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TECHNICAL BRIEFS

Constant Turning Force Adaptive Control Via Sliding Mode Control Design

[+] Author and Article Information
Chih-Lyang Hwang

Department of Mechanical Engineering, Tatung Institute of Technology, Taipei, Taiwan 10451

Bor-Sen Chen

Department of Electrical Engineering, National Tsing Hua University, Hsichu, Taiwan 30043

J. Dyn. Sys., Meas., Control 112(2), 308-312 (Jun 01, 1990) (5 pages) doi:10.1115/1.2896141 History: Received February 01, 1987; Revised February 10, 1989; Online March 17, 2008

Abstract

In the constant turning force adaptive control (CTFAC) system, the open-loop gain will vary and the stability cannot be assured when a cutting tool cuts a workpiece at various cutting depths or spindle operates in different speeds. In this paper, the spirit of sliding mode control is extended into discrete-time form to combine with parameter estimation having variable forgetting factor to stabilize the turning system against the variable gain and unmodeled dynamics, such as nonlinear perturbations, inaccurate measurements etc.

Copyright © 1990 by The American Society of Mechanical Engineers
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