Madinei, H., Haddad Khodaparast, H., Friswell, M.I. and Adhikari, S. (2016) Improving Performance of MEMS Piezoelectric Harvesters in the Presence of Manufacturing Uncertainties. In: 27th International Conference on Noise and Vibration Engineering, ISMA 2016 and International Conference on Uncertainty in Structural Dynamics, USD2016, Leuven, Belgium, 19-21 Sep 2016, pp. 4379-4390. ISBN 9789073802940
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Abstract
This paper investigates the use of a MEMS energy harvester with adjustable resonance frequency to improve the performance of MEMS harvesters in the presence of manufacturing uncertainties. Model parameters which are subject to considerable variability have been selected and standard Monte Carlo simulation (MCS) is used for uncertainty propagation. It is shown that the manufacturing uncertainty can have significant influence on the performance of the MEMS harvester. This paper proposes the use of an electrostatic device to adjust the resonance frequencies of the system to compensate for the model parameters variability. By applying DC voltages to the electrodes, the samples at which the resonance frequencies are greater than the nominal value can be modified due to the softening effect. On the other hand, applying a follower load to the harvester can create a hardening effect to compensate the effects of uncertainty in the harvester by increasing the resonance frequency.
| Item Type: | Conference Proceedings |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Adhikari, Professor Sondipon |
| Authors: | Madinei, H., Haddad Khodaparast, H., Friswell, M.I., and Adhikari, S. |
| College/School: | College of Science and Engineering > School of Engineering > Infrastructure and Environment |
| ISBN: | 9789073802940 |
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