典型液压系统故障诊断与隔离方法研究  

Research on Fault Detection and isolation method for Typical Hydraulic System

作　　者：张丽霞 冯辅周 刘相波 王敏[2] Zhang Lixia;Feng Fuzhou;Liu Xiangbo;Wang Min(Department of Vehicle Engineering, Academy of Army Armored Force Engineering, Beijing 100072, China;China North Vehicle Research Institute, Beijing 100072, China)

机构地区：[1]陆军装甲兵学院车辆工程系,北京100072 [2]中国北方车辆研究所,北京100072

出　　处：《系统仿真学报》2018年第5期1818-1825,共8页Journal of System Simulation

基　　金：国家自然科学基金(51205407);军队科研项目(2015ZB20)

摘　　要：针对综合传动装置液压系统非线性、不连续和多耦合等工作特性导致的故障检测难、故障隔离不准确等问题,以某型综合传动装置变矩器补偿支路的结构和工作原理为基础,研究了变矩器补偿支路的键合图和诊断建模方法,建立了全局解析冗余关系(Global Analytical Redundancy Relations,GARRs)和故障特征矩阵(Fault Signature Matrix,FSM)的对应关系,准确实现了故障的检测和隔离。通过仿真实验验证了不同故障下的解析冗余关系的变化规律,说明了采用GARRs方法进行混合系统的故障诊断与隔离(FDI)设计和应用的可行性。该方法为新型装备关键系统的传感器优化配置与现役装备的测试性增长提供了新技术。The integrated transmission device possesses some inherent characteristics of the multiple working modes, discontinuity, multi-coupling, which lead to problems such as the fault detection difficulty and fault isolation inaccuracy. Analyzed in detail the structure and working principle of torque converter compensation circuit, the bond graph modeling and diagnosis methods were studied. Then the relationship between global analytical redundancy and fault characteristic matrix is established, which accurately accomplishes the fault detection and isolation. Finally, the rules between the analytical redundancy relations and different faults are verified by simulation experiments, which indicate that the design and application of FDI based on GARRs method is feasible for the hybrid system. This method provides a new technology for the sensors optimization configuration and the testability growth for the new equipment.

关 键 词：解析冗余关系 故障特征矩阵 故障诊断与隔离 变矩器补偿支路 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]