An Optimal Control for Closely Spaced Mode Structures with Poor Controllability
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摘要: 研究可控性差的空间密集模态结构的控制问题,提出了一种最优控制方案,在适当配 置系统极点的同时,优化可控性差的模态的振幅.目标函数的寻优采用具有全局搜索能力的遗 传算法.为适应不确知的初始状态,也提出一种模型参考自适应机制,用来在线跟踪振幅最优控 制,自适应控制系统的稳定性得到证明.仿真结果表明了所提出控制方法的有效性.Abstract: One difficulty of controlling the structures with closely spaced modes is the poor controllability. In this paper, a new approach based on optimization of amplitudes of the subsystem with poor controllability is proposed. And the genetic algorithm is adopted for the optimization procedure. In order to use the optimization method on-line, a model-reference adaptive framework is also proposed, and the stability of controlled system can be guaranteed. Simulation results are given to demonstrate the effectiveness of the proposed approach.
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Key words:
- Flexible space structure /
- closely spaced modes /
- optimal control /
- adaptive control
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