The Controller Design With Stochastic Induced Packet Loss Compensating In Networked Control System

The main research of this dissertation relates to Networked control system (NCS), which is a kind of networked, distributed and intelligent closed-loop feedback control systems. Although NCS has a lot of advantages and wide range of applications, it also has some shortcomings. Since the insertion of the network, there are many inevitable problems, such as network-induced delays, data packet dropout, packet disordering and etc. These factors also pose great challenges for our research.This dissertation mainly considers the controller design of NCS relating to data packet dropout. Firstly, we design a controller to guarantee the finite time boundedness, and put the effects of data packet dropout combined with H∞ performance index. For a class of nonlinear NCS systems with data packet dropout, we design passive controller to control the system. Finally, we verify the results through the simulation.The main contents of this dissertation are as follows:(1) Introduce the characteristics of NCS. Then make a specific analysis to the problem in NCS, and analyze the causes and influence on them.(2) Design a state feedback controller to compensate the data packet dropout. By constructing a proper Lyapunov function, it gives a sufficient condition to guarantee the finite-time boundedness and the given control index. Simulation results are proposed to illustrate the effectiveness of the design methods.(3) Based on the data packet dropout compensation of a class of nonlinear NCS, it gives the finite-time boundedness conditions. By constructing a proper Lyapunov function, it designs a passive controller to compensate data packet dropout in NCS, and verify the results through the simulation.Through to the analysis and design of the NCS, it gives a detailed summary and outlook in the end.