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Active Control of Tool Position in the Presence of Nonlinear Cutting Forces in Orthogonal Cutting
A.H. El-Sinawi
Pages - 157 - 172     |    Revised - 01-07-2011     |    Published - 05-08-2011
Volume - 2   Issue - 3    |    Publication Date - July / August 2011  Table of Contents
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KEYWORDS
LQG, Nonlinear ARX Model, Active Control, Orthogonal Cutting, Nonlinear Cutting Force
ABSTRACT
This work presents a practical approach to the control of tool’s position, in orthogonal cutting, in the presence nonlinear dynamic cutting forces. The controller is Linear Quadratic Gaussian (LQG) type constructed from an augmented model of both, tool-actuator dynamics, and a nonlinear dynamic model relating tool displacement to cutting forces. The latter model is obtained using black-box system identification of experimental orthogonal cutting data in which tool displacement is the input and cutting force is the output. The controller is evaluated and its performance is demonstrated.
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Associate Professor A.H. El-Sinawi
American University of Sharjah - United Arab Emirates
aelsinawi@aus.edu


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