Research Information System
Mechanical Systems and Signal Processing, vol.244, 2026 (SCI-Expanded, Scopus)
This study presents a novel energy harvesting system based on a perpendicular magnetic coupling of dual cantilever beams, designed to achieve direction-independent excitation under ambient airflow. In contrast to conventional systems with single-axis response, the proposed configuration enables magnetic force transmission from the primary beam to the secondary beam regardless of flow direction, allowing simultaneous energy extraction from both beams. A comprehensive nonlinear dynamic model is developed using Lagrangian mechanics, incorporating piezoelectric coupling, magnetic interaction, and harmonic aerodynamic excitation. The model is supported by finite element analysis to demonstrate the feasibility of integrating the system into a small-scale wind turbine application. A proposed prototype is constructed, and detailed experimental study is conducted. The harvested energy is rectified and successfully used to power low-power electronic devices such as LEDs and temperature sensors. The outcomes confirm the practicality of the proposed dual-beam configuration for self-powered systems operating under variable excitation conditions.