A Fault Sample Simulation Approach for Virtual Testability Demonstration Test  

作　　者：ZHANG Yong QIU Jing LIU Guanjun YANG Peng 

机构地区：[1]Laboratory of Science and Technology on Integrated Logistics Support,College of Meehatronies Engineering and Automation,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Journal of Aeronautics》2012年第4期598-604,共7页中国航空学报（英文版）

基　　金：National Natural Science Foundation of China(51105369)

摘　　要：Virtual testability demonstration test has many advantages,such as low cost,high efficiency,low risk and few restrictions.It brings new requirements to the fault sample generation.A fault sample simulation approach for virtual testability demonstration test based on stochastic process theory is proposed.First,the similarities and differences of fault sample generation between physical testability demonstration test and virtual testability demonstration test are discussed.Second,it is pointed out that the fault occurrence process subject to perfect repair is renewal process.Third,the interarrival time distribution function of the next fault event is given.Steps and flowcharts of fault sample generation are introduced.The number of faults and their occurrence time are obtained by statistical simulation.Finally,experiments are carried out on a stable tracking platform.Because a variety of types of life distributions and maintenance modes are considered and some assumptions are removed,the sample size and structure of fault sample simulation results are more similar to the actual results and more reasonable.The proposed method can effectively guide the fault injection in virtual testability demonstration test.

关 键 词：fault sample testability demonstration virtual testability test stochastic process statistical simulation Monte Carlo maintenance 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TN790.7[自动化与计算机技术—计算机科学与技术]