Mixed H2/Hinfinity Sub-Optimization Approach For Integrated Aircraft/Controller Design

Authors:	Liao Fang, National University of Singapore, Singapore Lum Kai Yew, National University of Singapore, Singapore Wang Jian Liang, Nanyang Technological University, Singapore
Topic:	7.3 Aerospace
Session:	Aircraft Control Analysis and Optimization
Keywords:	integrated aircraft/controller design; optimization; mixed H2/Hinfinity control; polytopic uncertainty; parameter-dependent; linear matrix inequalities.

Abstract

This paper presents a new methodology to solve the optimization problem of integrated aircraft/dynamic output-feedback controller design where both polytopic model uncertainties and multi-missions are considered. This design optimization is based on mixed H2/Hinfinity performance requirement. According to the projection lemma, the integrated design optimization problem is separated into aircraft parameter optimization problem and controller optimization problem. An LMI-based sub-optimization approach is proposed for the aircraft parameter design. Then for the obtained sub-optimal aircraft parameters, an optimization approach is given to solve for the dynamic output-feedback controllers corresponding to different missions.