Design Of Mixed Communication Network For Complex Automotive Electronic Control Systems

As great progresses have been made in electronics and control technologies,and great demands have risen from the market with safer, greener and better drivingexperience, on-board vehicle electronic control systems have been widely applied intoday’s automotive industry. However, the increasing number of electronic units,including sensors, processors, etc, has led to great challenges in traditional wire-basedconnection: not only does it increase the overall vehicle weight, it may alsosignificantly reduce system reliability due to poor connections. In-vehiclecommunication and network technologies, emerged in last decades, have provided aneffective solution in connecting in-vehicle electronic units and formed an efficient yetreliable network, which may reduce dramatically vehicle weight with more availablespace, and more importantly, improve electronic system reliability. It has also made itpossible for effectively and reliably transmitting and sharing large amount of dataamong all subsystems in the vehicle for better control performance.As vehicle electronic control systems have advanced from simple body controlto more complex chassis and powertrain controls, and even full vehicle control andintegration, the requirements on electronic controls become more and more stringent,which leads to more stringent requirements on in-vehicle data communication. On theother hand, the large variation of electronic control systems with different functionalrequirements have made it clear that there is no single communication technologysuitable for all different applications, especially under industrial cost constraints.Based on the scientific research project of the advanced automotive electroniccontrol platforms and the electric vehicles advanced chassis and vehicle controlsystem, a detailed analysis of the functions of the electronic control system and areasonable classification layout, design the hybrid vehicle integration with thestructure of the controller and the central gateway communication network. In themeantime, communication capability of the network is tested in the text. The result isused for optimizing the design of the communication performance. The networktopology and transmission performance are both optimized. Also proposed acombined method of communication network control system development and testingof model-based control systems. The networks can improve communication reliabilityof virtual simulation and provide an initial foundation for the subsequent design anddevelopment.The article also cited some application examples of the advanced automotivecontrol integrated systems in communications network. Through three stage of testingincluding virtual simulation testing, real-time simulation platform testing consisted ofhardware, software and real drivers and field test, an automotive electronic controlsystem development test procedure is complete. The good car control performanceshows that the communication performance based on the demand of control performs well, and has strong feasibility and applicability to meet more stringent future vehiclecommunications needs.