The closed-loop technique has been demonstrated as a possible configuration to design a vibrometer based upon self-mixing interferometry. The electronic feedback loop allows a better linearity while extending the linearity range of a self-mixing interferometer. A deep analysis of the feedback loop is carried out in order to improve stability and performance through a digital approach. This work describes first the simulation of the closed-loop vibrometer, and then the performance obtained through its implementation on an FPGA based prototype.

Development of a design tool for closed-loop digital vibrometer

MELCHIONNI, DARIO;MAGNANI, ALESSANDRO;PESATORI, ALESSANDRO;NORGIA, MICHELE
2015

Abstract

The closed-loop technique has been demonstrated as a possible configuration to design a vibrometer based upon self-mixing interferometry. The electronic feedback loop allows a better linearity while extending the linearity range of a self-mixing interferometer. A deep analysis of the feedback loop is carried out in order to improve stability and performance through a digital approach. This work describes first the simulation of the closed-loop vibrometer, and then the performance obtained through its implementation on an FPGA based prototype.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/968474
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