Network Induced Delay Strategy Research Based On Variable Structure Theory

Along with the control system scale daily expansion as well as the network software and hardware cost drop, the control network application is more and more widespread. The network control system is through the real-time network constitution closed loop feedback control system, the control system compares with traditional point-to-point like, the network control system has the information resource to be able to share, the segment few, the easy system expansion and the maintenance, reliable and the flexible higher merit, but simultaneously commercial run and controller after network transmission signal after, data transmission inevitable questions and so on existence time delay, drop, multi-package transmission, cause the network performance to drop are even unstable.This article primary coverage for has the time delay system control strategy research. In the article first introduced the network control system development survey and the network control system as a result of has joined the question which the network exists; Next, has carried on the time delay analysis to the network transmission, and based on linearity when the invariable industry object model, to contained the network the generalized accusation object to establish the discrete mathematics model; Once more, the controller which produces in view of the network transmission to the actuator and the sensor to the controller time delay question, to transmitted the time delay network control system to propose the time delay compensation strategy, has designed the slip form controller and the fuzzy slip form controller separately, and take the direct current machine gave the example simulation as the controlled member, proved based on changed the structure the network control latency compensation strategy feasibility and the validity.Finally has forecast the network control system theory prospects for development as well as the author needs to study and the diligently direction in later work.