Many industrial applications incorporate rotating shafts with fluctuating speeds around a required mean value. This often harmonic component of the shaft speed is generally detrimental, since it can excite components of the system, leading to large oscillations (and potentially durability issues), as well as to excessive noise generation. On the other hand, the addition of sensors on rotating shafts for system monitoring or control poses challenges due to the need to constantly supply power to the sensor and extract data from the system. In order to tackle the requirement of powering sensors for structure health monitoring or control applications, this work proposes a nonlinear vibration energy harvester design intended for use on rotating shafts with harmonic speed fluctuations. The essential nonlinearity of the harvester allows for increased operating bandwidth, potentially across the whole range of the shaft's operating conditions.
A Nonlinear Concept of Electromagnetic Energy Harvester for Rotational Applications
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received March 12, 2018; final manuscript received November 9, 2018; published online February 4, 2019. Assoc. Editor: Alper Erturk.
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Gunn, B. E., Theodossiades, S., and Rothberg, S. J. (February 4, 2019). "A Nonlinear Concept of Electromagnetic Energy Harvester for Rotational Applications." ASME. J. Vib. Acoust. June 2019; 141(3): 031005. https://doi.org/10.1115/1.4042040
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