反馈线性化方法在锅炉-汽轮机系统控制中的应用

为提高锅炉 -汽轮机系统的信号跟踪和抗干扰能力 ,利用输入 -状态反馈线性化和输入 -输出反馈线性化方法分别设计了锅炉 -汽轮机系统的控制律。对于输入 -状态线性化方法由于输入状态为线性关系 ,因此系统可以在较大的范围内正常的工作。对于输入 -输出线性化方法可以验证系统在平衡点邻域零动态稳定 ,然而计算机仿真表明利用输入 -输出反馈线性化设计的控制器由于零动态的稳定范围较小 ,系统只能工作在工作点的邻域。基于以上结果对输入 -状态和输入 -输出反馈线性化方法进行了比较分析。计算机仿真表明利用输入 -状态线性化方法所设计的控制器具有良好的信号跟踪和抗干扰能力

Application of feedback linearization in boiler-turbine systems

To improve tracking and disturbance rejection properties, the input state and input output feedback linearization methods are used to design the control laws of a boiler turbine system. For the input state linearization method, the states are related linearly to the inputs, so the system can operate well over a wide region. The zero dynamics of the system are verified to be stable for input output linearization method. However, computer simulations show that the stable region of zero dynamics is small, so the input output linearization controller can only operate in the neighborhood of operating point. Some comparisons and analyses between input state and input output feedback linearization are given based on above results. The computer simulations show that the input state linearization controller has good tracking and disturbance rejection properties.