基于极大代数的MVB网络过程数据通信建模与分析

Modeling and Analysis of MVB Network Process Data Communication Based on Maximum Algebra

采用离散事件动态系统中常用的极大代数方法考虑多功能车辆总线(MVB)网络过程数据的动态行为.先基于过程数据在MVB上通信的过程构建一个数学模型,再通过数学计算和仿真实验分析和验证在引入周期输入控制的条件下,MVB网络过程数据通信的无阻塞条件,解决了过程数据在通信中可能出现的阻塞问题.实验结果表明,过程数据传输系统是否阻塞由过程数据时间矩阵值及总线管理器在通信存储器上读取主帧的时间间隔决定,后者的值大于等于前者的最大值,且整个网络会进入周期为1的周期稳态,有效提高了多功能车辆总线网络过程数据通信的可靠性.

Using the maximum algebra method frequently-used in discrete event dynamic systems,we considered the dynamic behavior of the network process data on a muti-function vehicle bus(MVB).A mathematical model based onthe process data communication on MVB was constructed,the non-block condition of MVB network process data communication was analyzed and verified by mathematical calculation and simulation experiment under the condition of introducingperiodic input control,and the possible blocking problem in process data communication was solved.The experimental results show whether process data transmission system is blocked depends on thevalue of the time matrix of process date and the time interval of bus manager reading main frame on the communication memory,the value of the latter is greater than or equal to the maximum value of the former,the whole network will enter the periodic steady state with a period of 1,which effectively improves the reliability of process data communication of theMVB network.