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为解决导弹制导控制系统建模中弹体模型与系统的匹配问题,提出了一种在弹体执行坐标系上构建导弹六自由度运动模型的方法。首先在弹体执行坐标系对导弹进行受力分析,建立导弹动力学方程组,然后利用弹体执行坐标系与弹体坐标系的关系,直接列写运动学方程组。该方法简化了弹体建模过程中气动数据的处理,统一了动力学和运动学方程组以及制导控制方程组的参考坐标系,从而使制导控制系统建模过程更为简单,同时有效提高了仿真效率。最后,通过仿真验证了该方法的有效性。
In order to solve the matching problem between the projectile model and the system in the missile guidance and control system modeling, a method of constructing a 6-DOF motion model on the projectile coordinate system is proposed. Firstly, the force analysis of the missile is carried out in the coordinate system of the projectile, the missile dynamics equations are established, and then the relationship between the coordinate system and the projectile coordinate system is executed by the projectile, and the equations of kinematics are written directly. The method simplifies the processing of aerodynamic data in the projectile modeling process, unifies the kinematic and kinematic equations and the reference coordinate system of the guidance control equations, so that the guidance and control system modeling process is more simple and effectively improved Simulation efficiency. Finally, the effectiveness of this method is verified by simulation.