Modelling of Mechanical Nonlinearity in an Electromagnetic Vibration Energy Harvester Using a Forced Duffing Equation
Keyword(s):
This work reports on the modelling and experimental validation of a bi-axial vibration energy harvesting approach that uses a permanent-magnet/ball-bearing arrangement and a wire-coil transducer. The harvester’s behaviour is modelled using a forced Duffing oscillator, and the primary first order steady state resonant solutions are found using the homotopy analysis method (or HAM). Solutions found are shown to compare well with measured bearing displacements and harvested output power, and are used to predict the wideband frequency response of this type of vibration energy harvester. A prototype harvesting arrangement produced a maximum output power of 12.9 mW from a 12 Hz, 500 milli-g (or 4.9 m/s2) rms excitation.
2020 ◽
pp. 1045389X2097547
2013 ◽
Vol 404
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pp. 635-639
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2013 ◽
Keyword(s):
2020 ◽
pp. 1045389X2096605
2013 ◽
Vol 25
(13)
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pp. 1605-1613
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2016 ◽
Vol 28
(5)
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pp. 578-594
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