Abstract
Possible approaches to real-time order tracking are discussed. Two methods for real-time order tracking are developed and validated experimentally for the entire audible spectrum. An adaptive heterodyne filter bank is compared to a direct integral transform. The performance of both methods is adequate for usage in an active vibration control (AVC) algorithm. Vold-Kalman filters are not suitable for AVC. The vibration data of three different planetary gearboxes is analyzed using order tracking. While some of the existing research could be reproduced, the data contradicts statements made by several authors. Lastly, the architecture of a novel AVC algorithm is sketched out.
Highlights
The vibration of planetary gearboxes is highly modulated
The goal of this paper is to extend order tracking to real-time and to fast running planetary gearboxes
The methods utilize the characteristic modulation of the vibration excited by a planetary gearbox
Summary
The vibration of planetary gearboxes is highly modulated. An explanation for this has been reported first by McFadden and Smith [1]. Order tracking decomposes the vibration signal into its individual spectral components, often referred to as orders. It is mostly performed off-line using recorded vibration data. Borghesani et al [2] explain how this can be performed using state of the art methods. They categorize the known approaches into three classes: “the resampling methods, the Kalman filter based methods and the transform based methods”. For off-line analysis, resampling remains a popular choice because of its accuracy and robustness
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