Title :
Modal estimation by FBG for flexible structures attitude control
Author :
Hao Jiang ; van der Veek, B. ; Dolk, V. ; Kirk, D. ; Gutierrez, H.
Author_Institution :
Univ. of Texas at Arlington, Arlington, TX, USA
Abstract :
This work investigates an online mode shape estimation method to estimate the time-varying modal properties and correct IMU readings in real time using distributed strain measurements of FBG sensor arrays. Compared to the notch filter approach, the proposed method removes structural vibration information without adding phase lag or transient dynamics. Numerical simulations on a flexible rocket attitude control and the experiments on a vertical test beam with configurable mass distribution are used for demonstration.
Keywords :
Bragg gratings; aircraft control; attitude control; flexible structures; modal analysis; optical fibres; rockets; sensor arrays; strain measurement; FBG sensor arrays; IMU readings; configurable mass distribution; distributed strain measurements; flexible rocket attitude control; flexible structure attitude control; modal estimation; numerical simulations; online mode shape estimation method; structural vibration information removal; time-varying modal property estimation; vertical test beam; Aerodynamics; Attitude control; Bragg gratings; Rockets; Shape analysis; Vibrations;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2014.130004
