The identi"cation of the dynamic characteristics of linear systems is now widely used and interest in non-linear systems has increased. The objective of this paper is to demonstrate the performance of the restoring force surface method as far as the identi"cation of non-linear systems is concerned.
IDENTIFICATION OF A NON-LINEAR ELECTROMAGNETIC SYSTEM: AN EXPERIMENTAL STUDY
β Scribed by S.-C. Chang; P.-C. Tung
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 320 KB
- Volume
- 214
- Category
- Article
- ISSN
- 0022-460X
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β¦ Synopsis
This paper is concerned with the technique of identifying a non-linear electromagnetic system experimentally based on the principle of harmonic balance and the curve fitting method. The system under investigation is a symmetric rotor suspended by a spring device and excited by an electromagnet of a magnetic bearing. Particular emphases are placed on the identifiability of such a technique for this system and how to improve the modelling accuracy. The traditional identification technique is modified in order to successfully identify this system possessing highly non-linear characteristics. The resulting non-linear model has been proven to be in agreement with the experimental data. The knowledge gained from these studies are presented and discussed thoroughly.
π SIMILAR VOLUMES
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