Research on error decomposition and tracing of dynamic measurement based on modern signal analysis

A new theory,the dynamic error tracing theory,is put forward,and the modern signal analysis methods are applied to error decomposition and tracing of dynamic measurement. Based on a simple simulation system of dynamic measurement,the decomposition and tracing of the output error of this system are performed by using the Fourier transform and the wavelet transform. The results of the two analysis methods are compared,which shows the advantage and practicablity of the wavelet analysis method in the decomposition and tracing of dynamic error. And the correctness and feasibility of the dynamic error tracing theory are conformed.