Reducing jitter during large slews using multifunctional structures for attitude control via torque analysis

Vedant, James T. Allison, Alexander M. Ghosh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Multifunctional Structures for Attitude Control (MSAC) are a class of new attitude control systems that utilize intelligent flexible deployable panels as attitude control actuators. Spacecraft attitude is modified via a repeated cycle of deformations achieved using embedded distributed strain actuators. Previously, MSAC has demonstrated the ability to rotate about a given axis for arbitrarily-large angles using non-holonomic control trajectories. Large attitude slews are achieved by oscillating the panels about two different axes, thereby modifying the mass moment of inertia between different phases of motion. Most control trajectories developed thus far have been based on dynamical models developed using conservation of angular momentum. In this article, the MSAC system model is developed using a torque interaction model, which is then used to design control trajectories that expand system operational envelopes and the pointing stability during slews. This paper concludes with simulation-based validation of the mechanical and control design of the MSAC system that improves system performance by reducing the vibrations introduced during attitude slews by almost 40 dB and increases the operational frequencies to beyond the first harmonic of the deployable panel.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2021 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages1-9
Number of pages9
ISBN (Print)9781624106095
DOIs
StatePublished - 2021
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online
Duration: Jan 11 2021Jan 15 2021

Publication series

NameAIAA Scitech 2021 Forum

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
CityVirtual, Online
Period1/11/211/15/21

ASJC Scopus subject areas

  • Aerospace Engineering

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