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本文分析了闭环系统动态品质与线性最优控制权矩阵Q之间的内在关系,提出了一种线性最优控制系统权矩阵Q新的灵敏度选取法。作为实例,用本文的方法为一单机无穷大电力系统设计了线性最优附加励磁控制系统,理论分析及仿真结果表明,所设计的控制系统动态品质非常令人满意。
This paper analyzes the inner relationship between the dynamic quality of the closed-loop system and the linear optimal control matrix Q, and proposes a new sensitivity selection method for the weight matrix Q of the linear optimal control system. As an example, the linear optimal additional excitation control system is designed for a single machine infinite power system by the method in this paper. The theoretical analysis and simulation results show that the dynamic quality of the designed control system is very satisfactory.