机动弹头六自由度运动建模研究

Study on Six Degree of Freedom Dynamics and Kinematics Modeling of Reentry Maneuver Warhead

机动弹头的应用是弹道导弹提高突防能力和命中精度的有效选择。为了深入研究机动弹头的制导与控制规律,该文针对机动弹头再入机动飞行的特点,给出了气动控制力和控制力矩的计算模型,并应用六自由度一体化建模理论建立了较为精确的动力学和运动学数学模型,而且基于MATLAB/Simulink对其数学模型进行了转化,建立了可在计算机上实现的数字仿真模型,并给出了部分仿真结果。结果表明,所建立的机动弹头六自由度运动模型能够充分表征其再入机动飞行的特点,为制导和控制系统的六自由度一体化建模与仿真提供了基础和前提。

It is an effective method to applying reentry maneuver warhead for improving its penetration capability and firing accuracy. According to the flying trait of reentry maneuver warhead, the calculation model of pneumatic control dynamic and pneumatic control moment was discussed, and the more accurate mathematical model of its dynamics and kinematics was established by applying the theory of six degree of freedom integrative modeling in this paper. Moreover, based on MATLAB/Simulink, the mathematical model was translated into the digital simulation model which could be realized at the computer. At last some simulation results were displayed and proved that the model could describe sufficiently the flying trait of reentry maneuver warhead. In a word, the model established in this paper provided the precondition for six degree of freedom integrative modeling of control system and navigation system of reentry maneuver warhead.