Robust controller design for simultaneous control of throttle pressure and megawatt output in a power plant unit

Haipeng Zhao, Wei Li, Cyrus Taft, Joseph Bentsman

Research output: Contribution to conferencePaper

Abstract

This paper presents an application of H and μ-synthesis controller design methods to a coal-fired power generation unit and compares the closed loop performance and robustness of H and μ-synthesis control laws with those of an H2 control law. All three controller synthesis procedures are applied to a two-input two-output plant model which has time delay, differential part, colored noise output disturbance, and sensor noise disturbance. Application of the procedures to the model shows that when the shape of the closed loop control signals of all three designs is closely matched, in the low frequency range the μ-synthesis and H control laws have robustness much better than that of H2 control law, while providing adequate robustness in the high frequency range. H control law gives the best performance, and H2 - the worst of the three designs, exhibiting the largest overshoot. The balancing procedure permits significant reduction of the order of the controllers without degradation in performance and robustness. The comparative evaluation of three designs shows that in power plant control problem H and μ-synthesis designs provide much more consistent and convenient performance/robustness trade-off than H2 design.

Original languageEnglish (US)
Pages802-807
Number of pages6
StatePublished - Dec 1 1999
EventProceedings of the 1999 IEEE International Conference on Control Applications (CCA) and IEEE International Symposium on Computer Aided Control System Design (CACSD) - Kohala Coast, HI, USA
Duration: Aug 22 1999Aug 27 1999

Other

OtherProceedings of the 1999 IEEE International Conference on Control Applications (CCA) and IEEE International Symposium on Computer Aided Control System Design (CACSD)
CityKohala Coast, HI, USA
Period8/22/998/27/99

ASJC Scopus subject areas

  • Control and Systems Engineering

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    Zhao, H., Li, W., Taft, C., & Bentsman, J. (1999). Robust controller design for simultaneous control of throttle pressure and megawatt output in a power plant unit. 802-807. Paper presented at Proceedings of the 1999 IEEE International Conference on Control Applications (CCA) and IEEE International Symposium on Computer Aided Control System Design (CACSD), Kohala Coast, HI, USA, .