SECE-Based Piezoelectric Energy Sensor for the Diagnostics of Timing Belt
Journal
Proceedings of SPIE - The International Society for Optical Engineering
Journal Volume
12043
Date Issued
2022
Author(s)
Abstract
The article presents a novel idea for the fault diagnostics of the timing belt based on developing a piezoelectric energy sensor attached to the synchronized electric charge extraction (SECE) interface. The device is composed of a piezoelectric cantilever beam with a tip magnet impulsively excited by another small magnet attached on the surface of a moving timing belt. As a result, energy is harvested by frequency up-conversion mechanism operated under magnetic plucking. It is observed that the extent to which power harvested from the failing belt is higher than that from the healthy belt, giving rise to the basis for condition monitoring of the timing belt by detecting the output power. In addition, the analysis shows that the power sensitivity to the magnetic distance can be enhanced to 145% by the SECE interface circuit in comparison with the standard (STD) interface circuit. The consequence of it is that the SECE case exhibits a more accurate decision boundary determined by the logistic regression to classify the healthy and flawed states, as confirmed by the experiment. © 2022 SPIE.
Subjects
Fault Diagnostics; Logistic Regression; Piezoelectric Sensing and Energy Harvesting; Self-Powered SECE Circuit; Timing Belt
Other Subjects
Condition monitoring; Decision trees; Frequency converters; Magnets; Piezoelectric devices; Piezoelectricity; Timing circuits; Charge extraction; Extraction circuits; Faults diagnostics; Logistics regressions; Piezoelectric; Piezoelectric energy; Piezoelectric sensing and energy harvesting; Self-powered; Self-powered synchronized electric charge extraction circuit; Timing belts; Energy harvesting
Type
conference paper