The methods are applied to the operational modal identification system of the Runyang Suspension Bridge,which can be used to obtain the modal parameters of the bridge from out-only data sets collected by its structural health monitoring system(SHMS).

The running state recognition is realized from the view of classification.

Also, the process of the experiment and the method of mode identification are discussed in details.

Method of modal identification based on wavelet transform in LTI system under non-stationary random excitation;

A kind of method of modal identification subject to ambient excitation is presented.

A poly-reference time-domain operating modal identification complex exponential method is presented since cross-correlation functions have the same form as impulse response functions.

A method of cross power spectral density between responses is derived and a poly reference modal analysis method using cross power spectral density method in frequency domain is presented in this paper.