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

Author

Chuang, Hua-Yi ; Liu, Chang-Huan

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Inst. of Technol., Taipei, Taiwan

Volume

28

Issue

1

fYear

1992

Firstpage

221

Lastpage

227

Abstract

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

Keywords

computerised numerical control; machine tools; model reference adaptive control systems; position control; axial motion; computer numerically controlled machine tools; contour accuracy; contour error bound; cross-coupled control; feedback control loop; input feedrate; model-referenced adaptive control; multiaxis machine tools; positioning system; Adaptive control; Automatic control; Computer errors; Computer numerical control; Control systems; Error correction; Machine tools; Machining; Motion control; Servomechanisms;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.120234

Filename

120234