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Sliding mode control based on proportion allocation for over-actuated saucer-shaped aircraft
Zhang Youan, Wu Yinsheng*
Department of Control Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China

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Abstract�� In order to avoid some actuators saturation in advance, a proportion control allocation strategy was proposed in over-actuated saucer-shaped aircraft under position limits. The proportion was defined by the lower and upper position limits of the actuators. With the strategy, the system with two inputs was changed into one with single input, and the appearance of some actuators saturation in advance was avoided. The actuator dynamics and the uncertainty of the aerodynamic coefficients of the system were considered. A sliding mode control law was designed. The weighting matrix of the pseudoinverse control allocation was determined by comparison between proportion control allocation and pseudoinverse control allocation. Simulation results show that the proposed method is right and effective.
Keywords�� control and navigation technology of aerocraft   over-actuated   control allocation   sliding mode control   saucer-shaped aircraft     
Received 2009-09-09; published 2010-11-12
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About author: ���Ѱ�(1963-),��,����������,����,zhangya63@sina.com.
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���Ѱ�, ������.���ڱ�������Ĺ��������η�������ģ����[J]  �������պ����ѧѧ��, 2010,V36(10): 1194-1198
Zhang Youan, Wu Yinsheng.Sliding mode control based on proportion allocation for over-actuated saucer-shaped aircraft[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(10): 1194-1198
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