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Simulation and experimental investigation of a wide band PZ MEMS harvester at low frequencies

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Abstract

A commercial brass reinforced PZ bimorph cantilever of the type 5H4E was simulated using COMSOL FEM software and then a serious of experimental tests were carried out in a vibration laboratory using a labview of NI make as instrumentation and control system. By using a shaker the cantilever was vibrated and set into acceleration of 0.25 g rms during all stages as this value was considered to be available and acceptable in balanced large rotating machines in industry. Field vibration spectrum analysis was carried out in a power station confirmed that. A band of frequencies ranging from 30 to 109 Hz was experimentally tested by using different perforated steel shims as a proof mass at the end of the cantilever. Values of 63 μW/cm3 at a frequency of 33 Hz for power density, 187 μW for max power, 14.8 V for max OCV, and 8.26 V for max, on load voltage, were obtained. Frequency resolution of 1 Hz was experienced. Trends of the results obtained experimentally and through simulation were comparable.

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Acknowledgments

This research was supported by a grant from Tenaga National Berhad Malaysia through Universiti Tenaga National.

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Authors and Affiliations

  1. Universiti Tenaga Nasional, Kajang, Selangor, Malaysia

    Mohammed Dhia Salim & Hanim Salleh

  2. Ministry of Science and Technology, Baghdad, Iraq

    Dhia Shaker Mohammed Salim

Authors
  1. Mohammed Dhia Salim
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  2. Hanim Salleh
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  3. Dhia Shaker Mohammed Salim
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Correspondence to Mohammed Dhia Salim.

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Dhia Salim, M., Salleh, H. & Mohammed Salim, D.S. Simulation and experimental investigation of a wide band PZ MEMS harvester at low frequencies. Microsyst Technol 18, 753–763 (2012). https://doi.org/10.1007/s00542-012-1453-9

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  • DOI: https://doi.org/10.1007/s00542-012-1453-9

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