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Order Separation Using Multiple Tachometers and the TVDFT Order Tracking Method
Technical Paper
2005-01-2265
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An automobile and a tracked military vehicle were instrumented with multiple tachometers, one for each drive wheel/sprocket and operated with accelerometers mounted at suspension, chassis, and powertrain locations on the vehicles. The Time Variant Discrete Fourier Transform, TVDFT, order tracking method was then used to extract the order tracks and operating shapes estimated based on each tachometer. It is shown that under some conditions a different operating shape is excited by each of the wheels/sprockets simultaneously. This is due to the asymmetries present in the vehicles. The strengths of the TVDFT order tracking method are shown for this type of analysis, which is difficult due to the closeness, within 0.001 orders, and crossing of the orders. Benefits of using multiple tachometers and advanced order tracking methods become apparent for solving a class of noise and vibration problems.
Citation
Blough, J., "Order Separation Using Multiple Tachometers and the TVDFT Order Tracking Method," SAE Technical Paper 2005-01-2265, 2005, https://doi.org/10.4271/2005-01-2265.Also In
SAE 2005 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V114-6; Published: 2006-02-01
Number: V114-6; Published: 2006-02-01
References
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