Open Access
表1
避障路径规划算法执行步骤
基于安全飞行走廊的密集障碍规避算法 |
1. 初始化任务航迹、无人机参数(最小转弯半径、传感器探测距离)、权重向量[η1 η2 η3]、航线跟踪算法参数(MPC)、DBSCAN算法参数; 2. 无人机感知传感器探测范围内的障碍物; 3. 若无人机没有探测到障碍物,以任务航迹为参考轨迹跟踪飞行; 4. 若无人机探测到障碍物,计算局部终点pe=[xe, ye, θe]; 5. DBSCAN算法计算划分可飞行区域与不可飞行区域; 6. 在采样区域内进行蒙特卡洛采样,得到 {(x1, y1), (x2, y2), …, (xnmc, ynmc)} 7. 基于评价优化函数采样点中的最优解 pe*=[xe*, ye*, θe*]; 8. 基于无人机当前位置ps=[xs, ys, θs]与终点位置 pe*=[xe*, ye*, θe*]计算Dubins曲线轨迹; 9. 以Dubins曲线轨迹为参考轨迹,通过MPC控制无人机飞行; 10. 判断无人机是否完成飞行任务,若完成任务,则任务结束,否则返回步骤2; |
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