Adaptive Angular-Displacement Vold-Kalman Order Tracking

The paper proposes and implements an adaptive Vold-Kalman filtering order tracking (VKF_OT) approach to improve the original VKF_OT scheme in an adaptive manner for the interpretation and diagnosis of rotary machinery during operation. The paper comprises theoretical derivation and numerical implementation. Comparisons of the improved VKF_OT scheme to the original are accomplished through processing a synthetic signal. Parameters such as the weighting factor and the correlation matrix of process noise, which influences tracking performance, are investigated. The adaptive OT scheme based on the Kalman filter can be computed on-line and implemented as a real-time processing application.