What is it about?
Transportation Cyber-Physical System (T-CPS) is a spatio-temporal discrete-continuous hybrid system. But the hybrid T-CPSs have some analysis and modeling problems, especially the problems related to the spatio-temporal characteristics. Existing colored Petri net approaches of traffic control cannot effectively analyze dynamic changes of cyber systems and physical entities in space and time.
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Why is it important?
Cyber-Physical System (CPS), a hybrid system, is the combination of the physical system and the cyber system. This hybrid system achieves a real-time monitor and control of the interconnection among the networks, the physics of the system and the computer components using different technologies
Perspectives
this paper develops the CSTPN theory for the description of the discrete-continuous hybrid T-CPS, and then applies the new CSTPN theory for the development of TICCS. These research theories and methods can not only reveal the inherent spatio-temporal characteristics of T-CPS, but also solve the state space explosion problem using colored tokens sets. Using the modeling and simulation analyses, this study demonstrates that the proposed approaches can effectively handle dynamic traffic interactions from all directions of traffic intersections to reduce the average transit delays and the mean errors. In addition, these theories and methods created have a good validity and practicality for the development of T-CPS.
Hongzhuan ZHAO
Guilin University of Electronic Technology
Read the Original
This page is a summary of: Using Colored Spatio-temporal Petri Nets to Model Traffic Control Cyber-Physical System , IET Software, March 2017, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-sen.2016.0119.
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