基于观测器的离散互联系统的故障诊断  

Observer-based fault diagnosis of discrete interconnected systems

作　　者：奚晓晔 赵剑飞[1,2] 刘廷章 严利民[1,3] 潘建 Xi Xiaoye;Zhao Jianfei;Liu Tingzhang;Yan Limin;Pan Jian(School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China;Shanghai Key Laboratory of Power Station Automation Technology, Shanghai 200072, China;Microelectronics R＆D Center, Shanghai University, Shanghai 200072, China;Huaiyin Normal University, Huaian 223300, China)

机构地区：[1]上海大学机电工程与自动化学院,上海200072 [2]上海市电站自动化技术重点实验室,上海200072 [3]上海大学微电子研究与开发中心,上海200072 [4]淮阴师范学院,淮安223300

出　　处：《仪器仪表学报》2018年第3期167-178,共12页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(6173190);淮安市科技项目重点研发计划(HAG201607)项目资助

摘　　要：研究了一类不确定离散互联系统的故障诊断问题。将改进的快速自适应估计（FAFE）算法应用到了离散互联系统的故障估计中,设计了分布式故障观测器。由于采用了改进的FAFE算法,在设计过程中可以避免计算原来FAFE算法需要的约束条件,从而解决了系统中带有不确定参数时这种约束条件难以计算的问题。同时改进的FAFE算法可以保持原来算法的精度。基于H∞鲁棒稳定性理论,证明了观测器的故障估计误差和状态估计误差是鲁棒稳定的且满足H∞性能指标。最后,在仿真中考虑了多个故障情形,并通过实例证明了本理论和方法的正确性。This work studies the fault diagnosis method for discrete interconnected systems with uncertain parameters.The improved fast adaptive fault estimation（FAFE） algorithm is applied to the fault estimation for the discrete interconnected systems,and distributed fault observer is designed.The constraints of the original FAFE algorithm can be avoided in the design process in the improved FAFE algorithm.As a result,the system with uncertain parameters can also be calculated.Besides,the improved FAFE algorithm can guanrentee the accuracy of the original algorithm.Finally,various fault situations are considered in the simulation.

关 键 词：互联系统 故障诊断 分布式观测器 线性矩阵不等式 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] TH17[自动化与计算机技术—控制科学与工程]