| This paper is based on the project "Intelligent Control Theory and Method Research on Networked Control System" which is funded by the National Natural Science Foundation. As a part of the project, some contents, problems and recent researches on networked control system are introduced in this paper first. In order to reduce the occupation of network bandwidth, a method which finds the maximum transmit time can guarantee the stability of discrete control system is presented. For the sake of studying the network's delay influence on control system, a networked control system experiment software scheme is put forward in the last part of the paper. Now the software can run successfully and can complete the scheduling functions. |