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Local Planner Creation

asked 2013-04-21 20:46:33 -0500

camilla gravatar image

updated 2014-01-28 17:16:17 -0500

ngrennan gravatar image

Hi,

I'd like to create a local planner which implements the vfh algorithm and substitute it in the navigation stack. Any suggestion from where I can start or about previous work about it.
I saw that I should use the interface BaseLocalPlanner of nav_core.
But how can i substitute it when it is finished?
I can't figure out wher to specify which local planner I want to use.
Thank you in advance.

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answered 2013-04-21 22:20:34 -0500

Procópio gravatar image

You can start by taking a look at the CarrotPlanner local planner, it is one of the most simple and you can build from there. To specify a planner different from the default ones, you can add one of these lines to a launch file, where you launch the move_base node.

  ## alternative global planners ##
  <!-- <param name="base_global_planner" value="goal_passer/GoalPasser"/> -->
  <!-- <param name="base_global_planner" value="carrot_planner/CarrotPlanner"/> -->
  <!-- <param name="base_global_planner" value="SBPLLatticePlanner"/>-->

  ## alternative local planners ##
  <!-- <param name="base_local_planner" value="pose_follower/PoseFollower"/> -->
  <!-- <param name="base_local_planner" value="dwa_local_planner/DWAPlannerROS"/> -->
  <!-- <param name="base_local_planner" value="eband_local_planner/EBandPlannerROS"/> -->

For example:

<node pkg="move_base" type="move_base" respawn="false" name="move_base" output="screen">
  <param name="base_global_planner" value="goal_passer/GoalPasser"/>
  <param name="controller_frequency" value="10.0" />
</node>
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Thank you for your suggestion, it is really helpful. But isn't the carrot planner a global planner?

camilla gravatar image camilla  ( 2013-04-21 22:46:58 -0500 )edit

Indeed. Sorry, in that case you can begin with the PoseFollower and also take a look into the other local planners to have an idea on how to build your own.

Procópio gravatar image Procópio  ( 2013-04-21 22:51:58 -0500 )edit

@Procópio Silveira Stein I need to be able to navigate in an environment with moving people and avoid them do you have any idea how to accomplish it? Thanks

ctguell gravatar image ctguell  ( 2013-10-17 07:04:43 -0500 )edit

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Asked: 2013-04-21 20:46:33 -0500

Seen: 401 times

Last updated: Apr 21 '13