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Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (10): 2070-2079.doi: 10.3969/j.issn.1000-1093.2019.10.012

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Research on Evaluation Method for Testability Index and Modeling of Missile System Based on GSPN

ZHAI Yuyao, SHI Xianjun, L Jiapeng   

  1. (Naval Aviation University, Yantai 264001, Shandong, China)
  • Received:2018-12-07 Revised:2018-12-07 Online:2019-12-18

Abstract: A modeling method based on generalized stochastic petri net (GSPN) is proposed for the determination of missile testability indexes. Based on the GSPN model of three-dimensional structure of missile system, the planar GSPN model of each subsystem is taken as the research object, and the fault detection and maintenance process of missile system are analyzed. The missile system failure mode is classified according to the national military standard. The reachable marking graph based on GSPN model is isomorphic to the embedded Markov chain, the real state set and the disappeared state set are used to characterize the change of the library, and the isomorphic method is used to solve the testability indicators. Taking a certain missile subsystem as an example, the testability indicators were evaluated, and 92% of fault detection rate and 90% of isolation rate were obtained. The effectiveness of the proposed modeling method and corresponding algorithms are verified by using the testability indicators. Key

Key words: missilesystem, detectionandfaultdiagnosis, testability, generalizedstochasticpetrinet, Markovchain, isomorphicmethod

CLC Number: