Characteristics of the Vold-Kalman order tracking filter

摘要

This article presents the filter characteristics of the Vold-Kalman Order Tracking Filter. Both frequency response as well as time response and their time-frequency relationship have been investigated. Some guidelines for optimum choice of filterparameters are presented. The Vold-Kalman filter allows for the high performance simultaneous tracking of orders in systems with multiple independent shafts. Using this new filter with multiple tacho references, waveforms as well as amplitude and phasemay be extracted without the beating interactions that are associated with conventional methods. The Vold-Kalman filter provides several filter shapes for optimum resolution and stopband suppression. Orders extracted as waveforms have no phase bias andmay hence be used for playback, synthesis and tailoring.