Modal Parameters Identification of Transmission Tower Based on Improved Stochastic Subspace Identification
In the condition of environmental excitation and the modal parameters can be identified to only use response data. Based on the improved stochastic subspace identification method, can avoid the fitting error from asynchronous samples, which can integrate asynchronous multi-groups response samples into synchronous pulsing response data, Finally, the identification results of different system order number was utilized to construct stable map to acquire more accurate identification and avoid lost root or duplicate root than the conventional method.
X. F. Liu and X. L. Lu, "Modal Parameters Identification of Transmission Tower Based on Improved Stochastic Subspace Identification", Applied Mechanics and Materials, Vols. 229-231, pp. 1072-1076, 2012