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Multi-Scale Control: Improved Technique to Overcome Time-Delay Limitation

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Authors
Nandong, Jobrun
Zang, Zhuquan
Date
2013
Type
Conference Paper

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Nandong, Jobrun and Zang, Zhuquan. 2013. Multi-Scale Control: Improved Technique to Overcome Time-Delay Limitation, in ZHU, X. (ed), Proceedings of the 8th Conference on Industrial Electronics and Applications (ICIEA), Jun 19-21 2013, pp. 1527-1532. Melbourne, Vic: IEEE.
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Industrial Electronics and Applications (ICIEA), 2013 8th IEEE Conference on
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Industrial Electronics and Applications (ICIEA), 2013 8th IEEE Conference on
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Abstract

This paper presents a general multi-scale control scheme which can be used to control processes with significant time-delays. The salient feature of the multi-scale control scheme is to decompose a given plant into a sum of basic factors or modes. An individual sub-controller is specifically designed to control each of the plant modes and subsequently, an overall multi-scale controller is synthesized via combining all of the sub-controllers in a manner to enhance cooperation among these different plant modes. Numerical examples show that the multi-scale control scheme can provide improved performance and robustness over the conventional single-loop PID and Smith predictor schemes.