Modeling and analysis of piezoelectric cantilever-pendulum system for multi-directional energy harvesting. (February 2017)

• Record Type: Journal Article
• Authors: Xu, Jiawen; Tang, Jiong
• Other Names: Karami Amin guest-editor.; Harne Ryan guest-editor.; Roundy Shad guest-editor.
• Is Part Of: Journal of intelligent material systems and structures. Volume 28:Number 3(2017)
• Page Start: 323
• Page End: 338
• Publication Date: 2017-02
• Subjects: piezoelectric energy harvesting -- multi-directional energy harvesting -- 1:2 internal resonance -- energy interchange -- dynamic magnifier; Smart materials -- Periodicals; Intelligent control systems -- Periodicals; Artificial intelligence -- Periodicals; Matériaux intelligents -- Périodiques; Commande intelligente -- Périodiques; Intelligence artificielle -- Périodiques; 620.11
• DOI: 10.1177/1045389X16642302
• Languages: English
• ISSNs: 1045-389X

Abstract

Piezoelectric cantilevers are widely used in vibration energy harvesting. Simple cantilever-based harvesters are mostly unidirectional. In this article, we develop a cantilever-pendulum system that can harvest vibratory energy of excitations from an arbitrary direction. The new design consists of a traditional piezoelectric cantilever with a pendulum attached to the tip. It is shown analytically and experimentally that with proper parametric combination this system can induce modal energy interchange between beam vibration and pendulum motions due to 1:2 internal resonance, which ultimately yields multi-directional energy harvesting by a single cantilever. The underlying mechanisms of this design are analyzed in detail.