Performance Analysis of Switched Flight Control Systems Based on Hidden Markov Model
WANG Rui① LI Yanxiao① SUN Hui① CHEN Zengqiang②
①(College of Information Engineering and Automation, Civil Aviation University of China, Tianjin 300300, China) ②(Computer and Control Engineering College, Nankai University, Tianjin 300071, China)
This paper proposes the performance analysis model of switched flight control systems driven by the digital upsets when electronics devices are subject to electromagnetic environments. Hidden Markov Model (HMM) is used to describe the characteristics of digital upsets and construct the model based on the theory of the electromagnetic interferences. The parameter estimation algorithms of the traditional training method for HMM are sensitive to initial parameters, therefore, this paper proposes a fast initial parameter selection strategy which can also accelerate the training processes. At the end, HMM-based electromagnetic interferences are fed to the performance observation platform for the distributed flight control systems. This paper also compares multiple performance degradation results under different electromagnetic fields from theory and simulation perspectives. Simulation results demonstrate HMM model can characterize the digital electromagnetic upsets more accurately compared to the existed digital electromagnetic models, and simulation results of the corresponding performance degradation are consistent with the theoretic results.
王蕊,李彦骁, 孙辉,陈增强. 基于隐马尔可夫模型的切换飞行控制系统性能分析[J]. 电子与信息学报, 2017, 39(4): 989-996.
WANG Rui, LI Yanxiao, SUN Hui, CHEN Zengqiang. Performance Analysis of Switched Flight Control Systems Based on Hidden Markov Model. JEIT, 2017, 39(4): 989-996.
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