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本文运用现代控制理论分析了２０万千瓦单元发电机组的动态非线性数学模型，并采用微扰线性化数学模型设计了多输入－多输出的准最优控制器。数字仿真结果显示本文设计的最优控制系统改善了单元机组跟踪负荷变化的能力。 本文并简要地论述了一类离散线性输出最优ＰＩ调节器的设计方法。线性最优ＰＩ调节器保留了线性最优调节器的优点，并同时具有经典ＰＩ调节器无调节静差的优点。
In this paper, the dynamic nonlinear mathematical model of 200 MW generator is analyzed by modern control theory. The multi-input-multi-output quasi-optimal controller is designed by the perturbation linearization mathematical model. The numerical simulation results show that the optimal control system designed in this paper improves the ability of unit to track the load changes. This paper also briefly discusses a discrete linear output optimal PI regulator design method. The linear optimal PI regulator retains the advantages of a linear optimal regulator and at the same time has the advantage of a non-regulated static error of a classic PI regulator.