A novel intelligent control architecture has been developed to regulate cutting forces during single-point turning operations. A self-adapting Sliding Mode Controller (SMC) accounts for parameter variations and unmodeled dynamics in the cutting process. A unique artificial neural network, the 2-Sigma network, statistically bounds modeling uncertainties between a low-order, linear dynamic model and the actual cutting process. These uncertainty bounds provide “localized” gains for the SMC, thus reducing excess control activity while maintaining performance. Initially, the 2-Sigma networks are trained off-line using experimental data from a variety of operating conditions. In the final implementation, the 2-Sigma networks are updated on-line, allowing the SMC to respond to parameter variations and unmodeled dynamics. Experiments conducted on a CNC lathe demonstrate the exceptional performance and robustness of this control system.
Intelligent Sliding Mode Control of Cutting Force During Single-Point Turning Operations
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received January 2000; revised July 2000. Associate Editor: M. A. Elbestawi.
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Buckner, G. D. (July 1, 2000). "Intelligent Sliding Mode Control of Cutting Force During Single-Point Turning Operations ." ASME. J. Manuf. Sci. Eng. May 2001; 123(2): 206–213. https://doi.org/10.1115/1.1366683
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