Patent ID: 6729186
Filing Date: 2004-05-04
Classification: G01H

Abstract:
A tool for measuring and analyzing the torsional vibration in a vehicle driveline, comprising:a plurality of moveable sensors, including a first sensor at a first location and a second sensor at a second location, for measuring an instantaneous speed at a driveline location and generating a plurality of speed signals, including a first speed signal from said first sensor and a second speed signal from said second sensor, and wherein a plurality of moveable sensor locations, including said first location and said second location, are defined according to a setup attribute; a processor electrically coupled to said plurality of sensors for receiving said plurality of speed signals from said plurality of sensors and for transforming said plurality of speed signals into order domain and for processing said plurality of speed signals into rotational acceleration measurements as a function of harmonic order, said processing including calculating the amplitudes of said rotational acceleration measurements at each of one or more rotational orders; and display means for displaying said amplitudes of said rotational acceleration measurements with their respective rotational orders.