Formal verification of SDG diagnosability via symbolic model checking

被引:1
|
作者
Ning N. [1 ]
Zhang J. [1 ]
Gao X.-Y. [1 ]
Xue J. [1 ]
机构
[1] College of Automation, Northwestern Polytechnical University
关键词
Diagnosability; Directed graphic; Signed directed graph model; Symbolic model checking;
D O I
10.3969/j.issn.1001-506X.2011.02.32
中图分类号
学科分类号
摘要
Because of quantitative and nonlinear causal information, diagosability of the signed directed graph(SDG) model needs to be further verified and validated. A formal verification approach to diagnosability via symbolic model checking is proposed. A formal characterization of SDG, as a finite state transition system, is transformed firstly, and a symbolic model verifier (SMV) module is modeled. In the framework of the finite state transition system, a diagnosis function is established, and then the diagnosable definition of a diagnosis condition is defined using the idea of diagnosis context. By means of NuSMV, a coupled SMV module is constructed, and then the SDGD_CSMV algorithm is designed with the computation temporal logic (CTL) definition of diagnosable property. Finally, the practical applicability within a simple water tank SDG model is demonstrated, which proves the validation of the diagnosable definition and SDGD_CSMV.
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页码:390 / 394
页数:4
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