Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Engineering
Smart Feedback Control For Fiber-Optics Acoustic Emission Sensor System, Xiangyu Luo
Smart Feedback Control For Fiber-Optics Acoustic Emission Sensor System, Xiangyu Luo
Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research
Optical fiber sensors for ultrasonic detection have become a subject of much research in recent years. In this thesis, a fiber-optic acoustic emission (AE) sensor system that is capable of performing AE detection, even when the sensor is experiencing large quasi-static strains, is first described. The system consists of a smart selection of a wavelength notch to which a distributed feedback (DFB) laser is locked for high sensitivity AE signal demodulation. A smart feedback control unit for the DFB laser, which is the focus of this thesis, is designed and investigated. The smart control ensures that the AE signal is …