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兵工学报 ›› 2023, Vol. 44 ›› Issue (6): 1795-1808.doi: 10.12382/bgxb.2022.0081

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采用弹体追踪导引律的旋转弹锥形运动稳定性

宋金超, 赵良玉*()   

  1. 北京理工大学 宇航学院, 北京 100081
  • 收稿日期:2022-02-13 上线日期:2023-06-30
  • 通讯作者:
  • 基金资助:
    国家自然科学基金项目(12072027); 国家自然科学基金项目(11532002)

Attitude Pursuit GuidanceLaw for Coning Motion Stability of Spinning Missiles

SONG Jinchao, ZHAO Liangyu*()   

  1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2022-02-13 Online:2023-06-30

摘要:

针对旋转弹采用捷联导引头和弹体追踪导引律时可能导致锥形运动失稳的问题,推导了捷联导引头在非旋转弹体坐标系下的动力学模型,建立了复数形式的弹体追踪制导控制系统数学模型;在不同弹体转速及阻尼回路增益情况下,分别考虑导引头响应延迟和陀螺标度因数误差,分析了上述制导控制系统的稳定性,并使用数值方法求得使其稳定的特征参数取值范围。研究结果表明:导引头延迟角越大,使系统稳定的制导回路增益上限越小;陀螺标度因数误差系数大于1时,使系统稳定的制导回路增益上限会变大,当陀螺标度因数误差系数小于1时,使系统稳定的制导回路增益稳定上限会变小。

关键词: 旋转弹, 锥形运动, 弹体追踪导引律, 稳定性

Abstract:

To address the problem of coning motion instability of spinning missiles induced by the introduction of the strapdown seeker and attitude pursuit guidance law, the dynamic model of the strapdown seeker in the non-spinning missile coordinate system is derived, and the mathematical model of the attitude pursuit guidance and control system in complex form is established. The response delay of the seeker and the gyro scale-factor error are considered under different spinning rates and damping loop gains. The stability of the spinning missile’s control and guidance system is analyzed, and the range of the corresponding characteristic parameters are solved by numerical methods. The results show that the larger the delay angle of the seeker is, the smaller the upper limit of the guidance loop gain that can stabilize the system is. When the gyro scale-factor error coefficient is greater than 1, the upper limit of the guidance loop gain become larger; when the scale-factor error coefficient is less than 1, the upper limit becomes smaller.

Key words: spinning missile, coning motion, attitude pursuit guidance (APG) law, dynamic stability