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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.
Based on the linear variable parameter model of water level of PWR steam generator, a dissipative control theory is applied to design a state feedback dissipative controller with comprehensive and positive real performance index. The necessary and sufficient conditions for the existence of quadratic dissipative controller are designed. In order to improve the control performance, a PID controller is added to form a dual control system based on the state feedback dissipative controller, which is verified by the simulation results. The two controllers can not only ensure the gradual stability of the closed-loop system, but also meet certain performance requirements. The dual-control system has better control performance than the cascade PID control system.