导弹稳定控制中陷波滤波器的离散化研究  

Research on the Discretization of Notch Filter in Missile Stability Control

作　　者：苏日新 张欧 SU Rixin;ZHANG Ou(Aerospace Jiangnan Group Co.,Ltd,Guiyang 550009,China;College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China;Jiangnan Design&Research Institute of Machinery&Electricity,Guiyang 550009,China)

机构地区：[1]航天江南集团有限公司,贵州贵阳550009 [2]国防科技大学空天科学学院,湖南长沙410073 [3]江南机电设计研究所,贵州贵阳550009

出　　处：《现代防御技术》2024年第2期72-78,共7页Modern Defence Technology

摘　　要：开展导弹稳定控制设计时,通常采用陷波滤波器对弹体弹性振动频率进行抑制,保证控制系统的弹体弹性稳定性。介绍了陷波滤波器的基本原理,针对陷波滤波器离散化设计带来的频率畸变问题,提出了一种改进预畸变双线性变换法,在不改变陷波滤波器阻尼比值的基础上,通过调节阻尼大小实现频率畸变的补偿。与传统离散化方法相比,所提出的方法既补偿了畸变频率,又保证了陷波宽度和相位特性与连续域相同,具有操作简单、适用性强等优点。The notch filter is usually used to suppress the elastic vibration frequency of the missile body when the missile stability control is designed,so as to ensure the elastic stability of the missile body in the control system.The basic principle of the notch filter was introduced,and an improved pre-distortion bilinear transformation approach was proposed to address the frequency distortion problem caused by the discretization design of the notch filter.Compensation for the frequency distortion was achieved by adjusting the damping magnitude without changing the damping ratio of the notch filter.Compared with the traditional discretization method,the proposed method not only compensates for distortion frequency but also ensures that the notch width and phase characteristics are the same as those in the continuous domain,and the proposed method has the advantages of simple operation and strong adaptability.

关 键 词：稳定控制 陷波滤波器 弹性频率 离散化设计 预畸变 

分 类 号：TJ765.2[兵器科学与技术—武器系统与运用工程]