中文摘要：

差错察觉和隔离(FDI ) 策划因为分离时间延期系统在这份报纸被建议，它不能仅仅检测而且孤立差错。一个时间延期操作员被介绍解决时间延期系统带的问题。为 FDI 系统的设计和计算被计算机数学工具枫树带，它能容易处理符号的计算。在同等值空间形式的剩余能从系统方程的递归被推出。进一步的尘埃，一个概括剩余集合用同等值空间冗余性的自由被创造。因此，差错察觉和差错隔离被完成了。建议方法被一个数字例子验证了。

英文摘要：

A Fault detection and isolation （FDI） scheme for discrete time-delay system is proposed in this paper, which can not only detect but also isolate the faults. A time delay operator ↓△ is introduced to resolve the problem brought by the time-delay system. The design and computation for the FDI system is carried by computer math tool Maple, which can easily deal with the symbolic computation. Residuals in the form of parity space can be deduced from the recursion of the system equations. Further more, a generalized residual set is created using the freedom of the parity space redundancy. Thus, both fault detection and fault isolation have been accomplished. The proposed method has been verified by a numerical example.