Trade-offs in temperature control of fast-ramp RTP systems

Trade-offs in temperature control of fast-ramp rapid thermal processing (RTP) systems from an open-loop optimal input point of view are investigated. Exact tracking of fast ramps with rates such as 250/spl deg/C/sec is usually not possible if other constraints, like actuator saturation and/or limite...

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Hauptverfasser: De Roover, D., Devasia, S.
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description Trade-offs in temperature control of fast-ramp rapid thermal processing (RTP) systems from an open-loop optimal input point of view are investigated. Exact tracking of fast ramps with rates such as 250/spl deg/C/sec is usually not possible if other constraints, like actuator saturation and/or limited temperature overshoot, have to be met. A recently developed trajectory redesign technique allows to trade-off exact tracking versus other limitations in an optimal way. Application of this technique to a model of a generic RTP system exemplifies the possibilities and limitations of fast-ramping temperature control.
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ispartof Proceedings of the 1999 American Control Conference (Cat. No. 99CH36251), 1999, Vol.1, p.76-80 vol.1
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Actuators
Chemical technology
Cost function
Filters
Manufacturing processes
Mechanical engineering
Rapid thermal processing
Temperature control
Trajectory
Virtual manufacturing
title Trade-offs in temperature control of fast-ramp RTP systems
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