礦井機(jī)車無人駕駛系統(tǒng)無線區(qū)段交接過程形式化建模與驗證研究
[Abstract]:The transportation scenarios of mine locomotive unmanned system (UMLUS) mainly include: registration startup, disaster prevention, cancellation, wireless section handover, etc. It is more important that the wireless section handover (WST). WST realizes the safe transfer function of mine locomotive in the adjacent WST section, ensures the locomotive switch unattended, at the same time does not cause locomotive brake, realizes smooth handover. Formal modeling and verification analysis of wireless segment transition process is a method to ensure the security of the system. In this paper, the extended UML model and the hierarchical colored Petri network are used to verify and analyze the wireless segment transition process and its real-time performance to ensure that the design meets the requirements of the system. By combining the semi-formal UML modeling method with the formal Petri net method, this paper designs the WST scene modeling and verification method of UMLUS system based on UML extension model and hierarchical colored Petri net, and uses UML model to model the initial function of WST. Then the hierarchical colored Petri net is used as the verification method of the model, and the boundedness and reachable state space of the model are analyzed and verified by using the tool CPN Tools to generate the state space report. At the same time, aiming at the real-time characteristics of the periodic communication interactive messages in the WST handover, the modeling of UMLUS system based on the time-level colored Petri net model is designed. The communication in the UMLUS process is based on the WLAN mode, and the oriented AP network is arranged on both sides of the track. Switching delay and sudden interruption will occur during locomotive operation. The real-time performance of the process is obtained by simulation.
【學(xué)位授予單位】:合肥工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TD67;TP301.1
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