Surface Finish Enhancement in a Turning Operation via Adaptive STR Control of the Depth of Cut

[+] Author and Article Information
E. Liasi

Vehicle Operations, Ford Motor Company, Dearborn, MI 48121

W. P. T. North

Department of Mechanical Engineering, University of Windsor, Windsor, Ontario, Canada N9B 3P4

J. Manuf. Sci. Eng 125(2), 289-296 (Apr 15, 2003) (8 pages) doi:10.1115/1.1559155 History: Received August 01, 1999; Revised May 01, 2002; Online April 15, 2003
Copyright © 2003 by ASME
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Block diagram of the dynamic system
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(a) Surface micro-hardness distribution; (b) 3D surface micro-hardness variation
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(a) Force fluctuations and (b) cutting force profiles
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Physical interpretation of tool workpiece relative displacement
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Dynamic model of the system
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Cross-section of the surface profile and 3D surface topography of the closed loop system-LQG self-tuning regulator
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Self tuning state controller with state estimation
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(a) Actual depth of cut and (b) tool workpiece relative displacement (open loop response)
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Cross-section of the surface topography and 3D surface topography (open loop)
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(a) Actual depth of cut; (b) Tool-workpiece relative displacement adaptive control strategy (self-tuning regulator)



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