摘要
复杂追踪(CP)是近期发展起来的一种结合信号统计特性和时序结构的盲源分离新算法,通过找到一个合适的投影方向,使其在该方向投影信号的复杂度最小,从而实现对混合信号的分离。通过CP技术将结构的响应信号分离,得到模态振型和模态响应,进而利用单模技术分析得到的结构模态参数。最后,采用一三层框架数值模型对该方法进行验证,结果表明该算法可以准确有效地识别结构的模态参数。
Complexity pursuit（CP） is a newly developed blind source separation（BSS） of combining the signal statistical characteristics and temporal structure. The complexity of the signal can be reduced to the least by an appropriated project so as to realize the separation of the mixed signal. The structural modal shapes and single modal responses are gained by CP to separate the response signal and then to get the parameter of the structural modal by the single modal analysis. Finally, a numerical model of three-floor frame is used to identify the method, and the result shows that the model can accurately and feasibly identify the structural modal parameter.
出处
《苏州科技学院学报（工程技术版）》
CAS
2016年第2期38-42,50,共6页
Journal of Suzhou University of Science and Technology （Engineering and Technology）
基金
江苏省自然科学基金项目(BK20141180)
江苏省结构工程重点实验室开放课题(Z1405)
江苏省建设系统科技项目(2015ZD77)
关键词
盲源分离
复杂追踪
时间预测
结构模态参数识别
blind source separation
complexity pursuit
temporal predictability
structural modal parameter identification
