Control system to reduce the effects of friction in drive trains of continuous-path-positioning systems. [Patent application]
Patent
·
OSTI ID:6292876
An improved continuous-path-positioning servo-control system is provided for reducing the effects of friction arising at very low cutting speeds in the drive trains of numerically controlled cutting machines, and the like. The improvement comprises a feed forward network for altering the gain of the servo-control loop at low positioning velocities to prevent stick-slip movement of the cutting tool holder being positioned by the control system. The feed forward network shunts conventional lag-compensators in the control loop, or loops, so that the error signal used for positioning varies linearly when the value is small, but being limited for larger values. Thus, at higher positioning speeds there is little effect of the added component upon the control being achieved.
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- Dept. of Energy
- Patent Number(s):
- None
- OSTI ID:
- 6292876
- Country of Publication:
- United States
- Language:
- English
Similar Records
Control system to reduce the effects of friction in drive trains of continuous-path-positioning systems
Linear motor drive system for continuous-path closed-loop position control of an object
Linear motor drive system for continuous-path closed-loop position control of an object
Patent
·
Tue Aug 17 00:00:00 EDT 1982
·
OSTI ID:6529331
Linear motor drive system for continuous-path closed-loop position control of an object
Patent
·
Mon Dec 31 23:00:00 EST 1979
·
OSTI ID:863650
Linear motor drive system for continuous-path closed-loop position control of an object
Patent
·
Tue Sep 09 00:00:00 EDT 1980
·
OSTI ID:6643915