Patent ID: 8379225
Filing Date: 2013-02-19
Classification: G01B,G01L,H02K

Abstract:
1. A system for monitoring a relative displacement of a pair of end-winding components, said system comprising: a structure mounted to the pair of end-winding components; a fiber Bragg grating mounted in between the pair of end-winding components to a non-curved surface of the structure, said fiber Bragg grating configured to reflect incident radiation, said reflected radiation having a peak intensity at a respective wavelength based on a strain of the fiber Bragg grating, said strain of the fiber Bragg grating resulting from a strain of the structure due to the relative displacement of the pair of end-winding components; wherein the structure is configured so that the strain produced by the structure limits a magnitude of the strain of the fiber Bragg grating within a predetermined range over a span of the relative displacement of the pair of end-winding components.