dynamic process simulation
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2021 ◽  
Vol 134 ◽  
pp. 104122
Author(s):  
Bo Liu ◽  
Kun He ◽  
Mei Han ◽  
Xiewen Hu ◽  
Tianwei Wu ◽  
...  

2020 ◽  
Vol 215 ◽  
pp. 115171
Author(s):  
Ingo Thomas ◽  
Bernd Wunderlich ◽  
Steffen Grohmann

2019 ◽  
Vol 272 ◽  
pp. 01037
Author(s):  
Wei PENG ◽  
Erlin LIU ◽  
Lihan CHEN ◽  
Dong ZHAI

The on-the-road fault diagnosis of the urban rail train passenger compartment door is a weak field in the world research. At present, most of the fault diagnosis and monitoring models for door systems are based on the analysis of historical data. Under the background of continuous development and innovation of railroad crossing equipment, it is urgent to study the model of door system suitable for online monitoring and fault diagnosis. The modeling method combining SDG(signed directed graph) diagram and Petri net is adopted. The Petri net with improved conditional fuzzy time constraint is the first layer, and the SDG diagram is the second layer. Through the dynamic simulation and concurrent processing capability of Petri net, the dynamic process simulation of the system is carried out. At the same time, the SDG map and the Petri net are connected by means of standard tables; The SDG diagram is used to construct a hazard identification and fault mining for the causal relationship between related variables in a certain state of the library. Aiming at the urban rail passenger room plug door system, the model is established and the online safety monitoring hidden danger mining process of the model method in the urban rail plug door is analyzed.


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