Simulation research for networked cascade control system based on truetime

Abstract

Networked control system is a feedback control system formed by network with the advantages of resource sharing, less wirings, easy maintenance and expansion, and high reliability, etc. Now the research for networked control system largely focuses on single-loop control system and multiple-input and multiple-output control system. As cascade control system has the secondary loop which can overcome interferences quickly and improve the system performance markedly, it is very significant to carry out the research for networked cascade control system. TrueTime toolbox is a co-simulation platform based on Matlab/Simulink developed for networked control system. On the base of the structure analyzing of networked cascade control system, the simulation platform of networked cascade control system based on TrueTime has been built in this paper, and through the analysis of the simulation results on the conditions of the main characteristic parameters of the controlled object changed, increasing disturbance and network delay, which has illustrated the feasibility and effectiveness of the control scheme, having better robustness and adaptability.