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�������պ����ѧѧ�� 2007, Vol. 33 Issue (08) :911-914    DOI:
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����ɽ1, ���˻�1, ����Ⱥ2*
1. �������պ����ѧ �Զ�����ѧ���������ѧԺ, ���� 100083;
2. ��ɽ��ѧ ��е����ѧԺ, �ػʵ� 066004
LMI based multi-objective robust control electro-hydraulic servo loading system
Wang Yanshan1, Li Yunhua1, Wang Yiqun2*
1. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2. College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China

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ժҪ Ϊ��߶�ͨ����Һ�ŷ�����ϵͳ������,����˻������Ծ��󲻵�ʽ(LMI,Linear Matrix Inequalities)�Ķ�Ŀ��³��������.���Ƚ�����ϵͳ�еIJ���ʱ���ԡ�ͨ���������Լ��ǶԳƸ׼��صIJ����Ե�����ȷ����������;Ȼ��ϵͳ��Ƶ��Ҫ��ͨ������Ȩ�������Կ���,����ȷ����ͨ��³��Ȩ�������Կ���,��ϵͳ��ʱ��˲̬��Ӧ����ͨ�����򼫵����ü��Կ���,��������һ����Ŀ���������ͨ��������������LMIԼ����͹�Ż����������.����������,����LMI�Ķ�Ŀ��³�����Ʒdz��ʺ϶�ͨ����Һ�ŷ�����ϵͳ���ص�,����ʹ����ϵͳ�ڽϴ�Χ�IJ����仯ʱ�Ծ������õĶ�̬����.
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Abstract�� To improve the performance of the multi-channel electro-hydraulic servo loading system, a multi-objective robust control method based on LMI(linear matrix inequalities) was proposed. Several factors such as parameter uncertainties, strong couplings among different loading channels, and performance differences caused by application of asymmetric hydraulic actuators for the loading system were all considered as a general uncertainty. The design process was composed of associating control system frequency band with performance weighting functions, associating system uncertainty with robust stability weighting functions and associating transient response behaviors with regional pole placement. By means of establishing and solving a LMI based convex optimization methodology, this multi-objective control problem can be solved subsequently. Simulation results show that the proposed control law design approach can achieve high dynamic performance and robust performance when the parameters of the electro-hydraulic servo loading system are changed in a wide range.
Keywords�� linear matrix inequality   servo system   robust control   force control     
Received 2006-09-10;
About author: ����ɽ(1974-),��,�ӱ��е���,��ʿ��,wysysu@263.net.
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����ɽ, ���˻�, ����Ⱥ.����LMI�ĵ�Һ�ŷ�����ϵͳ��Ŀ��³������[J]  �������պ����ѧѧ��, 2007,V33(08): 911-914
Wang Yanshan, Li Yunhua, Wang Yiqun.LMI based multi-objective robust control electro-hydraulic servo loading system[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(08): 911-914
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2007/V33/I08/911
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