This paper reports about practical experience and algorithmic improvements in active isolation of engine induced vibration. The analysed control algorithms are implemented on an experimental setup that resembles the automobile structure of interest. All considered algorithms are of feedforward structure. An important condition of the given application is the availability of a tachometer signal. It provides improvement opportunities for the algorithms, which are discussed. The considered algorithms are compared with respect to performance and computational costs. Three of the four considered feedforward algorithms have been applied successfully at the experimental setup. Of these, especially the parallel adaptive notch structure provided impressively good results regarding stability, degree of suppression and convergence speed. Necessary condition for this is however a cost effective realization of the included sine generators as well as a memory saving implementation of the frequency dependent values AS and DeltaS for the secondary path approximation. These implementation issues as well as a search for possibly better algorithmic configurations, like employment of the adaptive notch filters in cascaded form will be concern of future work.
Application of feedforward structures for isolation of car engine vibration
Verwendung von aufgeschalteten Strukturen für die Schwingungsisolierung des Fahrzeugmotors
2006
8 Seiten, 8 Bilder, 1 Tabelle, 11 Quellen
Conference paper
Storage medium
English
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