Journal of Systems Engineering and Electronics ›› 2018, Vol. 29 ›› Issue (6): 1327-1339.doi: 10.21629/JSEE.2018.06.20

• Reliability • Previous Articles    

Safety analysis of wheel brake system based on STAMP/STPA and Monte Carlo simulation

Jianbo HU1(), Lei ZHENG1,*(), Shukui XU2()   

  1. 1 Equipment Management and Unmanned Aerial Vehicle Engineering College, Air Force Engineering University, Xi'an 710051, China
    2 The 28th Research Institute of China Electronic Technology Group Corporation, Nanjing 210000, China
  • Received:2017-05-15 Online:2018-12-25 Published:2018-12-26
  • Contact: Lei ZHENG E-mail:jian_bo_h@163.com;zhenglei-happy@163.com;xskgfkd@163.com
  • About author:HU Jianbo was born in 1965. He received his B.S. and M.S. degrees from Engineering College, Air Force Engineering University, Xi'an, China, in 1987 and 1990 respectively, and Ph.D. degree from Northwestern Polytechnical University, Xi'an, China, in 1998. From 1998 to 2001, he did his postdoctoral research in Institute of Advanced Process Control, Zhejiang University. Now he is a professor in materiel management and safety engineering, Air Force Engineering University. His research interests include robust adaptive control, flight control system, variable structure control, and safety engineering. E-mail: jian_bo_h@163.com|ZHENG Lei was born in 1987. He received his B.S. and M.S. degrees from Air Force Logistic College in 2010 and 2012, and is currently pursuing his Ph.D. degree in control science and engineering major in materiel management and safety engineering, Air Force Engineering University. Now he is an engineer in Unit 31431 of the PLA. His research interests include airworthiness management, variable structure control, and safety engineering. E-mail: zhenglei-happy@163.com|XU Shukui was born in 1982. He received his M.S. and Ph.D. degrees in control science and engineering major from National University of Defense Technology in 2006 and 2011 respectively. Now he is an engineer in Unit 31431 of the PLA. His research interests include computational photography, computer vision and information fusion. E-mail: xskgfkd@163.com

Abstract:

The wheel brake system safety is a complex problem which refers to its technical state, operating environment, human factors, etc., in aircraft landing taxiing process. Usually, professors consider system safety with traditional probability techniques based on the linear chain of events. However, it could not comprehensively analyze system safety problems, especially in operating environment, interaction of subsystems, and human factors. Thus, we consider system safety as a control problem based on the system-theoretic accident model, the processes (STAMP) model and the system theoretic process analysis (STPA) technique to compensate the deficiency of traditional techniques. Meanwhile, system safety simulation is considered as system control simulation, and Monte Carlo methods are used which consider the range of uncertain parameters and operation deviation to quantitatively study system safety influence factors in control simulation. Firstly, we construct the STAMP model and STPA feedback control loop of the wheel brake system based on the system functional requirement. Then four unsafe control actions are identified, and causes of them are analyzed. Finally, we construct the Monte Carlo simulation model to analyze different scenarios under disturbance. The results provide a basis for choosing corresponding process model variables in constructing the context table and show that appropriate brake strategies could prevent hazards in aircraft landing taxiing.

Key words: safety analysis, landing taxiing, system-theoretic accident model and processes (STAMP) model and system theoretic process analysis (STPA) (STAMP/STPA), feedback control loop, Monte Carlo simulation