網(wǎng)絡(luò)控制是客車技術(shù)發(fā)展的趨勢。客車網(wǎng)絡(luò)控制系統(tǒng)設(shè)計(jì)過程中需要對系統(tǒng)層與節(jié)點(diǎn)層的一些關(guān)鍵問題進(jìn)行研究, 以助于提高網(wǎng)絡(luò)控制的性能。文中對控制其局域網(wǎng)CAN 的相關(guān)概念, 如CAN 協(xié)議、幀格式、CAN 控制器操作模式等進(jìn)行辨 析; 對與系統(tǒng)結(jié)構(gòu)設(shè)計(jì)有關(guān)的幀格式選取、標(biāo)識符分配、網(wǎng)絡(luò)結(jié)構(gòu)與實(shí)時(shí)性等進(jìn)行了研究, 并提供了一般分析方法與原則; 對節(jié)點(diǎn)硬件設(shè)計(jì)中的通信器件與傳輸介質(zhì)選取進(jìn)行了分析, 并探討了控制策略在軟件設(shè)計(jì)中的實(shí)現(xiàn)。
關(guān)鍵詞: 客車; CAN; 網(wǎng)絡(luò)控制
Abstr act: Network control is the development trend of passenger car technology. For improving network control performance, it’s necessary to research some key problems in design process of passenger car network control system including system layer and node 、 layer. This paper analyzed correlative conception about CAN (Controller Area Network) such as CAN protocol, frame format and CAN controller operation modes. At system framework design aspect, the author researched frame format selection, identifier allocation, network
framework and real - time performance. General analysis method and principle was to be given. At node design aspect, this paper analyzed how to select communication elements and transmission medium in hardware design and discussed control strategy realization
in software design.
Key Words: Passenger Car , CAN, Network Control