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AssigneeOmat Ltd.
InventorsBoris Fainstein, Mark Zuckekrman, Igor Rubashkin, Eduard Takachnik
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An adaptive control system for adaptively controlling a turning operation performed at a work piece by a turning tool adjusts a controlled input operation parameter F to maintain an output operation parameter ΔM substantially at a predetermined value ΔMo to compensate variation of the output operation paramemeter ΔM caused by the variation of at least one operation condition B=B (t). The system comprises a sensor (8) of the output operation parameter ΔM for providing a signal Uc proportional to a current value ΔMc and an adaptive controller (10) for determining a value Fc to which the input operation parameter F should be adjusted, as a function of kUc, where k is a signal transmission coefficient which comprises an invariant signal transmission coefficient component ko inversely proportional to ΔMo. The adaptive controller includes an amplifier transforming the signal Uc into koUc, and an input parameter override unit controlled to adjust the controlled operation input parameter to Fc. The adaptive controller further comprises a correction processing means calculating kcUc, where kc is a varying signal transmission coefficient component whose current values depend on the variation of the operation condition B=B (t). The adaptive controller is capable of calculating k=f (ko, kc).
A method of adaptively controlling a turning operation performed on a workpiece by a turning tool, by controlling an adjustable input operation parameter F of the movement of the turning tool relative to the workpiece, to maintain an output operation parameter ΔM substantially at a predetermined value ΔMo and thereby to substantially compensate the variation of said output operation parameter ΔM caused by the variation of at least one operation condition B=B(t) varying in time, the method comprising the steps of:
An adaptive control system for adaptively controlling a turning operation performed at a workpiece by a turning tool, by adjusting a controlled input operation parameter F to maintain an output operation parameter ΔM substantially at a predetermined value ΔMo and thereby to substantially compensate variation of said output operation parameter ΔM caused by the variation of at least one operation condition B=B(t), the system comprising:
Dependencies are inferred from the claim text.