Application of virtual simulation technology in network closed-loop control

Abstract

It is very hard to have a transparent and prompt interaction between user and remote controlled object due to uncertain time delay over the Internet,which severely limits the performance of network control systems.In order to solve the problem of random delay,a kind of three closed-loop network control structure based on virtual simulation was proposed.In accordance with the idea of open-loop system to achieve closed-loop control,this method constructed the virtual controlled object model in the client,made the operation states of virtual simulation system be similar or even identical to those of actual system,while allowing the operator to decide the next control instruction according to the operation of the virtual simulation system,so as to accurately give the required control instructions to the actual system,which ultimately achieved the purpose of remote real-time control.The simulation results show the validity and feasibility of the proposed method.