Study On The Reason For Difference Of Data-driven And Covariance-driven Stochastic Subspace Identification method
Parameter identification is currently one of the main research topics in the area of structural health monitoring. Stochastic subspace identification method can effectively identify modal parameters of linear structure from structure of ambient vibration. According to difference on the way processing response data, stochastic subspace identification method is divided into data-driven and covariancedriven stochastic subspace identification method, which traditionally is thought to be consistent with each other theoretically and practically. But the fact is that data driven stochastic subspace identification method is different with the covariance driven subspace identification method due to different ways on numerical computation practically. So the study is carried out for the reason why they are different with each other. In the process of analysis, 5-DOF mass-spring-dashpot system is adopted.
modal identification data-driven covariance -driven stochastic subspace identification
Junfeng Xin Weibang Sui Jinlu Sheng
Engineering college, Ocean university of China Qingdao, China Qindao huanghai college Qingdao, China Marine college, Dalian maritime university Dalian, China
国际会议
杭州
英文
356-360
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）