Control-Oriented Modeling of Thermal Deformation of Machine Tools Based on Inverse Solution of Time-Variant Thermal Loads with Delayed Response

[+] Author and Article Information
S. Fraser

Senior Control Systems Engineer, LHP Software LLC, Columbus, Indiana

M. H. Attia

Aerospace Manufacturing Technology Center, Institute for Aerospace Research, National Research Council of Canada/McGill University, Montreal, Quebec, Canada

M. O. M. Osman

Mechanical Engineering Department, Concordia University, Montreal, Quebec, Canada

J. Manuf. Sci. Eng 126(2), 286-296 (Jul 08, 2004) (11 pages) doi:10.1115/1.1751188 History: Received March 01, 2003; Revised October 01, 2003; Online July 08, 2004
Copyright © 2004 by ASME
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Framework of control-based models for compensation of thermal deformation of machine tool structures
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Behavior of the real unmodified and modified integrands for I=200 (Eq. 6)
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Calibrated generalized step response with and without regularization
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FE model of the physical model used for experimental verification of the models
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Measured temperature difference with calibrated generalized step response and temperature measurement noise
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Generalized and regularized step response of the structure
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Magnitude of the Inverse Transfer Function G(r,s)
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Measured, and estimated temperature difference for triangular heat input (calibrated at Q=1.0)
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Estimated Q(t) for triangular heat input (calibrated at Q=1.0)
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Time variation of the relative thermal displacements for triangular heat input: (a) measured and estimated values, (b) residual errors in the y-direction




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