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混合動力汽車CAN網(wǎng)絡(luò)優(yōu)先級動態(tài)分配方法
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國家自然科學基金資助項目(60873003)、高等學校博士學科點專項科研基金資助項目(20070359028)和廣東省教育部產(chǎn)學研結(jié)合項目(N2008B090500226)


Method of Priority Dynamic Distribution of CAN Network in HEV
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    摘要:

    在混合動力汽車網(wǎng)絡(luò)結(jié)構(gòu)和消息實時性分析的基礎(chǔ)上,將最早截止期優(yōu)先算法(EDF)引入到網(wǎng)絡(luò)集成協(xié)議設(shè)計中,提出基于EDF調(diào)度的優(yōu)先級分配策略,給出了實現(xiàn)該策略的非均勻分區(qū)編碼方法及可調(diào)度判定條件,指出了該判定條件下的分區(qū)因子無關(guān)性。仿真結(jié)果表明該方法能夠滿足截止期變化范圍較大的CAN消息集傳輸要求,使網(wǎng)絡(luò)具有較高的利用率。

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    Designing message priority is one of the key problems in terms of CAN network integrating in hybrid electric vehicle (HEV). Based on the analysis of structure of automotive network and real-time of message, the EDF algorithm was introduced into the design of system integrating, and the policy of priority designing based on EDF was built. Furthermore, the non-uniform code method and its schedulability condition were described, and the conclusion that before it was presented the partition factor had nothing to do with the schedulability was put forward. The result of the simulation indicated that the method could not only schedule the message set in which the deadline changed a large-scale range, but also had the low network utilization.

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張利,王躍飛,嚴剛,韓江洪,張建軍.混合動力汽車CAN網(wǎng)絡(luò)優(yōu)先級動態(tài)分配方法[J].農(nóng)業(yè)機械學報,2011,42(5):20-23,78. Zhang Li, Wang Yuefei, Yan Gang, Han Jianghong, Zhang Jianjun. Method of Priority Dynamic Distribution of CAN Network in HEV[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(5):20-23,78.

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