计算机科学 ›› 2021, Vol. 48 ›› Issue (11A): 147-153.doi: 10.11896/jsjkx.210300050
吴培培1, 吴兆贤1, 唐文兵2
WU Pei-pei1, WU Zhao-xian1, TANG Wen-bing2
摘要: 随着人工智能技术的进步和人机物融合系统的发展,智能无人车系统成为了新一代人工智能研究的前沿。智能无人车系统根据车辆和环境数据进行实时决策以控制无人车运行,因而该系统具有较高的实时性能要求,对系统实时性的分析是保障系统安全可靠的方法之一。为了对智能无人车系统的实时性能进行分析,以智能无人车变道系统为例,首先使用MARTE模型对智能无人车变道系统进行建模,在系统设计早期就引入性能需求参数;然后,通过模型转换将MARTE模型转化为吸收态马尔可夫链;最后,利用吸收态马尔可夫链的相关理论和公式综合估算了智能无人车系统的实时性能指标,并针对影响整个系统实时性的关键模块进行了分析。实验结果表明,文中所提模型和分析方法可以较好地分析智能无人车系统的实时性能。分析发现系统中智能模块的准确率与响应时间相互制约,在不同的运行场景下需要找到二者之间的平衡点以获得更优的实时性能。
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