ROBUST ANALYSIS AND PID TUNING OF CASCADE CONTROL SYSTEMS |
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| Authors: | Wen Tan Jizhen Liu Tongwen Chen Horacio J. Marquez |
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| Affiliation: | 1. Department of Automation , North China Electric Power University , Beijing, China wtan@ieee.org;3. Department of Automation , North China Electric Power University , Beijing, China;4. Department of Electrical and Computer Engineering , University of Alberta , Edmonton, Alberta, Canada |
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| Abstract: | The robustness and performance of the cascade control system are analyzed in this article. A robustness measure is defined, and it is shown that it can reflect the interaction between the inner loop and the outer loop and has a clear indication of the robustness of each loop. The measure can serve as a graphic aid for tuning the cascade controller. Moreover, it is observed that the cascade controller can be tuned individually for each loop instead of sequentially. |
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| Keywords: | Cascade control PID tuning Performance Robustness Structured singular value |
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