基于δ算子的格形故障检测滤波器  

DELTA OPERATOR-BASED LATTICE FAULT DETECTION FILTER

作　　者：李渭华[1] 萧德云[1] 方崇智[1] 

机构地区：[1]清华大学自动化系

出　　处：《自动化学报》1994年第4期413-419,共7页Acta Automatica Sinica

基　　金：国家"八五"科技攻关资助

摘　　要：本文基于δ算子构造了Ｈｉｌｂｅｒｔ空间中的信号向量，推导了系统的输入输出关系，得出了前向和后向预测误差向量的表达式．借助格形滤波器理论导出了故障残差序列的递归算法，从而设计出故障检测滤波器．将该滤波器与自适应噪声抵消技术相结合，实现了对被噪声污染信号的故障实时在线检测．最后，仿真实验验证了这种故障检测方法的有效性．In this paper, based on Delta Operator, signal vectors of Hilbert space are constructed, an input-output model is derived, and both the forward and backward prediction error vectors are described. With the help of Lattice filters, recursive algorithms for generating time-updated as well as order-updated residual series are formed, so that a fault detection filter is designed. Combined with the approach of adaptive noise canceling, real time, on-line fault detection is carried out. Finally.simulating experiments show that this fault detection method is effective.

关 键 词：故障检测 Δ算子 格形滤波器 

分 类 号：TN713.107[电子电信—电路与系统]