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�������պ����ѧѧ�� 2012, Vol. 38 Issue (1) :111-115    DOI:
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Robust eigenstructure assignment based on μ-analysis applied to flight control law design
Gao Bo, Yang Lingyu, Shen Gongzhang*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� A new robust eigenstructure assignment algorithm was presented to improve the robustness of control law designed by eigenstructure assignment. This algorithm combined parametric eigenstructure assignment with μ-analysis, was based on linear fractional transformation, and then transformed robust eigenstructure assignment problem into a nonlinear constrained minimization problem including all free parameters of the system. In order to reduce the problem complexity, robust eigenstructure assignment with multivariable optimization was divided into two steps with contour graph of robustness index, considering the characteristics of flight control. This algorithm ensures the performance of nominal closed-loop system with parameter constraints, and can improve the robustness with all free parameters of the system and has the advantages of μ-analysis. The simulation results show that this algorithm can satisfy level 1 flying qualities,improve the robustness and reduce the conversation.
Keywords�� eigenstructure assignment   μ-analysis   optimization   robust   flight control     
Received 2010-09-01;

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About author: �� ��(1986-),��,����פ�����,˶ʿ��,gaobo@asee.buaa.edu.cn.
�߲�, ������, �깦�.����μ������³�������ṹ���� ���п��������[J]  �������պ����ѧѧ��, 2012,V38(1): 111-115
Gao Bo, Yang Lingyu, Shen Gongzhang.Robust eigenstructure assignment based on μ-analysis applied to flight control law design[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V38(1): 111-115
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