Design of Reduced-Order Controllers via H∞ and Parametric Optimisation: Comparison for an Active Suspension System

The design of reduced-order controllers under specific performance and structure requirements is dealt in this contribution. Two controllers are designed and compared. The first one was designed using H∞ theory whereas the latter one is designed departing from a parametric-optimisation via a two-sta...

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Bibliographic Details
Published in:European journal of control 2003, Vol.9 (1), p.48-60
Main Authors: Campos-Delgado, D.U., Femat, R., Ruiz-Velázquez, E.
Format: Article
Language:English
Subjects:
Active suspension
Evolution algorithm
H∞ control
Parametric optimisation
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Summary:The design of reduced-order controllers under specific performance and structure requirements is dealt in this contribution. Two controllers are designed and compared. The first one was designed using H∞ theory whereas the latter one is designed departing from a parametric-optimisation via a two-stage algorithm. The time spent by the designer using our second approach is largely reduced. An active suspension system is selected as a case study. The performance of both controllers is tested experimentally in the active suspension set-up. The experimental results show that the parametric-optimisation controller practically meets the desired performance specifications. Meanwhile, the H∞ controller cannot accomplish the imposed constraints just in the low-frequency range.
ISSN:0947-3580
1435-5671
DOI:10.3166/ejc.9.48-60