ROBUSTNESS ANALYSIS OF A LAUNCHER ATTITUDE CONTROLLER VIA μ-ANALYSIS

摘要

This paper presents a method for analyzing the robustness of attitude control laws of a launcher. The specifications are given in terms of stability and performance requirements and have to be satisfied for a wide range of parametric uncertainties. After a description of the model and associated uncertainties, a method for obtaining a discrete LFT representation, is presented. The robustness analysis of the attitude control for stability specifications and performance specifications is performed via μ analysis. This method enables to cover the whole domain of uncertainties at once and avoids systematic and numerous simulations.