基于混合定时调度的车辆AMT控制系统的实时性分析

The Real-Time Analysis Using Blended Timer-Triggered Scheduler for the ECU of Vehicle AMT

基于实时系统理论,对AMT控制系统的时间正确性进行分析.建立的实时模型描述了9个任务的瞬时特征、功能特征、资源特征和互联特征.设计混合定时调度算法,对周期性、准周期性和事件触发型任务进行综合调度,并进行了可调度性验证、时序验证和共享资源验证.与时间片轮询调度算法比较,混合定时调度算法的任务完成时间稳定、处理器利用率高、可扩展性强.

Based on the real-time system theory, the timing correctness of automated manual transmission （AMT） control system was investigated. A model involving nine tasks was established to describe the characteristic on temporal, function, resource and interconnection. Aiming to coordinate various tasks, such as periodical, pseudo-periodical and event-triggered tasks, a blended timer-triggered scheduler was designed. The scheduling simulation shows that the model is rational. Compared with the round-robin scheduler, the proposed scheduling algorithm is feasible and robust.