For such a complicated plant model, classic feedback control theory can't guarantee it's optimal performance.

对于这样一个复杂的被控对象，传统的反馈控制理论方法不能保证其性能最优。

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By applying the structure invariant theory in the control strategy, the feedforward-feedback control theory is applied in the control system design to reduce the redundant force.

论文从控制系统的结构方面，利用结构不变性原理，针对位置扰动设计专门的前馈补偿控制器，减小位置扰动的影响。

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In this dissertation, some control schemes based on gain scheduled and state feedback control theory and PID controller were proposed to control the nonlinear parameter-varying thermal objects.

论文结合增益调度控制方法、状态反馈控制理论和PID控制器设计方法，得到一些适用于非线性热工对象全工况运行的控制方案。

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