Internet-based Servo System Remote Control Research

When Internet is introduced into control system, the control information can be transferred, exchanged and compared freely without time and space limitation. It is possible to construct a real telecontrol system, through which anyone can conrol any facility at anytime. This thesis analyses the digital servo system, constructs the telecontrol system based on Internet, and makes a research of it in the theory and realization methods. Main achievements are as follows:(1) The structure and frame of telecontrol system based on Internet are analyzed. And then this thesis analyzes timing components of network-induced time delay. The real time factor influence of telecontrol system and its solved method is analyzed.(2) The information Internet-induced time delays existing in both forward loop and feedback loop which are main factors to result in the system instability are analyzed. According to compensate principle, the method of dynamic performance compensator is brought forward. The compensate validity is proved by simulation test result.(3) The hardware-in-the-loop simulation software of the telecontrol system has been developed. The communication question between VC++ program and MATLAB technology was solved, and also others. Many experiments were performed and the results indicate the validity of the software.