Abstract
The performance of reverse path methods applied to identify the underlying linear model of base-isolated structures is investigated. The nonlinear rubber bearings are considered as nonlinear components attached to an underlying linear model. The advantage of reverse path formulation is that it can separate the linearity and nonlinearity of the structure, extract the nonlinearity and identify the underlying linear structure. The difficulty lies in selecting the nonlinearity function of the hysteretic force due to its multi-valued property and path-dependence. In the thesis, the hysteretic force is approximated by the polynomial series of displacement and velocity. The reverse path formulation is solved by Nonlinear Identification through Feedback of Output (NIFO) methods using least-square solution. Numerical simulation is carried out to investigate the identification performance.
| Original language | English |
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| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 7292 |
| Edition | PART 1 |
| DOIs | |
| Publication status | Published - 2009 |
| Event | Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009 - San Diego, CA, United States Duration: 2009 Mar 9 → 2009 Mar 12 |
Other
| Other | Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009 |
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| Country | United States |
| City | San Diego, CA |
| Period | 09/3/9 → 09/3/12 |
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Keywords
- Hysteresis
- NIFO
- Nonlinear identification
- Reverse path method
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics