过热汽温的稳定自适应预测函数控制

针对火电厂锅炉过热蒸汽温度的动特性设计了一种基于Laguerre模型的稳定自适应预测函数控制器。通过对闭环系统状态方程的稳定性分析，依据Lyapunov稳定性定理得到了控制系统稳定的必要条件。对于不同负荷情况下模型发生跳变所引起的不稳定，该文提出一种衰减因子补偿校正方法，并使用混沌算法在线寻优调节衰减因子，提高了控制品质。仿真研究中根据多模型切换性能指标函数来判断模型跳变，当负荷变化时，在线辨识模型参数，得到较好的控制结果，证明该算法的有效性。

Steady Adaptive Predictive Functional Control of Main Steam Temperature

A steady adaptive predictive functional control algorithm based on Laguerre model is applied to main steam temperature control system. The performance of closed-loop system is discussed, and stability condition is given based on Lyapunov stability theory. A new parameter adjusting method depended on chaotic optimization is introduced to enhance robustness significantly. The performance index of multiple model swich is used to judge the plant change in simulation. It has shown that the proposed algorithm is effective.