AN APPROACH TO PARAMETER IDENTIFICATION FOR A SINGLE-DEGREE-OF-FREEDOM DYNAMICAL SYSTEM BASED ON SHORT FREE ACCELERATION RESPONSE
✍ Scribed by N JAKSIC; M BOLTEZAR
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 255 KB
- Volume
- 250
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
An approach to parameter identi"cation for the single-degree-of-freedom (s.d.o.f.) system is presented. It "ts into the group of parametric system identi"cation methods that use a structured mathematical model. It uses the free acceleration response of the system in order to estimate the parameters of the equation of motion for the model under consideration. The approach has been numerically tested on Du$ng's oscillator with dry friction at di!erent sampling rates of the acceleration time history and at di!erent signal-to-noise ratios (SNR). The experiment has been carried out on an experimental device with the features of Du$ng's oscillator. The validity and advantages of the approach are presented. The results show that this approach o!ers parameter identi"cation with good quality for short time series using only a modest number of data points for a wide range of s.d.o.f. systems.