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Correlation Dimension Based Stability Analysis for Cyber-Physical Systems
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DOI：10.1109/TII.2021.3075949.png)
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摘要
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Cyber-physical systems (CPSs) realize the automatic control of entities through computing systems and networks. Stability is an important factor in CPS for system upgrading and troubleshooting. Traditional analysis methods focus on simulation and formal analysis, which have two major limitations: first, the current state information of CPS is difficult to obtain; second, most CPS face the state space explosion problem. These problems can be avoided and a good analysis can be provided based on empirical data. The main work of this article is summarized as follows: first, a phase space reconstruction method is designed to divide the dataset into several subsequences with the same shape; second, we propose a stability analysis method based on correlation dimensions. Results indicate that the proposed approach can obtain a stable correlation dimension. CPS perform better if the correlation dimension is maintained within a certain range; otherwise, a destabilizing factor exists. The proposed stability analysis has less complexity and running time.
Keyword:
Stability analysis
Correlation
Fractals
Informatics
Stability criteria
Analytical models
Reliability
Correlation dimension
cyber-physical systems (CPSs)
stability analysis
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