Modeling and Experiment of Electromagnetic Energy Harvester System by Using Dual Moving Mechanical Systems at Low Frequency Range.M. Z. A. Rahim, M. N. H. Hamid, Z. N. M. Yusuf, S. N. M. Soid and M. R. IbrahimMATEC Web Conf., 217 (2018) 02006DOI: https://doi.org/10.1051/matecconf/201821702006