机载卫星双星天线运动碰撞检测算法

Motion Collision Detection Algorithm for Dual Satellite Antenna of Airborne Satellite

针对机载卫星双星天线运动碰撞问题,提出一种碰撞检测算法。首先提出扫掠体包围盒对双星天线摆臂进行包络,从而简化了双星天线的弧形障碍物几何模型;其次,针对传统方法不方便求解空间直线与曲线之间的最短距离的问题,提出运用自适应遗传算法求解几何基元中心线段最短距离的运动碰撞检测算法。最后,对双星天线进行数学建模,运用MATLAB对双星天线运动碰撞检测算法进行数值计算,并用ADAMS对数值计算过程进行虚拟样机仿真,将二者结果进行对比,验证了所提算法的正确性,从而为双星天线运动路径规划奠定基础。

Aiming at the motion collision problem of airborne satellite binary satellite, a collision detection algorithm is proposed. Firstly, the swept-body bounding box is used to envelop the swing arm of the double-star antenna, which simplifies the geometric model of the curved obstacle of the double-star antenna. Then,for the problem that the traditional method is not convenient to solve the shortest distance between the spatial line and the curve, the motion collision detection algorithm of solving the shortest distance of the geometric element center line segment by an adaptive genetic algorithm is proposed. Finally, the mathematical model of the dual-satellite antenna is built, and the motion collision detection algorithm of the dual-satellite antenna is numerically calculated by MATLAB, and the numerical calculation process is simulated by virtual prototype with ADAMS. The results of the two algorithms are compared to verify the correctness of the proposed algorithm, thus laying a foundation for the motion path planning of the dual-satellite antenna.