Dynamic Mass of a Reaction Wheel Including Gyroscopic Effects: an Experimental Approach

Addari, D, Aglietti, Guglielmo and Remedia, Marcello (2016) Dynamic Mass of a Reaction Wheel Including Gyroscopic Effects: an Experimental Approach AIAA Journal, 55 (1). pp. 274-285.

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Abstract

In recent years, driven by the increasingly stringent stability requirements imposed by some satellites’ payloads (e.g., the new generation of optical instruments), the issue of accurate onboard spacecraft microvibration modeling has attracted significant interest from engineers and scientists. This paper investigates the microvibration-induced phenomenon on a cantilever-configured reaction wheel assembly including sub- and higher harmonic amplifications due to modal resonances and broadband noise. A mathematical model of the reaction wheel assembly is developed and validated against experimental test results. The model is capable of representing each configuration in which the reaction wheel assembly will operate, whether it is hard mounted on a dynamometric platform or suspended free–free. The outcomes of this analysis are used to establish a novel methodology to retrieve the dynamic mass of the reaction wheel assembly in its operative range of speeds. An alternative measurement procedure has been developed for this purpose, showing to produce good estimates over a wide range of frequencies using a less complex test campaign compared with typical dynamic mass setups. Furthermore, the gyroscopic effect influence in the reaction wheel assembly response is thoroughly examined both analytically and experimentally. Finally, to what extent the noise affects the convergence of the novel approach is investigated.

Item Type:	Article
Subjects :	Electronic Engineering
Divisions :	Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :	Name Email ORCID Addari, D Aglietti, Guglielmo g.aglietti@surrey.ac.uk Remedia, Marcello m.remedia@surrey.ac.uk
Date :	31 August 2016
DOI :	10.2514/1.J055398
Copyright Disclaimer :	Copyright 2016 American Institute of Aeronautics and Astronautics
Related URLs :	Publisher
Depositing User :	Symplectic Elements
Date Deposited :	08 Jul 2016 15:29
Last Modified :	16 Jan 2019 17:05
URI:	http://epubs.surrey.ac.uk/id/eprint/811152

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