The Research of Vehicle Network Control System Model

With the development of vehicle electronics, the problem of strong coupling and poor generality of vehicle electronic control products become more significant due to the closed-loop control mode of the vehicle electronic control systems. According to the trend analysis of the future development of Vehicle Electrical and electronic by using s-curve and nine-screen method of the TRIZ, vehicle network control system, also referred as VNCS is not only an important way to solve the above mentioned problem, but also an important trend for Vehicle Electrical and Electronic development. Since the basic theory and model of VNCS have not fully developed yet, the methodology of research and design of VNCS still need to be further studied. In this paper, according to vehicle electrical and electronic features, the theory of industrial network control system and communication system model is introduced to build up the vehicle network control system model, furthermore, vehicle network control system model based on CAN and FlexRay are simulated and analyzed. The research results indicated that, real-time performance of vehicle network control system model based on FlexRay is better than which based on CAN. At the same time, with the separation f vehicle control system sensors, actuators and controllers, the diversification of the system functions is increased, which is an effective solution for the problem of strong coupling and poor generality of vehicle electronic control products. This research provided guidance of basic theory and design for VNCS, and also forecasted the future of vehicle network control system development prospect.