基于PID控制的网络控制系统研究

Research of Network Control System Based on PID Control

该文针对网络控制系统的时延,综合其研究现状、方法以及仿真方法等,应用了Lyapunov函数证明系统全域渐近稳定,并将其转化为线性矩阵不等式(LMI)方程存在性求解问题。以理想网络环境为前提条件,系统控制性能为目标,研究存在固定时延的NCS问题,并设计了系统控制器;应用了实时性较好的TrueTime1.5仿真工具箱,基于Matlab运行环境,联合Matlab/Simulink设计仿真控制系统,对网络控制系统进行仿真试验。运用Matlab语言编写控制系统PID控制算法,联合Truetime工具箱设计仿真控制系统,证明了所设计的系统控制器的有效性。

For the delay of the network control system,integrated its research status,methods and simulation methods. The Lyapunov function is used to prove the global asymptotic stability of the system,and it is transformed into the existence problem of linear matrix inequality（LMI） equation. Taking the ideal network environment as the prerequi- site and the system control performance as the goal,the NCS problem with fixed delay is studied,and the system controller is designed. Application of real-time simulation toolbox better TrueTimel.5,based on Matlab operating envi- ronment,the United Matlab/Simulink design control system of simulation,the simulation experiment of network control system is carried out. The control system PID control algorithm is written in Matlab language,and the control system of simulation is designed in Truetime toolbox. The results show that the system controller is designed to be effective.