Laser Doppler velocimeter measurement system for dynamic characterization of disks

Jia Wang; Enyao Zhang

doi:10.1117/12.185315

8 September 1994 Laser Doppler velocimeter measurement system for dynamic characterization of disks

Jia Wang, Enyao Zhang

Proceedings Volume 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1994) https://doi.org/10.1117/12.185315
Event: Vibration Measurements by Laser Techniques: First International Conference, 1994, Ancona, Italy

Abstract

A laser Doppler velocimeter (LDV) based on laser heterodyne interferometry is described in this paper and has been used to measure the dynamic characteristics of disks. The digital linear phase low pass filter and differential filter are designed and used in the data processing system. The measurement results on the dynamic characteristics, velocity, acceleration and runout in axial direction of the hard disk at 3600 rpm are given.

Citation Download Citation

Jia Wang and Enyao Zhang "Laser Doppler velocimeter measurement system for dynamic characterization of disks", Proc. SPIE 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (8 September 1994); https://doi.org/10.1117/12.185315

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