Application of electro mechanical stiffness modulation in biomimetic hair flow sensors


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Droogendijk, H. and Bruinink, C.M. and Sanders, R.G.P. and Krijnen, G.J.M. (2012) Application of electro mechanical stiffness modulation in biomimetic hair flow sensors. In: IEEE 25th International Conference on Micro Electro Mechanical Systems, MEMS 2012, 29 January - 2 February 2012, Paris, France (pp. pp. 531-534).

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Abstract:We propose a new electromechanical interfacing scheme to improve the low-frequency response of energy buffering type transducers. The method is based on periodic modulation of the stiffness in the sensory system which allows to up-convert the signals of interest to frequencies where measurement is less troubled by noise or other detrimental effects. We demonstrate this principle by means of capacitive artificial hair flow sensors, where we modulate the rotational spring stiffness by periodic electrostatic spring softening (ESS), such that a replica of the original signal is formed around the modulation frequency. We show that using this replica we gain a substantial improvement of the low frequency signal-to-noise ratio and sensing threshold.
Item Type:Conference or Workshop Item
Copyright:© 2012 IEEE
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/80252
Official URL:http://dx.doi.org/10.1109/MEMSYS.2012.6170232
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