Research On Time Delay Compensation Strategy Of Networked Control System Based On Truetime

We use wireless or wired network to make controller,actuator,controlled object and sensor form control system and share resources,so as to form networked control system.Due to the limitation of bandwidth and the competition of different nodes,there will inevitably be time delay,packet loss and data dislocation.Delay is a factor that reduces system performance and even makes the system unstable.In this paper,we use True Time to analyze the factors affecting the performance of networked control system,and verify the proposed delay compensation strategy,so as to provide reference for the design of network system.It includes the following four parts.Firstly,the simulation model of networked control system is established by using the simulation toolbox True Time2.0,and the factors that affect the system performance are analyzed,which lays the foundation for subsequent research on simulation of time delay compensation strategy.By analyzing the performance of networked control systems with different sampling periods,different lengths of time delays,different packet loss rates and whether there are disturbances,we summarize the factors that affect performance,and provide a basis for the design of networked control systems.Secondly,the time delay compensation control problem for a class of discrete time systems with bounded control is studied.First,the state feedback delay compensation controller is designed.Then,the Lyapunov stability theory and matrix transformation are applied to delay compensation for the unbounded control.The results are then extended to nonnegative control and bounded control,and all results are presented in the form of linear programming(LPs).Finally,a numerical example is used to illustrate the effectiveness of the proposed method.Thirdly,the third chapter's research method is further applied to the nonlinear system T-S fuzzy system,and the control mode is further promoted.It uses both state feedback and output feedback.In the end,an example is given to illustrate the effectiveness of the proposed method.Finally,we use True Time2.0 to build a time delay compensation strategy model of networked control system,so as to compare the effect of networked control system before and after the time delay compensation,verify the feasibility and practicability of the proposed theory,and provide a basis for the selection of compensation strategy.