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Controller approximation using semidefinite programming
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DOI：10.1021/ie980536h.png)
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摘要
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Controller design, and the resulting control system performance, is frequently limited by the capabilities of the available control system hardware. When the control system hardware provides only a small set of fixed controller structures (e.g., proportional-integral-derivative, PID) or limited programming capabilities, it may be desirable to use the available functional elements in a manner such that the implemented fixed structure controller matches the performance of some reference advanced controller as closely as possible. This paper presents a systematic method for approximating the performance of an advanced controller with simpler fixed structure controllers using semidefinite programming. Tuning of the simple, fixed structure controller is obtained by matching a specific desired behavior of the advanced controller. The proposed method is illustrated using two case studies: the approximation of a linear quadratic regulator for a distillation column by a multiloop PID controller and cross-direction profile control for a paper machine.
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IF:
3.9
论文数:
4.0W
被引数:
9.6W
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