科研之友
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摘要
The time-frequency image ridges can carry much information of system characteristic parameters. The modal parameters can be identified by extracting these image ridges. A kind of wavelet transform identification method to identifying a complex system is presented by means of particle swarm optimization algorithm of the ridges extraction. This paper gives the formulas identifying natural frequencies from a wavelet ridge, and an example applied to the modal parameters identification of designed third-degree-of-freedom system. The results prove the method is precision and effective to a complex system.
- 出版日期2012
- 单位天津城建大学
