机载液压系统具有余度降级、故障检测、隔离等动态时序过程,传统基于两元可靠性模型很难描述其动态行为和性能降级过程。针对这一问题,采用分层聚类和广义随机Petri网相结合建立了机载液压系统可靠性模型。利用该模型,详细分析了故障检测装置的故障检测率对系统可靠性的影响。分析结果表明,由于故障检测装置故障检测率的影响,机载液压作动系统除了完好状态和正常故障状态,还存在着潜在故障状态和致命危险状态。在实际机载液压系统可靠性设计中,应合理配置系统可靠性参数,使得飞机处于致命危险状态的概率尽可能小。
Many kinds of dynamical processes (such as redundancy degradation, fault detection, and fault isolation) exist in an aircraft hydraulic actuator system (AHAS). This makes it difficult for the traditional reliability analysis based on a two-state model to describe its dynamic behaviors and performance degradation processes. To deal with the issue, this paper combines hierarchical clustering and generalized stochastic Petri nets (GSPN) to build up a reliability model of AHAS. Based on this model, the effect of the fault detection rate of the fault detection devices in AHAS is discussed in detail. The analysis shows that due to this effect, there exists a potential failure state and the state of fatal failure in an aircraft hydraulic actuator system in addition to the operational state and normal failure state. Therefore, in actual reliability design for an aircraft hydraulic system, the rational allocation of system reliability parameters should be designed carefully to ensure that the probability of an aircraft in mortal danger is reduced to the minimum.
[1] 王灿, 马瑞卿, 谭博, 等. 直流电动舵机伺服作动系统研制[J]. 微特电机, 2008(10): 25-27. Wang Can, Ma Ruiqing, Tan Bo, et al. Design of DC electric steering engine servo actuator system [J]. Small & Special Electrical Machines, 2008(10): 25-27. (in Chinese)
[2] 王少萍. 工程可靠性[M]. 北京:北京航空航天大学出版社, 2000. Wang Shaoping. Engineering reliability [M]. Beijing: Beihang University Press, 2000. (in Chinese)
[3] 侯晨光, 张伟, 袁朝辉. 余度伺服作动系统可靠性分析[J]. 飞机设计, 2006(3): 68-71. Hou Chenguang, Zhang Wei, Yuan Zhaohui. Reliability analysis of servo-actuation systems for civil aircraft [J]. Aircraft Design, 2006(3): 68-71. (in Chinese)
[4] 湛从昌, 李成, 卢明, 等. 液压系统可靠性最优化原则与冗余技术 [J]. 机械工程师, 2010(2): 43-44. Zhan Congchang, Li Cheng, Lu Ming, et al. The reliability optimization principle of the hydraulic system and redundancy technique[J]. Mechanical Engineer, 2010(2): 43-44. (in Chinese)
[5] 朱晓枫. 液压系统可靠性保证措施及实现[J]. 兵工自动化, 2008, 27(5): 74-76. Zhu Xiaofeng. Guarantee and implementation of reliability of the hydraulic systems [J]. Ordnance Industry Automation, 2008, 27(5): 74-76. (in Chinese)
[6] 郑天. 液压健康管理系统可信性理论与分析方法研究. 北京: 北京航空航天大学自动化科学与电气工程学院,2009. Zheng Tian. Dependability theory and analysis methodology research on hydraulic health management system . Beijing: School of Automation Science and Electrical Engineering, Beihang University, 2009. (in Chinese)
[7] 杨怀洲,李增智. 基于 GSPN 的Web 服务组合与性能分析[J]. 计算机工程, 2009, 35(22): 1-3. Yang Huaizhou, Li Zengzhi. Web service composition and performance analysis based on GSPN [J]. Computer Engineering, 2009, 35(22): 1-3. (in Chinese)
[8] 苏春. 基于GSPN模型的系统动态可靠性仿真研究[J]. 中国机械工程, 2006, 19(1): 1-5. Su Chun. Simulation research on system dynamic reliability based on general stochastic Petri net [J]. China Mechanical Engineering, 2006, 19(1): 1-5. (in Chinese)
[9] 马增治, 王龙山, 高洪. 基于GSPN制造系统工作流建模及性能分析[J]. 机械设计与制造, 2008(11): 102-104. Ma Zengzhi, Wang Longshan, Gao Hong. Modeling and performance analysis on manufacture system workflow based on GSPN [J]. Machinery Design & Manufacture, 2008(11): 102-104. (in Chinese)
[10] 钟小军, 汪雄, 董鹏, 等. 基于广义随机Petri网GSPN的系统安全性研究[J]. 海军工程大学学报, 2007, 19(3): 56-61. Zhong Xiaojun, Wang Xiong, Dong Peng, et al. Research on generalized random petri net GSPN-based methods of safety analysis [J]. Journal of Naval University of Engineering, 2007, 19(3): 56-61. (in Chinese)
[11] Zhu L Z, Li Y C. Reliability analysis of component software based on stochastic petri nets //International Conference on Computer and Information Science. 2007: 296-301.
[12] Vitali V. Modeling multiphased missions using stochastic petri nets with aging tokens //RAMS2004. 2004: 232-236.
[13] Karama K. Fault-tolerant system dependability—explicit modeling of hardware and software component-interactions [J]. IEEE Transactions on Reliability, 2000, 49(4): 363-376.
[14] 林闯. 随机Petri网和系统性能评价[M]. 北京:清华大学出版社,2000. Lin Chuang. Stochastic petri nets and system performance evaluation [M]. Beijing: Tsinghua University Press, 2000.(in Chinese)
[15] 苏春, 沈戈. 基于广义随机Petri网的系统可靠性建模与仿真软件开发[J]. 中国制造业信息化, 2007, 36(9): 45-48. Su Chun, Shen Ge. Development for system reliability modeling and simulation based on generalized stochastic petri net (GSPN)[J]. MIE of China, 2007, 36(9): 45-48. (in Chinese)
CJA