一类蒸汽发生器水位控制系统的分段耗散控制

基于压水堆蒸汽发生器水位的线性变参数模型，应用耗散控制理论，设计了综合和正实性能指标的状态反馈耗散控制器。应用二次型耗散控制器存在的充分必要条件，设计了对应于一个供给率函数的分段状态反馈耗散控制器。为了提高控制性能，在状态反馈耗散控制器的基础上添加了PID控制器组成了双控制系统。仿真结果验证，所设计的两种控制器不仅能够保证闭环系统的渐进稳定，并且能够满足一定的性能指标，双控制系统与串级PID控制系统相比具有更好的控制性能。

A class of piecewise dissipative control of steam generator water level

This paper was concerned with the design of a class of state feedback dissipative controller with a mixed H∞ and positive real performance for the water level control of a nu-clear steam generator with parameter varying dynamics .The necessary and sufficient condi-tion was used to design piecewise state feedback dissipative controller with respect to a quad -ratic energy supply function .Moreover, a piecewise dual-control scheme based on PID con-trol and state feedback dissipative control is investigated to improve the control performance . The simulation results showed that the present control strategy not only could guarantee the asymptotic stability of the closed -loop system , but also satisfied the required performance indicators.Furthermore, the proposed dual-control scheme had better control performance than the cascade PID control .