Life Extending Control by a Variance Constrained MPC Approach
| Authors: | Li Donglin, University of Alberta, Canada
Chen Tongwen, University of Alberta, Canada
Marquez Horacio J., University of Alberta, Canada
Gooden R. Kent, Syncrude Canada Ltd., Canada |
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| Topic: | 5.4 Large Scale Complex Systems |
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| Session: | Large Scale Complex Systems - Applications |
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| Keywords: | Damage, boilers, linear control systems, variance matrices,multivariable control systems. |
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Abstract
Abstract: The objective of life extending control (LEC), also known as damagemitigating control, is to design a controller to achieve a good tradeoff betweenstructural durability and dynamic performance in a system. In this paper,continuum fatigue damage theory for a boiler-turbine system is discussed. Toreduce the accumulated damage, a variance constrained model predictive control(VCMPC) problem is developed and an algorithm via linear matrix inequalities(LMIs) is derived. Moreover, the controller obtained by this algorithm can assignthe resultant closed-loop poles in a prescribed region. Finally, we apply thealgorithm in a boiler-turbine system.
