基于网络的过热蒸汽温度可靠性控制

Network-based reliability control for superheated steam temperature

研究了在考虑执行器故障情况下,以及过热汽温的控制信号通过网络进行传输的情况下,过热汽温的温度控制系统的可靠性控制问题。建立了执行器随机故障模型,以串级控制为基本控制策略,利用Lyapunov稳定性理论和线性矩阵不等式(linear matrix inequities,LMIs)技术,给出了系统随机均分稳定条件,提出了考虑执行器具有随机故障的过热蒸汽控制系统的控制器设计方法。通过仿真实验证明了提出的控制器设计方案的有效性。

This paper investigates the problem of reliability control for network-based superheated steam temperature control system , taking into account the actuator failure and transmition of the control signal of superheated steam through network .An integrated model for stochastic actuator failure was established , which takes the cascade con-trol as the basic control strategy .By using Lyapunov stability theory and linear matrix inequities （ LMIs） technolo-gy, the randomly and equally divided stability conditions for the system are given , and then the controller design method for superheated steam temperature control system which takes actuator stochastic fault into account was put forward.At last, an application example is provided to demonstrate the effectiveness of the proposed method .