CAJ | 학술논문

针对汽车车身网络节点日渐增多而低速CAN带宽资源有限的问题，引入减少网络传输数据的数据压缩技术，分析了车身网络信息数据变化特点，提出了基于数据压缩的变化优先( CF)的优化调度算法，介绍了CF算法的数据压缩、解压缩和调度原理，将CF算法应用于汽车车身控制系统设计，理论分析和实验验证的结果表明，该算法可显著降低车身CAN总线负载，改善信息的实时性，提高车身CAN总线的扩展灵活性。
침대기차차신망락절점일점증다이저속CAN대관자원유한적문제，인입감소망락전수수거적수거압축기술，분석료차신망락신식수거변화특점，제출료기우수거압축적변화우선( CF)적우화조도산법，개소료CF산법적수거압축、해압축화조도원리，장CF산법응용우기차차신공제계통설계，이론분석화실험험증적결과표명，해산법가현저강저차신CAN총선부재，개선신식적실시성，제고차신CAN총선적확전령활성。
In view of the contradiction between the ever increasing network nodes in vehicle body and the limited bandwidth resources of low-speed CAN, a data compression technique is introduced to reduce network trans-mission data. Then based on the analysis on the changing features of vehicle body network data, an optimization scheduling algorithm with "changed first" principle is proposed for data compression and is then applied to the con-trol system design of vehicle body. The results of theoretical analysis and experimental verification indicate that the algorithm proposed can obviously reduce the load of vehicle body CAN bus, improve the real time performance of in-formation and enhance the expansion flexibility of vehicle body CAN bus.