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回热循环微型燃气轮机全工况状态反馈控制

, PP. 213-221

Keywords: 回热循环微型燃气轮机,全工况运行,状态反馈控制,状态观测器,固定收敛特性

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Abstract:

传统的微型燃气轮机控制系统采用基于设计工况简化线性模型的转速闭环PI控制策略,回热器的加入导致传统转速闭环控制方案的动态响应变慢且有振荡。该文在推导考虑回热器的微型燃气轮机非线性模型的基础上,提出了全工况状态反馈转速闭环控制策略。利用线性化状态空间方程设计全工况固定收敛特性状态观测器和状态反馈控制律,使观测变量和状态变量的收敛特性不受变工况影响,保证全工况运行的稳定性和动态特性的一致性,给出了普遍性观测器和状态反馈控制律随负载变化的解析多项式公式。通过对设计实例的分析和仿真表明所提出的控制策略的正确性和可行性。

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