Electricity: motive power systems – Positional servo systems – With compensating features
Patent
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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Ro Bentsu
Vickers, Inc.
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