Abstract
In situ measurement of head flying height and attitude using image processing on fringe patterns formed by Michelson interferometry is studied. A wide laser beam is applied to a slider back surface and a disk surface simultaneously to create interferometric fringe patterns on them. Employing the relationships between two fringe patterns, a calculation procedure is formulated to yield slider parallel, pitch and roll displacements. Experimental fringe patterns are taken in a single visual field by a high-speed CCD camera. Then, image processing for higher signal-to-noise ratio, such as smoothing/filtering, amplification and peak line detection is applied to the image data. Additionally, average processing with respect to multiple fringe lines to produce higher accuracy is successfully applied. Measured values of flying height and pitch/roll displacements are confirmed to be in good agreement with calculation data, demonstrating excellent applicability of the present method down to near-contact region.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
