Implementation of the time variant discrete fourier transform as a real-time order tracking method

Document Type

Conference Proceeding

Publication Date

5-15-2007

Department

Department of Mechanical Engineering-Engineering Mechanics

Abstract

The Time Variant Discrete Fourier Transform was implemented as a real-time order tracking method using developed software and commercially available hardware. The time variant discrete Fourier transform (TVDFT) with the application of the orthogonality compensation matrix allows multiple tachometers to be tracked with close and/or crossing orders to be separated in real-time. Signal generators were used to create controlled experimental data sets to simulate tachometers and response channels. Computation timing was evaluated for the data collection procedure and each of the data processing steps to determine how each part of the process affects overall performance. Many difficulties are associated with a real-time data collection and analysis tool and it becomes apparent that an understanding of each component in the system is required to determine where time consuming computation is located.

Publisher's Statement

Copyright © 2007 SAE International. Publisher’s version of record: https://doi.org/10.4271/2007-01-2213

Publication Title

SAE Technical Papers

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