ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange
Ask Your Question
1

Robot Thinks It's Stuck When It Isn't

asked 2018-02-10 18:32:49 -0500

MarkyMark2012 gravatar image

Hi,

I've got an annoying problem here. I've trying to get the robot to un-dock from the charging station, navigate then come back.

In the screen-shot below you can see that there is free space round the robot, but in the planning output it wants to start recover procedures when there is no need. All it needs to do it reverse out (I've already set min_vel_x: -1.0 to achieve this). Still no luck. What else can I try tuning? I can't see anything else in dwa_local_planner_params.yaml, costmap_common_params.yaml, local_costmap_params.yaml or global_costmap_params.yaml which looks immediately obvious.

image description

Thanks

Mark

edit retag flag offensive close merge delete

Comments

Please provide more information about what planner you are using and what messages you're getting when things won't work.

David Lu gravatar image David Lu  ( 2018-02-13 12:01:55 -0500 )edit
1

I'm using the DWA planner (sorry thought I'd added that). The error message is "Rotate recovery can't rotate in place because there is a potential collision. Cost -1.0"

Which is odd because, as you can see in the screen shot there is a path that has been calculated (in the direction I would expect

MarkyMark2012 gravatar image MarkyMark2012  ( 2018-02-13 13:51:24 -0500 )edit

What do you mean by visualizing the local footprint?

Thanks

MarkyMark2012 gravatar image MarkyMark2012  ( 2018-02-18 13:44:38 -0500 )edit

There should be a Polygon topic that is something like .../whatever/local_costmap/footprint

David Lu gravatar image David Lu  ( 2018-02-18 20:58:03 -0500 )edit

1 Answer

Sort by ยป oldest newest most voted
0

answered 2018-02-13 16:17:10 -0500

David Lu gravatar image

Try visualizing the robot's (local) footprint.

edit flag offensive delete link more

Question Tools

2 followers

Stats

Asked: 2018-02-10 18:32:49 -0500

Seen: 1,585 times

Last updated: Feb 13 '18