The synthesis of optimal controllers for vibrational protection of large-scale structures with multiple actuation devices and partial state information is a challenging problem. In this study, the authors present a design strategy that allows computing this kind of controllers by using standard linear matrix inequality optimisation tools. To illustrate the main elements of the new approach, a five-story structure equipped with two interstory actuation devices and subjected to a seismic disturbance is considered. For this control setup, three different controllers are designed: an ideal state-feedback H 8 controller with full access to the complete state information and two static output-feedback H 8 controllers with restricted neighbouring state information. To assess the performance of the proposed controllers, the corresponding frequency responses are investigated and a proper set of numerical simulations are conducted, using the full scale North-South El Centro 1940 seismic record as ground acceleration input. The obtained results indicate that, despite the severe information constraints, the proposed static output-feedback controllers attain a level of seismic protection that is very similar to that achieved by the ideal state-feedback controller with complete state information. ; Peer Reviewed ; Postprint (author's final draft)
Vibration control strategy for large-scale structures with incomplete multi-actuator system and neighbouring state information
2016-02-01
Article (Journal)
Electronic Resource
English
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures , Àrees temàtiques de la UPC::Informàtica::Automàtica i control , Structural control (Engineering) , Buildings--Vibration , Feedback control systems , Structural vibration control , Large-scale control , Partial state information , Static output-feedback control , LMI optimization , Control d'estructures (Enginyeria) , Edificis -- Vibració , Sistemes de control per retroacció
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