move_Base如何使用nav_msgs Occupancygrid话题
时间: 2023-08-14 10:06:16 浏览: 179
cb_base_navigation:替代move_base(导航堆栈ROS),可以处理终端位置约束
要使用move_base与nav_msgs/OccupancyGrid话题,你需要进行以下步骤:
1. 在你的代码中导入所需的消息类型和move_base库:
```python
import rospy
from nav_msgs.msg import OccupancyGrid
from move_base_msgs.msg import MoveBaseAction, MoveBaseGoal
```
2. 创建一个ROS节点并初始化它:
```python
rospy.init_node('move_base_example')
```
3. 创建一个订阅者来接收OccupancyGrid消息:
```python
def occupancy_grid_callback(msg):
# 在这里处理接收到的地图消息
pass
rospy.Subscriber('/your/occupancy_grid_topic', OccupancyGrid, occupancy_grid_callback)
```
4. 创建一个发布者来发布MoveBaseGoal消息到move_base节点:
```python
move_base_pub = rospy.Publisher('/move_base/goal', MoveBaseActionGoal, queue_size=1)
```
5. 在适当的时候,创建一个MoveBaseGoal消息并发布它:
```python
goal = MoveBaseGoal()
# 设置目标位置和姿态
goal.target_pose.pose.position.x = 1.0
goal.target_pose.pose.position.y = 2.0
goal.target_pose.pose.orientation.w = 1.0
# 设置目标坐标系
goal.target_pose.header.frame_id = 'map'
# 设置时间戳
goal.target_pose.header.stamp = rospy.Time.now()
# 发布目标
move_base_pub.publish(goal)
```
这些步骤将帮助你使用move_base与nav_msgs/OccupancyGrid话题进行导航。请记得将`/your/occupancy_grid_topic`替换为你实际使用的OccupancyGrid话题。
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