continuous real-time; /318/

Citation Formats

Wise, William L. Servo control booster system for minimizing following error. United States: N. p., 1985. Web.
Wise, William L. Servo control booster system for minimizing following error. United States.
Wise, William L. Tue . "Servo control booster system for minimizing following error". United States. https://www.osti.gov/servlets/purl/865669.
@article{osti_865669,
title = {Servo control booster system for minimizing following error},
author = {Wise, William L},
abstractNote = {A closed-loop feedback-controlled servo system is disclosed which reduces command-to-response error to the system's position feedback resolution least increment, .DELTA.S.sub.R, on a continuous real-time basis for all operating speeds. The servo system employs a second position feedback control loop on a by exception basis, when the command-to-response error .gtoreq..DELTA.S.sub.R, to produce precise position correction signals. When the command-to-response error is less than .DELTA.S.sub.R, control automatically reverts to conventional control means as the second position feedback control loop is disconnected, becoming transparent to conventional servo control means. By operating the second unique position feedback control loop used herein at the appropriate clocking rate, command-to-response error may be reduced to the position feedback resolution least increment. The present system may be utilized in combination with a tachometer loop for increased stability.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

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