H∞ control option for a combined energy and attitude control system

• Main Authors: Ying, Siang Ban, Varatharajoo, Renuganth
• Format: Article
• Language: English
• Published: Committee on Space Research 2013
• Online Access: http://psasir.upm.edu.my/id/eprint/28880/1/H%E2%88%9E%20control%20option%20for%20a%20combined%20energy%20and%20attitude%20control%20system.pdf; http://psasir.upm.edu.my/id/eprint/28880/

A combined energy and attitude control system (CEACS) is a hybrid system that uses flywheels to store energy and provide a simultaneous attitude control in satellites. Previous work appeared in Advances in Space Research (ASR) employing the proportional-derivative (PD) control has proven that CEACS works well and achieves its mission requirement. However, the in-orbit system performance uncertainties present a challenge to the CEACS attitude pointing capability. Thus, this paper complements the previous mentioned work, and focuses on employing the H∞ optimal attitude control solution for the CEACS attitude control enhancement. The mathematical model and numerical treatments for the CEACS H∞ control architecture are presented. Numerical results show that a better attitude pointing accuracy at least up to 0.043° can be achieved with the H∞ control method.