基于观测器的液压系统健康状态评估方法研究  

Reseach on Hydraulic System's Health State Evaluation Method based on Observer

作　　者：李伟[1] 崔伟成[1] 孟凡磊[1] 刘林密[1] 

机构地区：[1]海军航空工程学院飞行器工程系,山东烟台264001

出　　处：《计算机测量与控制》2017年第4期237-239,共3页Computer Measurement &Control

基　　金：国家部委预研基金项目(9140A27020214JB14436)

摘　　要：为了实时评估液压系统的健康状态,提出了基于观测器的健康状态评估原理,利用解析模型、仿真模型和数据模型及其配合等方法进行液压系统标准模型的建立,联合实际液压系统的监测数据,构建液压系统的状态观测器;将实际系统的相关参数作为输入,实际监测点的输出与标准模型的输出进行特征分析与对比,在数据处理的基础上形成残差及其向量,运用数据分析方法计算系统健康度,并解析各元素及其耦合所映射的故障类型与故障程度,实现液压系统的故障定位与评估;最后,利用某型装备的起竖液压系统进行了应用举例,介绍了模型构建、故障模式与参数选择、残差构成及健康度计算的方法;所研究的状态评估方法对实时评估液压系统,及开展液压系统视情维修具有参考价值。In order to evaluate the heal.th status of the hydraulic system tn real time, an observer-based health assessment principle was put forward. In this principle, the analytic model, simulation model, data model and cooperation method were used to build the hydraulic system standard model, The state observer of hydraulic system is constructed. Combined with the monitoring data of the actual hydraulic system, the state observer of the hydraulic system can be constructed. In the state observer, actual system parameters were used as input da- ta. The output of the actual monitoring point and the output of the standard model were analyzed and compared, and the residual error and its vector were formed by data processing. Then calculate the system health degree, and analysis of the elements and their coupling mapping of the fault type and fault degree, to achieve the fault location and evaluation of hydraulic system. Finally, an example of the vertical hydraulic system of a certain type of equipment was introduced, and the methods of model construction, fault mode and parameter selection, residual composition and health degree calculation were introduced. The method of state evaluation has reference value for real-time evaluation and the maintenance of hydraulic system.

关 键 词：液压系统 状态观测器 健康管理 状态评估 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置]