TTP/C协议可靠性建模与分析  

Modeling and analysis of TTP/C protocol reliability

作　　者：陈志航 刘涛[1] 陈文[1] CHEN Zhi-hang;LIU Tao;CHEN Wen(School of Electronic Information and Electrical Engineering Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《信息技术》2024年第5期175-181,共7页Information Technology

摘　　要：TTP/C是一种基于TTA架构的高容错总线协议,针对其分布式、多点串行以及基于时间触发等特点,以系统可靠性理论和随机Petri网(SPN)理论为基础,设计一种基于SPN的可靠性分析模型。通过设定相关事件的发生时延,利用PIPE 4.3.0分析软件对该模型求解,得出TTP/C理论上的可靠度。文中提出的模型和仿真方法实现了对传统可靠性分析方法的继承和突破。仿真结果表明,TTP/C总线协议具有较低的故障率,可以满足航天航空控制应用领域的要求。TTP/C is a highly fault-tolerant bus protocol defined based on TTA architecture.According to its characteristics of distributed,multi-point serial,and time-triggered,based on system reliability theory and Stochastic Petri Net(SPN)theory,a reliability analysis model based on SPN is proposed.By setting the occurrence delay of related events,the model is solved by PIPE 4.3.0 analysis software,and the theoretical reliability of TTP/C is obtained.The model and simulation method proposed in this paper accomplish the inheritance and breakthrough of the traditional reliability analysis method.The simulation results prove that the TTP/C bus protocol has a very low failure rate which can meet its requirements in the aerospace control application field.

关 键 词：通信协议 可靠性分析 容错策略 随机PETRI网 PIPE 4.3.0 

分 类 号：TN915.04[电子电信—通信与信息系统]