项目名称: 汽车下一代高速数据传输网络基础理论研究
项目编号: No.61462015
项目类型: 地区科学基金项目
立项/批准年度: 2015
项目学科: 自动化技术、计算机技术
项目作者: 王义
作者单位: 贵州师范大学
项目金额: 44万元
中文摘要: 汽车下一代高速数据传输总线FlexRay网络控制系统是由许多控制器、执行器、传感器和一些电气设备构成的非常复杂的分布式控制系统,复杂多变的控制任务以分时复用的方式共享网络资源,由于网络中数据流量变化的不规则性以及网络带宽资源的有限性,会造成数据传输的不确定性和数据传输的延时,使得FlexRay车载网络在高速传输数据时系统的控制性能和稳定性能下降,不能保证控制系统的安全性与可靠性。本项目综合考虑控制与调度对汽车下一代FlexRay车载网络工作的可靠性与稳定性的影响,提出自适应控制器理论模型和预测动态调度算法,通过采样当前时刻汽车车载网络的工作状态,预测下一时刻车载网络的运行状态,以在线自适应调节任务工作量的方式来适应车载网络系统中动态变化的负载,提高FlexRay车载网络控制系统工作的可靠性和稳定性。研究结果为汽车今后进一步的网络化、智能化发展提供新的科学资料和理论依据。
中文关键词: 汽车电子;控制系统;数据采集;FlexRay总线;网络性能
英文摘要: The Next generation in-vechicle network FlexRay bus vehicle network control system is a distributed control system that constituted by a number of controllers and electrical equipments. The complex control tasks share FlexRay bus network resources through the way of TDMA. Due to the irregular changes in network data traffic and the limited network bandwidth resources, the control performance and stability of FlexRay bus network system will be declined while the data transfer information network tends to saturation. By considering the control and scheduling influence on real-time and reliability of vehicle FlexRay bus network system, this project proposed the adaptive controller theoretical model and predict dynamic scheduling algorithm. Predicting the network operations of the next time by sample the working status of current time, and adapt to the dynamic changes of the load through online adaptive adjustment the task workload. And improve the real-time and reliability of the control system while a large amount of data is transmitted. Meanwhile avoiding the instability of vehicle network system due to the automotive electromagnetic interference and other factors. The results will provide a new scientific information and theoretical basis for networked, intelligence development of vehicle in the future.
英文关键词: Automotive Electronics;Control System;Data Acquisition;FlexRay Bus;Networked Performance