Reprinted from Proceedings of the 2001 Noise and Vibration Conference, April 30, 2001. 7 pages. Reprinted with permission from SAE. Paper number 2001-01-1587. Copyright © 2001 SAE International.
NOTE: At the time of publication, the author Charles Birdsong was not yet affiliated with Cal Poly.
A new USB powered portable 4-channel real time Dynamic Signal Analyzer and its automotive applications are described. The design and architecture lend themselves to real time NVH measurements and analysis in the field, in-vehicle or on production lines. Built-in signal conditioning provides for direct sensor power while the embedded DSP provides for signal processing on-board. Performance and implementation of FFT, digital filters and order analyses are presented.