信息物理系统(CPS)是最近几年才出现的一个新的交叉领域的研究概念,它被普遍认为是计算机信息处理技术史上的下一次革命,将会改变人与现实物理世界之间的交互方式,具有广泛的应用前景。简要介绍了CPS的概念、一些新的特性。研究了CPS实时性方面的最坏执行时间(WCET)分析的组成部分、获取方法和计算算法,并比较了几种算法的优劣,列举了这一领域一些研究进展,讨论了WCET分析这一领域中存在的问题,给出了将来的研究方向。
Cyber physical system(CPS) is a new concept of cross-over research fields in rencent years.It is commonly believed as the next revolution in information technology area.It will change the way of interaction between people and the physical world,and has a bright applied future.Introduce the concept and features of the CPS.Research the WCET analysis of real time task in CPS,compare the several computation means of the WCET,list some research in this field.Discuss the existed problems of WCET analysis,give the future work what is left to do.