基于周期平均的固定翼双旋弹弹道修正方法

doi:10.7527/S1000-6893.2014.0354

流体力学与飞行力学

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基于周期平均的固定翼双旋弹弹道修正方法

许诺, 于剑桥, 王亚飞

北京理工大学宇航学院, 北京 100081

收稿日期:2014-10-09 修回日期:2014-12-18 出版日期:2015-09-15 发布日期:2015-01-12
通讯作者: 于剑桥男, 博士, 教授, 博士生导师。主要研究方向: 飞行器总体设计与飞行器控制。 Tel: 010-68912407 E-mail: jianqiao@bit.edu.cn E-mail:jianqiao@bit.edu.cn
作者简介:许诺男, 博士研究生。主要研究方向: 飞行器总体设计与飞行器控制。 Tel: 15210800570 E-mail: promise_moon@126.com
基金资助:
国家自然科学基金(61350010)

Trajectory correcting method of fixed-canard dual-spin projectiles based on period average

XU Nuo, YU Jianqiao, WANG Yafei

School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

Received:2014-10-09 Revised:2014-12-18 Online:2015-09-15 Published:2015-01-12
Supported by:
National Natural Science Foundation of China (61350010)

摘要/Abstract

摘要：

针对一种滚转稳定的固定翼双旋弹,提出了一种平均控制力大小可调节的弹道修正方法,并据此设计了该弹的制导与控制方法。根据固定翼双旋弹的高速旋转特性,在对其角运动方程进行简化后进行角运动分析,得到了弹体的合法向力与固定鸭舵偏转角度之间的关系,然后基于周期平均的概念提出了一种弹道修正组件以不同转速、不同振幅旋转以产生大小可控平均法向力的弹道修正方法,并通过六自由度弹道仿真验证了此方法的可行性。分析结果表明,相比于弹道修正组件固定的传统弹道修正方法,这种新型的弹道修正方法可以通过连续地控制平均法向力的大小和方向,实现固定翼双旋弹的制导与控制,消除弹道偏差,提高命中精度。

关键词: 固定翼, 双旋弹, 弹道修正方法, 周期平均, 制导与控制

Abstract:

A trajectory correcting scheme in which the value of the average control force can be regulated is made for a fixed-canard dual-spin projectile which is spin-stabilized. Hereby the guidance and control system of the projectiles is devised. Based on the high-speed rotation characteristic of fixed-canard dual-spin projectiles, the angular motion equation is simplified, and the angular motion is analyzed. Then the relation between the resultant normal force and the deflection angle of canards is obtained. Afterwards, a trajectory correcting method, whose trajectory correction component rote in diverse rotational speed or diverse amplitude to produce the average normal force whose value is controllable, is proposed based on the concept of period average. And the feasibility of the method is validated by 6-DOF ballistic simulation. The results indicate that, compared with the traditional method whose trajectory correction component is fixed, the new trajectory correcting method can continuously control the value and direction of the average normal force, thus the guidance and control of fixed-canard dual-spin projectiles is realized so as to eliminate the trajectory deviation and improve the precision.

Key words: fixed-canard, dual-spin, trajectory correcting method, period average, guidance and control

中图分类号:

许诺, 于剑桥, 王亚飞. 基于周期平均的固定翼双旋弹弹道修正方法[J]. 航空学报, 2015, 36(9): 2892-2899.

XU Nuo, YU Jianqiao, WANG Yafei. Trajectory correcting method of fixed-canard dual-spin projectiles based on period average[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(9): 2892-2899.

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E-mail：hkxb@buaa.edu.cn

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基于周期平均的固定翼双旋弹弹道修正方法

Trajectory correcting method of fixed-canard dual-spin projectiles based on period average

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