Decentralized robust PI controller design for an industrial boiler
| Autor: | Tongwen Chen, B. Labibi, Horacio J. Marquez |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Engineering
business.industry Multivariable calculus Internal model Time constant Boiler (power generation) PID controller Control engineering Industrial and Manufacturing Engineering Computer Science Applications Nonlinear system Computer Science::Systems and Control Control and Systems Engineering Control theory Modeling and Simulation Robust control business Diagonally dominant matrix |
| Zdroj: | Journal of Process Control. 19:216-230 |
| ISSN: | 0959-1524 |
| DOI: | 10.1016/j.jprocont.2008.04.013 |
| Popis: | This paper presents a new scheme to design decentralized robust PI controllers for uncertain LTI multivariable systems. Sufficient conditions for closed-loop stability and closed-loop diagonal dominance (almost decoupling) of a multivariable system are obtained. Satisfying these conditions and robust performance of the overall system are modeled as local robust performance problems. Then, by appropriately selecting the time constants of the closed-loop isolated subsystems in the IMC (Internal Model Control) strategy, the defined local robust performance problems are solved. To design a decentralized robust PI controller for a real industrial utility boiler, a control oriented nonlinear model for the boiler is identified. The nonlinearity of the system is modeled as uncertainty for a nominal LTI multivariable system. Using the new proposed method, a decentralized PI controller for the uncertain LTI model is designed. The designed controller is applied to the real system. The simulation results show the effectiveness of the proposed methodology. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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