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Comparison between H2 and H∞ Optimal Control Solutions for a Combined Energy and Attitude Control System

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Abstract:

The paper focuses on applying optimal control solutions to combined energy storage and attitude control system (CEACS) under different reference missions. In previous researches, the proportional-integral-derivative (PID) control method, the PID-active force control method and H2 control were tested for CEACS and achieved its mission requirement. However, problems such as the in-orbit system uncertainties affect the PID control performances. Thus, two optimal control methods, H2 and H∞ controls are proposed and tested on CEACS under different mission scenarios to improve its pitch attitude accuracy. Results show that both H2 and H∞ are able to achieve the reference mission requirement even under the influence of uncertainties (non-ideal). Moreover comparison between H2 and H∞ shows the H2 is a better control option for CEACS in terms of disturbance rejection.

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Periodical:

Applied Mechanics and Materials (Volume 225)

Pages:

464-469

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.225.464

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Online since:

November 2012

Authors:

Ban Ying Siang, Renuganth Varatharajoo

Keywords:

Attitude Control, CEACS, H2 Control, H∞ Control, Optimal Control

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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