基于多阶段抽样技术的随机减量法

Random Decrement Method Based on Multi-stage Sampling

将多阶段抽样技术应用于随机减量法中随机减量信号的提取,用以解决结构振动参数识别中计算量较大的问题。数值算例和工程实例结果表明,该方法可在大大减小计算工作量的同时较准确的识别出结构振动参数。

This research addresses the application problem of m ul ti-stage sampling on random decrement method for parameter identification of a dynamic system.Based on multi-stage sampling,the problem of needing heavy com putation load to produce a stable random decrement signature could be solved in some extent.A simulation example and a project example result indicate the high efficiency of this method to evaluate the quite accurate structural mode parame ters with less computation load.