Servo control booster system for minimizing following error

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865669

Wise, William L ^[1]

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1. Mountain View, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4553078
• OSTI ID: 865669
• Country of Publication: United States
• Language: English

Related Subjects

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/