AR-based identification and control approach in vibration suppression

Citation
S. Hashimoto et al., AR-based identification and control approach in vibration suppression, IEEE IND AP, 37(3), 2001, pp. 806-811
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Engineering Management /General
Journal title
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
ISSN journal
0093-9994 → ACNP
Volume
37
Issue
3
Year of publication
2001
Pages
806 - 811
Database
ISI
SICI code
0093-9994(200105/06)37:3<806:AIACAI>2.0.ZU;2-3
Abstract
In vibration suppression control with a wide bandwidth for a resonant plant , it is a requisite to identify the plant with high accuracy. However, the more complicated the plant is, the more difficult its system identification becomes. This paper proposes the identification of a modified plant instea d of the original plant. The modified plant is a minor control loop (MCL), considering the original plant, when one of the output values is the contro l feedback. The MCL is designed in order to obtain an optimal damping facto r of the modified plant. Moreover, the modified plant is identified based o n the autoregressive exogenous (ARX) model and the least-squares method. Ba sed on these techniques, it is possible to specify an exact uncertainty bet ween the nominal and identified parameters of the ARX model. Therefore, a r obust vibration suppression control system, which has a wide frequency band , can be systematically designed. The advantages of the proposed design met hod for a two-mass resonant system are demonstrated through simulations and experiments in the cases of the position and speed control.