推导出一种双通道自适应Ｌａｔｔｉｃｅ滤波器算法，并将它用于动态系统的故障检测。这种故障检测方案不需要建立准确的数学模型，只要根据系统的输入输出数据，利用Ｌａｔｔｉｃｅ滤波器算法生成故障残差序列，再对故障残差序列进行统计检验，可实现动态系统的故障检测。该方法用于一个仿真的直流伺服系统的故障检测，实验效果是满意的。 A two-channel adaptive Lattice filter algorithm is derived and used for fault detection in dynamic systems. The fault detection scheme does not need to establish an accurate mathematical model, as long as the system based on the input and output data, the use of Lattice filter algorithm to generate fault residual sequence, and then the residual fault sequence for statistical testing, dynamic system fault detection. The method is applied to the fault detection of a simulated DC servo system. The experimental results are satisfactory.