A model-referenced adaptive control strategy for improving contour accuracy of multiaxis machine tools

To improve the contouring performance of multiaxis computer numerically controlled machine tools, a model-referenced adaptive control strategy, combined with cross-coupled control of axial motion, is proposed. A feedback control loop is established between the desired input feedrate an the output co...

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Bibliographic Details
Published in:IEEE transactions on industry applications 1992-01, Vol.28 (1), p.221-227
Main Authors: CHUANG, H.-Y, LIU, C.-H
Format: Article
Language:English
Subjects:
Adaptive control
Applied sciences
Automatic control
Computer errors
Computer numerical control
Control systems
Error correction
Exact sciences and technology
Machine tools
Machining
Mechanical engineering. Machine design
Motion control
Servomechanisms
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Summary:To improve the contouring performance of multiaxis computer numerically controlled machine tools, a model-referenced adaptive control strategy, combined with cross-coupled control of axial motion, is proposed. A feedback control loop is established between the desired input feedrate an the output contour error. By specifying a contour error bound, the desired feedrate is adaptively adjusted so that the resultant contour accuracy can be maintained within the specified bound. An experimental positioning system was constructed for implementing the control strategy. The experimental work shows the effectiveness of the method.< >
ISSN:0093-9994
1939-9367
DOI:10.1109/28.120234