| EMI下TTFPS算法传输可靠性的研究 |
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| 引用本文： | 陈曦,吕伟杰,刘鲁源.EMI下TTFPS算法传输可靠性的研究[J].控制工程,2008,15(3):320-323. |
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| 作者姓名： | 陈曦 吕伟杰 刘鲁源 |
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| 作者单位： | 天津大学,电气与自动化工程学院,天津,300072 |
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| 基金项目： | 天津大学校科研和教改项目 |
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| 摘 要： | 为了评价TT-FPS调度算法的传输可靠性,考虑到电磁干扰(EMI)是造成CAN总线产生传输错误、影响传输可靠性的重要因素,首先以泊松分布为EMI干扰模型给出了在EMI下TT-FPS调度算法的概率化最糟糕响应时间计算方法,进而以此为基础给出了TT-FPS算法传输可靠性的计算方法,并通过实例分析验明了在传输性能和传输可靠性方面TT-FPS是一种处于FPS与TTCAN之间的折衷方案。所提出的TT-FPS传输可靠性计算方法已成功用于纯电动汽车CAN总线通讯系统的可靠性评价,取得了良好的效果。
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| 关 键 词： | CAN总线 FPS TT-FPS 传输失败率 |
| 文章编号： | 1671-7848(2008)03-0320-00 |
| 修稿时间： | 2007年11月29 |
Transmission Reliability Analysis on TT-FPS Algorithm Under EMI |
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| CHEN Xi,LV Wei-jie,LIU Lu-yuan.Transmission Reliability Analysis on TT-FPS Algorithm Under EMI[J].Control Engineering of China,2008,15(3):320-323. |
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| Authors: | CHEN Xi LV Wei-jie LIU Lu-yuan |
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| Abstract: | To evaluate the reliability of TT-FPS under EMI,considering that EMI is the main interference leading to fault during the transmission over CAN Bus,the probability WCRT of TT-FPS is calculated based on the Poisson distribution which is used as the EMI model.Then the transmission reliability of TT-FRS based on the probability WCRT is calculated.The analysis of an example shows that TT-FPS balances the performance and reliability of FPS and CAN Bus transmission.The proposed method is applied to the reliability evaluation of CAN communication subsystem of electric vehicle,and good effect is obtained. |
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| Keywords: | CAN Bus FPS TT-FPS transmission failure |
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