Activate move base recovery behaviors

asked 2017-09-08 11:31:31 -0500

rastaxe
620 ●21 ●26 ●32

Dear ROS users, I am writing a nav_core recovery plugin to use with move_base and the trajectory rollout planner. To effectively test my code, I would like to be able to trigger the recovery behavior in someway, or tell the planner to activate a recovery often. In fact, when the robot is stuck, recovery behaviors are not always activated. I tried to lower the value of controller_patience in move base, but it seems that does not work. Is there a way to tell the planner to activate the recovery behaviors?

answered 2017-09-10 17:14:02 -0500

Sidd
155 ●8 ●14 ●23 http://siddharthsrivatsa.com/

move_base will invoke the recovery behaviors on three conditions: An oscillation was discovered, no global plan was received for some amount of time, or the local planner failed to find a valid velocity command for some amount of time. You can try forcing these conditions as test cases?

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Thanks for the answer. In my case, tuning the oscillation_timeout parameter is enough to trigger recovery behaviour. The default value is 0, which means infinite time.

rastaxe ( 2017-09-13 10:50:39 -0500 )edit

I'm sorry, but I'm confused by your comment. Did you mean that tuning the oscillation parameter fixed your problem?

Sidd ( 2017-09-22 15:56:04 -0500 )edit

yes, putting a small value (not zero) on the oscillation_timeout triggers the recovery behaviour very often, which was what I was looking for (only for testing my plugin).

rastaxe ( 2017-11-23 10:56:53 -0500 )edit

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