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TECHNICAL PAPERS

Continuous Optimal Infeed Control for Cylindrical Plunge Grinding, Part 2: Controller Design and Implementation

[+] Author and Article Information
Shaoqiang Dong, Kourosh Danai, Stephen Malkin

Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst

J. Manuf. Sci. Eng 126(2), 334-340 (Jul 08, 2004) (7 pages) doi:10.1115/1.1751424 History: Received July 01, 2003; Revised November 01, 2003; Online July 08, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic diagram of the on-line control strategy
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Controlled infeed rate profile with simulated nonlinear process dynamics
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Remaining controlled infeed and depth of burn with simulated nonlinear process dynamics
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Controlled infeed rate profile when thermal damage is not allowed
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Grinding power and burning power when thermal damage is not allowed
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Simulated actual infeed rate with and without wheel wear
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Recursively estimated parameters of the first-order system dynamic model
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Recursively estimated effective wear flat area from power measurements of a three-stage traditional cycle
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Measured power and calculated power using the average estimate of the effective wear flat area
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Remaining infeed and depth of burn when the effective wear flat area is under-estimated
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Remaining infeed and depth of burn when a safety margin is included to compensate for an under-estimated effective wear flat area
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Reduction of cycle time with an initial safety margin of 0.05 mm and a confidence level of 0.25 when wear flat area is under-estimated
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Reduction in cycle time by RCB with different confidence levels
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Remaining infeed and depth of burn with different safety margins
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Internal grinder retrofitted with a power monitor and size gage and interfaced to a personal computer
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Infeed rate profiles during the first experiment
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Measured power and burning power during the first experiment
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Remaining infeed and depth of burn during the first experiment
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Infeed rate profiles during the second experiment
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Measured power and burning power during the second experiment

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