Determination of elastic mode characteristics using wirelessly networked sensors for nanosat launch vehicle control

Author

Rezaei, Roohollah ; Ghabrial, Fady ; Besnard, Eric ; Shankar, Prithvi ; Castro, Jose ; Labonte, Laurent ; Razfar, Mojtaba ; Abedi, Ali

Author_Institution

Dept. of Mech. & Aerosp. Eng., California State Univ., Long Beach, CA, USA

fYear

2013

fDate

7-9 Nov. 2013

Firstpage

1

Lastpage

2

Abstract

This paper presents a simulation study of the realtime determination of the elastic mode characteristics (frequency and displacement mode shape) of a launch vehicle using an array of sensors that measure the local strain along the length of the vehicle. The determination of the frequency and shape of the excited modes is accomplished using the buffered strain data. We assume that the sensed data is obtained from a wirelessly networked array of sensors that brings in additional complexity due to the presence of delays, packet loss and network dynamics. Preliminary results show a high sensitivity of the mode-shape determination algorithm to delays in sensed information.

Keywords

aerospace control; artificial satellites; delays; sensor arrays; space vehicles; wireless sensor networks; buffered strain data; delays; displacement mode shape; elastic mode characteristics; frequency mode shape; mode-shape determination algorithm; nanosat launch vehicle control; network dynamics; packet; sensor array; wirelessly networked sensor array; Delays; Sensor arrays; Shape; Strain; Vehicles; elastic modes; launch vehicle. Control; wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless for Space and Extreme Environments (WiSEE), 2013 IEEE International Conference on

Conference_Location

Baltimore, MD

Type

conf

DOI

10.1109/WiSEE.2013.6737572

Filename

6737572