Analysis and Compensation Following Error of Feed Drive in CNC

Abstract:

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In CNC machining, the constant following error was caused by the uniform motion of feed drive, which could induced contour error in the multi-axis movement, and the contour error would affect machining accuracy. In this paper, the produce principle of following error is analyzed, as well as the influences of following error on contour of linear and circular interpolation. The following error was compensated by velocity feedforward controller, and a new method for identifying coefficient of velocity feedforward controller is presented, based on the actual observed values of following error. The following error was eliminated after compensating with the proposed method.

Info:

Periodical:

Edited by:

Zhenyu Du and Bin Liu

Pages:

591-597

DOI:

10.4028/www.scientific.net/AMM.26-28.591

Citation:

X. J. Sheng et al., "Analysis and Compensation Following Error of Feed Drive in CNC", Applied Mechanics and Materials, Vols. 26-28, pp. 591-597, 2010

Online since:

June 2010

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Price:

$35.00

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