Naslov
Dynamic analysis and ℋ2 optimisation of a piezo-based tuned vibration absorber

Autori
Zhao, Guoying ; Alujević, Neven ; Depraetere, Bruno ; Sas, Paul

Izvornik
Journal of intelligent material systems and structures (1045-389X) 26 (2015), 15; 1995-2010

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Piezoelectric element; tuned vibration absorber; shunt circuit; H2 optimisation

Sažetak
In this article, a piezo-based tuned vibration absorber is proposed and theoretically analysed. The proposed device consists of a proof mass, a piezoelectric actuator and a resilient element (spring). An equivalent mechanical model where the piezoelectric element is connected to a general circuit composed of a resistor, an inductor and a capacitor in series (RLC) is presented to illustrate the coupling of the electrical components with the mechanical systems. Based on the mechanical replacement model, a C or L circuit can be used to realise a piezo-based tuned vibration neutraliser, while with an RC or RL circuit the piezo-based tuned vibration absorber can be considered as a piezo-based tuned mass damper. For the C and L circuits, tuning strategies are derived to adjust the shunt capacitance and inductance to track the disturbance frequency. In the case of RC and RL shunt circuits, an ℋ2 optimisation criterion is used for tuning the piezo-based tuned mass damper. Closed-form expressions for the optimal tuning parameters are provided in this article.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Elektrotehnika, Strojarstvo

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