5Ye, Zhiquan; M a, Hanomin; BaoNengsheng; Chen, Yan: Ding, Kang.Stru- cture dynamic analysis of a horizontal axis wind turbine system using a modal analysis method[J].Wind Engineering,2001,25(4) :237-248.
6S.Taylor.Lumped constants method for the prediction of the vibration char- acteristics of machine tool Structures. Proc[J].5 th Int. MTDR Conf, 1964.