Integrated Control/Structure Design of a Large Space Structure using Structured $\mathcal{H}_\infty$ Control

TL;DR

This paper introduces an integrated control and structure design method for a large flexible space structure, ELMO, using structured $__$ control techniques to optimize payload mass and control performance.

Contribution

It develops a structured $__$ control framework for integrated design of large space structures, combining control and structural optimization.

Findings

Successful application to ELMO with improved payload mass

Enhanced low-frequency disturbance rejection

Maintained bandwidth requirements

Abstract

This study presents the integrated control/structure design of a Large Flexible Structure, the Extra Long Mast Observatory (ELMO). The integrated design is performed using structured $\mathcal{H}_\infty$ control tools, developing the Two-Input Two-Output Port (TITOP) model of the flexible multi-body structure and imposing integrated design specifications as $\mathcal{H}_\infty$ constraints. The integrated control/structure design for ELMO consists of optimizing simultaneously its payload mass and control system for low-frequency perturbation rejection respecting bandwidth requirements.