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�������պ����ѧѧ�� 2008, Vol. 34 Issue (06) :652-655    DOI:
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Variable structure control of testing bed drive for aero hydraulic pump
Bai Guochang, Wang Zhanlin, Chen Juan*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� It is necessary to test the hydraulic power on ground, the method of frequency inverter+��asynchronous�� motor+increasing gear box is one of advanced and effective way in the testing of aero hydraulic pump on ground. The mathematical model of drive system with vector control inverter of aero testing bed was established. Aiming at problems that the pump rotate speed did not keep constant if the load variable at the process of experiment on ground, a control algorithms called sliding mode control(SMC) with integral sliding surface was adopted, and Lyapunov function was constructed to prove the stability. To debase the chatting phenomenon, a control algorithm combine SMC and pseudo derivative feedback(PDF) control supervised by fuzzy control was put forward. The simulation and test results show that this control method has high speed precision and can decrease chatting phenomenon under the condition of retaining the robustness of SMC.
Keywords�� aero hydraulic pump testing bed   variable structure with sliding mode control   anti chatting method   pseudo derivative feedback control     
Received 2007-06-05;
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About author: �׹���(1968��)��,���������,������,bai_guochang@126.com.�ֹ�����֣�ݴ�ѧ��е����ѧԺ.
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�׹���, ��ռ��, �¾�.���ձ�����̨������ṹ����[J]  �������պ����ѧѧ��, 2008,V34(06): 652-655
Bai Guochang, Wang Zhanlin, Chen Juan.Variable structure control of testing bed drive for aero hydraulic pump[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(06): 652-655
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