摘要
针对航空光电稳定平台控制系统面临的机械谐振的问题,在双T型陷波器的基础之上提出了一种新型的结构滤波器。这种新型结构滤波器由两个双T型陷波器和一个低通滤波器构成,能够将谐振峰和反谐振峰同时抑制,克服了单一陷波器不能处理反谐振峰值的缺陷。同时相比于双二次型滤波器,结构滤波器的参数调节更加灵活,既可以调节峰值大小又可以调节峰值宽度。实验结果显示:相比于双二次型滤波器,结构滤波器拟合的谐振曲线与实际的扫频曲线匹配度更好。加入结构滤波器对模型进行补偿以后,控制系统的稳定精度提高了5.74倍,闭环带宽提升了4.54倍。新型结构滤波器对于机械谐振的抑制和控制系统的性能提升有明显作用。
To address the problem of mechanical resonance in the control system of an aeronautical optoelectronic stabilization platform,a novel structural filter based on a double-T notch filter was proposed in this study.The new structure filter,consisting of two double-T notches and a low-pass filter,could suppress both resonant and anti-resonant peaks while overcoming the problem whereby a single notch filter could not deal with anti-resonance.Compared to that of the double quadratic filter,the parameter adjustment of the structural filter was more flexible,and its peak size and width can be simultaneously adjusted.In addition,the experimental results show that the resonance curve fitted by the structural filter matches the actual sweep curve better.The stability accuracy of the control system is improved by 5.74 times and the closed-loop bandwidth is increased by 4.54 times after the structural filter is added to compensate the model.The new structure filter clearly aids in suppressing mechanical resonance and improving the performance of the control system.
作者
张士涛
张葆
李贤涛
夏先齐
钱锋
ZHANG Shi-tao;ZHANG Bao;LI Xian-tao;XIA Xian-qi;QIAN Feng(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2019年第8期1811-1818,共8页
Optics and Precision Engineering
基金
国家自然科学基金资助项目(No.61705225)
关键词
机械谐振
控制
陷波器
结构滤波器
建模
mechanical resonance
control
notch filter
structural filter
modeling
