Method and apparatus for compensating for windup in a machine

Details Method and apparatus for compensating for windup in a machine Method and apparatus for compensating for windup in a machine

1998-11-12

2000-05-09

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

With compensating features

318574, 318630, 318631, G05B 1304

Patent

active

060608544

ABSTRACT:
A method and apparatus for compensating for the effects of compliant elements in a positioning system is provided. The amount of compensation to be applied can be determined by measuring the lost motion errors which are prevalent during continuous motion of the movable member of the system. The compensation value determined can be used to adjust servo control commands, such as position commands for example. Preferably, the compensation is applied when the movable member is in motion and removed when the movable member comes to a stop. Even more preferably, the compensation is applied and removed gradually. The compensation can be used in additional to friction compensation and backlash compensation, and can be implemented in a machine tool system.

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