Penđer, Antonia (2017) Aktivno prigušenje vibracija kod nosivih konstrukcija korištenjem piezoelektričnih elemenata. = Active vibration control in structures using piezoelectric elements. Master's thesis (Bologna) , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Jokić, Andrej.
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Abstract (Croatian)
Zbog nepoželjnog utjecaja vibracija na konstrukcije često se javlja potreba za njihovim prigušivanjem. Aktivno prigušenje podrazumjeva postojanje senzora i aktuatora koji u realnom vremenu mjere odziv i dinamički djeluju na konstrukciju. U zadnje vrijeme, sve je češća upotreba piezoelektričnih materijala u te svrhe. U radu je razrađen model grede na kojoj su raspoređeni piezoelementi. Koristeći metodu konačnih elemenata i osnovne jednadžbe piezoelektirčnih materijala, stvoren je model prikladan za sintezu regulatora namjenjenog minimizaciji utjecaja poremećaja na progibe/zakret grede. Za sintezu se koristi Hinf teorija optimalnog upravljanja koja omogućava oblikovanje željenog odziva sustava u frekvencijskom području upotrebom filtera.
Abstract
Due to the undesirable impact of vibration on the structures in many applications there is a need for introducing appropriate vibration damping. Active damping implies existence of sensors and actuators that in real-time measure response and dynamically affect the structure. Since recently the piezoelectric materials are increasingly used for these purposes. In this work, a dynamical model of an elastic beam with piezoelectric sensors/actuators has been developed. Using the finite element method and the basic equations of the piezoelectric materials the model has been further adapted and made suitable for control synthesis purposes. The considered control goal was to minimize the impact of the external disturbances on beam displacements. For this purpose Hinf optimal control theory has been used.
Item Type: | Thesis (Master's thesis (Bologna)) |
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Uncontrolled Keywords: | Vibracije; Nosive konstrukcije; Optimalno upravljanje; Piezoelektrični senzori/aktuatori; Metoda konačnih elemenata |
Keywords (Croatian): | Vibrations; Bearing structures; Optimal control; Piezoelectric sensors/actuators; Finite element method |
Subjects: | TECHNICAL SCIENCE > Mechanical Engineering |
Divisions: | 900 Department of Robotics and Production System Automation > 910 Chair of Engineering Automation |
Date Deposited: | 12 Jul 2017 11:23 |
Last Modified: | 18 Mar 2020 12:02 |
URI: | http://repozitorij.fsb.hr/id/eprint/7781 |
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