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激光SLAM技术下移动机器人自主导航优化研究

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在进行自主导航时,移动机器人躲避障碍物的能力较差,使得完成任务需要的时间较长。为此,提出一种激光SLAM技术下移动机器人自主导航优化方法。利用图优化理论,获取全部位姿拓展节点对应的子节点,通过闭环检测,计算误差最小的位姿,根据SPA算法更新位姿,完成移动机器人的位姿估计。利用激光SLAM技术,输出优化后移动机器人位姿,使用A*算法,得到最优通行路径,引入DWA算法展开轨迹计算,实现移动机器人自主导航优化。实验结果表明,所提方法能够准确估计移动机器人位姿,在自主导航优化后,移动机器人自主导航路径长度仅为1 900 mm,转角次数仅为2次,运行周期仅为190次,平均速度高达280 mm/s,具有较好的移动机器人自主导航优化效果。
Optimization of autonomous navigation for mobile robots using laser SLAM technology
When conducting autonomous navigation,mobile robots have poor ability to avoid obstacles,resulting in a longer time required to complete tasks.Therefore,a method for optimizing autonomous navigation of mobile robots using laser SLAM technology is proposed.Using graph optimization theory,obtain the corresponding sub nodes of all pose extension nodes,calculate the pose with the smallest error through closed-loop detection,update the pose accord-ing to the SPA algorithm,and complete the pose estimation of the mobile robot.By using laser SLAM technology,the optimized pose of the mobile robot is output,and the A*algorithm is used to obtain the optimal passage path.The DWA algorithm is introduced to calculate the trajectory and achieve autonomous navigation optimization of the mobile robot.The experimental results show that the proposed method can accurately estimate the pose of mobile robots.After autonomous navigation optimization,the length of the autonomous navigation path of the mobile robot is only 1 900 mm,the number of turns is only 2,the running cycle is only 190,and the average speed is as high as 280 mm/s.It has good autonomous navigation optimization effect for mobile robots.

pose estimationlaser SLAM technologymobile robotsautonomous navigation optimization

金凯乐、李发元、杨婷

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西北工业大学工程实践训练中心,西安 710100

西安建筑科技大学工程实践训练中心,西安 710055

位姿估计 激光SLAM技术 移动机器人 自主导航优化

全国金工与工训青年教师教学方法创新研究项目

2022JJGX-WKJY-16

2024

激光杂志
重庆市光学机械研究所

激光杂志

CSTPCD北大核心
影响因子:0.74
ISSN:0253-2743
年,卷(期):2024.45(5)
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