Definitions of predictability for Cyber Physical Systems

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• 作者：Beilei SunAuthor Vitae ; Xi Li ; ^{llxx@ustc.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Bo WanAuthor Vitae ; Chao WangAuthor Vitae ; Xuehai ZhouAuthor Vitae ; Xianglan ChenAuthor Vitae
• 关键词：Cyber Physical Systems ; Predictability ; I/O behavior predictability ; Time predictability ; Order predictability
• 刊名：Journal of Systems Architecture
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：63
• 期：Complete
• 页码：48-60
• 全文大小：2270 K

文摘

With the recent proliferation of different types of Cyber Physical Systems (CPS), it is critically important to investigate the predictability of such systems. Along with functional correctness of the components, these systems must also ensure that timing and delay constraints of components are properly for the entire system to behave in a predictable manner in presence of various kinds of uncertainties. While the functional correctness of the CPS components has been investigated in the past, very little is available about the timing issues. The objective of this paper is to conduct an investigation of key issues involved to ensure the predictability of the system, introduce rigorous definitions of performance parameters, and propose metrics for their evaluation and analyze their suitability to be used in the presence of uncertainties in which CPS operate. The results are expected to provide greater insight into the time critical behavior of CPS components.