双旋尾控弹全周期自由旋振运动分析  

Analysis of Complete Period Free Rotational Vibration Motion of a Tail-controlled Dual-spin Projectile

作　　者：钟鼎 嵇振涛 杨鹏翔[4] 张鑫烨 姜志皓 ZHONG Ding;JI Zhentao;YANG Pengxiang;ZHANG Xinye;JIANG Zhihao(School of Automation,Beijing Institute of Technology,Beijing 100081,China;Engineering Research Center of Navigation,Guidance and Control Technology of Ministry of Education,Beijing 100081,China;Hua an Industry Group Co.,LTD.,China North Industries Group Corporation Limited,Qiqihar 161046,Heilongjiang,China;Xi an Modern Control Technology Research Institute,Xi an 710068,Shaanxi,China)

机构地区：[1]北京理工大学自动化学院,北京100081 [2]教育部导航制导与控制工程研究中心,北京100081 [3]中国兵器工业集团公司北方华安工业集团有限公司,黑龙江齐齐哈尔161046 [4]西安现代控制技术研究所,陕西西安710068

出　　处：《兵工学报》2024年第S02期271-282,共12页Acta Armamentarii

基　　金：国家自然科学基金项目(U2341215)。

摘　　要：目前,制导化改造的双旋构型成为了提升弹药打击精度的一种有效方法。研究一种新型双旋尾控弹的全周期扰动运动特性,基于理想轴承假设和非滚转坐标系,建立双旋尾控弹的7自由度弹道模型。采用系数冻结法和小扰动假设对弹道方程进行线性化,获得了全周期扰动运动方程,并将其表示为状态空间形式。选择理想弹道上的特征点,采用数值计算方法获得全周期自由扰动运动解的模态,双旋弹的自由扰动运动表现为一种衰减旋振运动,讨论不同初始偏差下旋振运动解的形式。分析数值计算结果表明:双旋尾控弹在纵侧向运动上表现出了强烈的耦合特征;扰动下的旋振运动可分为长周期和短周期两个阶段,攻角偏量收敛速度慢,且不同攻角偏量的模态幅值具有不同的分布规律,为角运动和制导率设计奠定了基础。Recently,the guided transformation-based dual-spin configuration has become an effective means to improve the accuracy of ammunition strikes.To study the complete period free disturbance motion of a new type of tail-controlled dual-spin projectile,a 7 degrees of freedom ballistic model is established based on the ideal bearing assumption and non-roll coordinate system.The ballistic equations are linearized using the coefficient freezing method and small disturbance assumption.The complete period free disturbance motion equations are derived and represented in a state space form.A feature point on the ideal trajectory is selected.The motion modal for the complete period free disturbance near the feature point is obtained by numerical calculation method.The forms of free disturbance motion under different initial deviation values are discussed.The results indicate that the dual-spin projectile exhibits strong coupling characteristics in longitudinal and lateral motions.Similar to conventional projectiles,the free disturbance motion of dual-spin projectiles can still be divided into two stages:long period and short period.But the difference lies in the slow convergence of the angle of attack offset,and the modal amplitudes of different angle of attack offsets have different distribution patterns.The research results lay the foundation for further studying the angular motion and designing the guidance law.

关 键 词：双旋尾控弹 自由扰动运动 系数冻结法 线性化弹道 微型扰流片 

分 类 号：TJ391[兵器科学与技术—火炮、自动武器与弹药工程]