北京航空航天大学学报 ›› 2009, Vol. 35 ›› Issue (1): 87-90.

• 论文 • 上一篇    下一篇

基于鲁棒控制的光纤电流互感器的噪声抑制

李 慧, 张春熹, 张 晞, 张朝阳   

  1. 北京航空航天大学 仪器科学与光电工程学院, 北京 100191
  • 收稿日期:2008-02-26 出版日期:2009-01-31 发布日期:2010-09-16
  • 作者简介:李 慧(1981-),女,山东聊城人,博士生,lihuibuaa@gmail.com.

Noise suppression of fiber optic current transformer system based on robust control

Li Hui, Zhang Chunxi, Zhang Xi, Zhang Chaoyang,   

  1. School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2008-02-26 Online:2009-01-31 Published:2010-09-16

摘要: 光纤电流互感器是一类存在模型参数不确定性的系统,为提高系统测量精度,利用鲁棒控制理论提出了系统的鲁棒H控制器设计方案.分析系统的检测原理并建立数学模型.针对光纤电流互感器系统给出控制器设计指标,使得闭环系统渐近稳定且提高系统噪声抑制能力.理论证明控制器设计方案满足设计指标的要求,并利用线性矩阵不等式的可行解给出了控制器的构造方法.最后通过计算机仿真和实验结果证明了此控制器设计方案的可行性和有效性.

Abstract: The fiber optic current transformer is a system that comprises parameter uncertainty and noise signals. For improving precision of the system, the design of robust H -infinite controller was discussed. The fiber optic current transformer based on closed-loop detection was analyzed, and the model of the system was built. The design problem of the fiber optic current transformer controller was considered which guaranteed that the closed loop system was asymptotically stable and the noise suppression of the system was improved. The controller was proved that the control system meets the design target. Then the problem of the design of the robust controller can be solved on the basis of linear matrix inequality technique. The result was provided to show the effectiveness and feasibility of the robust controller by the computer-s simulation and experimental test.

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