液压系统组合协整模型状态监测  

Condition Monitoring of Hydraulic Flap Servo Systems Using Synthesis Cointegration Model

作　　者：鲁帆[1] 陈前[1] 

机构地区：[1]南京航空航天大学航空宇航学院,南京210016

出　　处：《振动．测试与诊断》2011年第4期409-414,531,共6页Journal of Vibration,Measurement & Diagnosis

基　　金：航空一集团航空基金资助项目(编号:01C52018);国家自然科学基金重点资助项目(编号:60234010)

摘　　要：由于利用单个协整关系模型对液压仿真系统进行状态监测研究的过程中存在对多种故障状态监测效力不一致的不足,且无法在状态监测下对多组协整关系的存在进行解释,因此基于协整关系空间提出了故障状态与空间投影关系的观点,解释了系统变量多组协整关系的意义,并利用多组协整关系的线性组合模型来改善单个协整关系模型的状态监测效力。通过在液压仿真系统上的对比研究证实了该方法对多种故障状态具有一致的监测效力。The single cointegration vector model used for condition monitoring does not have uniform power for every faulty condition according to previous research work on a hydraulic flap servo system,and there is lack of explanation for the multi cointegration relations from the view of condition monitoring.To address this problem,a new explanation between condition monitoring and space is given based on the existing cointegration relations.Thereby,a new linear combination model of multi cointegration vectors is proposed to improve the performance of the single cointegration vector model.The comparative study confirms that the new approach has better monitoring power.

关 键 词：协整检验 状态监测 液压舵面伺服控制系统 非平稳 最大熵原理 线性组合 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置]