It will set up ar model, analyze power spectrum, and calculate transfer function and delay time, thus several fundamental problems in the research of robot wrist sensor can be solved.

The effect of time delay unit number on classification precision and the performance of TDNN classifier using three typical aircraft dark room data measured with scale model were studied.

As sinter is a typical time varying and nonlinear system with large delay time, it is difficult to describe the whole process using a mathematical model.