【摘要】 本文简述了谐波合成法中的自回归模型(AR)模拟出给定风速功率谱的风速时程序列,并验证其与目标谱(Davenport谱)的一致性,从而得到作用在各节点的脉动风荷载时程样本的方法。本文采用谐波合成法,建立了脉动风速时程的AR模型,编辑出脉动风速时程模拟程序,并对某风电机组塔架进行脉动时程分析,验证了该脉动风速时程模拟的可行性与有效性。更多还原

【Abstract】 In this paper, an autoregressive model(AR model) is used to simulate wind speed time series. The spectrum of simulated wind speed time series is found in agreement with the target spectrum, Davenport wind speed spectrum. Samples of the fluctuating wind load on the nodes of a structure are obtained. Using the WAWS, the article builds an AR model to calculate the model order and edit a simulation program. Through the analysis on some wind turbines tower, the feasibility and efficiency of this simulation model is verified.更多还原