摘要
针对混凝土泵车泵送液压系统结构复杂,故障发生概率、故障机理和故障程度具有模糊性的特点,提出了基于T-S模糊故障树的泵送液压系统故障诊断方法。该方法用模糊数描述液压元件和系统的故障概率,解决了故障概率的不确定性;用T-S模糊门描述事件间的联系,解决了故障机理和事件联系的模糊性;用模糊数描述故障的严重程度,考虑了故障程度对系统的影响。将该方法运用到了混凝土泵车泵送液压系统的故障诊断中,取得了较好的效果。
According to the characteristics of complicated structure as well as fuzzy failure probabilities,mechanism and degree of the hydraulic system of concrete pump truck,this paper proposed a fault diagnosis method of hydraulic system based on T-S fuzzy fault tree analysis.This method described failure probability of hydraulic components and system with fuzzy numbers,solved the problem of uncertainty of failure probability.It described connection between events using T-S fuzzy gate,solved the problem of fuzziness of connection between failure mechanism and events.It described failure degree with fuzzy numbers,considered the influence of failure degree on system.Applications of this method in fault diagnosis of hydraulic system are introduced in combination with an example of failure analysis of hydraulic system.
出处
《计算机应用研究》
CSCD
北大核心
2012年第2期561-564,568,共5页
Application Research of Computers
基金
国家"863"计划资助项目(2008AA042801
2008AA042802)
湖南省重点学科建设项目
长沙理工大学重点学科建设项目(08-007)
