磁流变液制动器系统区间动态可靠性分析  

Interval dynamic reliability analysis of magnetorheological fluid brake system

作　　者：杨恒[1] 张宇鹏 杨鹏凯 李淑君[1] 董青[1] 王震 YANG Heng;ZHANG Yupeng;YANG Pengkai;LI Shujun;DONG Qing;WANG Zhen(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Xuzhou Xugong Energy Equipment Co.,Ltd.,Xuzhou 221000,China)

机构地区：[1]太原科技大学机械工程学院,山西太原030024 [2]徐州徐工能源装备有限公司,江苏徐州221000

出　　处：《哈尔滨工程大学学报》2025年第2期301-308,319,共9页Journal of Harbin Engineering University

基　　金：国家自然基金项目(52105269);山西省回国留学人员科研项目(2020-123);重庆市科技创新专项项目(CQSJKJ2019014)。

摘　　要：针对磁流变液制动器结构冗余、失效数据少且动态失效等问题,本文引入动态故障树和区间理论,提出一种区间动态故障树的磁流变液制动器系统可靠性分析方法。融合区间理论和动态故障树,提出区间动态故障树方法,并推导了区间动态故障门和区间动态故障树重要度求解方法;分析和定义了磁流变液制动器的故障模式影响及危害性和严酷度等级,同时,建立了磁流变液制动器的系统动态故障树;以某新型多槽式磁流变液制动器为例开展了可靠性和重要度分析,验证了方法的可行性和与产品失效的一致性。研究为磁流变液制动器的推广应用和优化和改进优化提供了理论依据。A reliability analysis method for magnetorheological fluid brake systems is proposed,incorporating dynamic fault trees and interval theory to address issues such as structural redundancy,limited failure data,and dynamic failure of magnetorheological fluid brakes.Initially,the interval dynamic fault tree method is proposed by integrating interval theory with dynamic fault trees,deriving the method for solving interval dynamic fault gates and assessing the importance of interval dynamic fault trees.Subsequently,the impact,hazards,and severity levels of the failure modes of the magnetorheological fluid brake are analyzed and defined,leading to the establishment of a dynamic fault tree for the brake system.Finally,taking a new type of multislot magnetorheological fluid brake as a case study,a reliability and importance analysis is conducted,demonstrating the feasibility of the method and its alignment with product failure data.The research provides a theoretical foundation for the promotion,application,optimization,and improvement of magnetorheological fluid brakes.

关 键 词：磁流变液制动器 区间理论 动态故障树 MARKOV链 二元决策图(BDD) 模块化分解 系统可靠性 重要度 

分 类 号：N945.17[自然科学总论—系统科学]