周期型CAN报文线上延迟建模及分析
首发时间:2010-10-21
摘要:该文建立了周期型实时CAN报文平均线上延迟和最糟糕线上延迟的数学模型,确定了报文的位填充个数,开发设计了CAN通信延迟测试试验平台,并利用该平台通过实测数据验证了数学模型的可靠性。平均线上延迟数学模型和实测情况非常接近,表明平均线上延迟模型具有较高的精确度。最糟糕线上延迟数学模型和实测情况相比具有一定的保守度,表明理论计算模型的可靠性。
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Modeling and analysis of on-line delay in the periodic CAN message
Abstract:A mathematic model of the average and the worst on-line delay of the periodic CAN message is built in this paper. And it makes sure the number of the bit stuffing, designs a test bed to test the delay in CAN communication with which the reliability of the mathematic model is validated. The model of average on-line delay is so approach to the actual measurement, which indicates the precision of the model. The model of the worst on-line delay is conservative to the actual measurement, which indicates the reliability of the model.
Keywords: CAN message periodic on-line delay analysis
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