Abstract
In this paper a comparison between two order analysis techniques is made, namely a real-time FFT based order analysis using fixed sampling frequency and Vold-Kalman based post-processing order tracking. The measurement was done on a light truck with a V-8 engine and an overdrive automatic transmission, which was run on a dynamometer in a semi anechoic room. A full-throttle run-up was performed under light load condition from 1st to 4th gear through 2nd and 3rd gear. Especially around the gearshift events the results have been compared. The advantages and disadvantages of the two methods are also summarized.