非线性锅炉汽轮机系统的鲁棒控制(英文)

Robust Control for a Nonlinear Boiler Turbine System *

本文采用环路成形Ｈ∞控制方法对一非线性锅炉汽轮机系统进行设计．为了能方便地在实际工程中实现复杂的控制器，本文提出用多变量ＰＩＤ 控制器逼近所得控制器的方法．最终简化的控制器由位于主对角通道的三个ＰＩ控制器及位于次对角通道的一个ＰＩ控制器实现，仿真表明所得控制器具有较好的信号跟踪、抗干扰性能，并能在较大范围操作点工作。

A loop shaping H ∞ controller is designed for a nonlinear multivariable boiler turbine system.In order to implement the complex H ∞ controller,we propose a method to reduce it to a multivariable PID controller.The final simplified controller is composed of three main channel PI controllers plus one off channel PI controller.Simulation shows that the designed controllers have good tracking,disturbance rejection properties,and robustness against the variations of the operation points due to the plant nonlinearity.