TTCAN协议静态调度算法研究与仿真  

Simulation and Research on Static Scheduling Algorithm of TTCAN Protocol

作　　者：冯晓东[1] 果艳红[1] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029

出　　处：《计算机仿真》2008年第6期108-112,共5页Computer Simulation

摘　　要：TTCAN已经被广泛应用于汽车控制系统的实时通讯协议。TTCAN协议的研究目标主要是通过优化周期性通讯任务的调度方法,以便满足系统的实时信号传输的要求。针对TTCAN协议周期性和非周期性通讯任务的特点,采用最优调度法研究和改进了基于状态模型的TTCAN调度算法,并且利用Simulink中的Stateflow工具建立了TTCAN静态调度算法的仿真模型,仿真结果较好地验证了改进算法在通信实时性和带宽利用率方面的优势。仿真模型的建立为TTCAN协议的应用研究提供了重要的参考价值。TTCAN is a suitable real -time communication protocol widely used in automobile control systems. The objective of TTCAN research is to meet the requirements of real - time transmission of signal in the control system by optimizing scheduling algorithm of periodic communication task. In the light of the characteristics of periodic and aperiodic signal, research and improvement of the scheduling algorithm based on state model were made by using optimization method in this paper. Finally, simulation model of static scheduling algorithm was implemented by using stateflow tools of Simulink. Simulation results proved that the improved algorithm has the advantage in real time and bandwidth utilization ratio. Simulation model is valuable for the research and application of TrCAN protocol.

关 键 词：时间触发控制器局域网协议 静态调度算法 矩阵周期 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]