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How to improve the speed of dwa in base_local_planner? [closed]

asked 2015-05-19 22:54:44 -0500

scopus gravatar image

I am using base_local_planer as local planner. However, with same parameters, the speed of robot from Dynamic Window Approach(DWA) is smaller than with Trajectory Rollout(TR). The "max_vel_x" is set to be 2.0( m/s) ( with non-holonomic mobile model). It is easy to reach this maximum speed when controleld by Trajectory Rollout.

However, when paramer "dwa" is set to be true, the maximum value from topic /cmd_vel is about 0.25(m/s) . It is same situation when dwa_local_planner is used.

Could someone tell me how to solve this problem ? Thanks.

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Closed for the following reason the question is answered, right answer was accepted by scopus
close date 2015-05-20 20:14:58.945992

2 Answers

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answered 2015-05-20 01:51:19 -0500

ahendrix gravatar image

Is your odometry correctly reporting the speed of the robot? If it isn't, the acceleration limit may be limiting the commanded speed.

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Thank you for you attention! My project is implemented in a simulating way. Fake_localization is used for robot localization. I have checked out the source code of fake localization. It doesn't need the twist component in nav_msgs/odometry msg. So twist information is not sent to fake localization

scopus gravatar image scopus  ( 2015-05-20 08:44:08 -0500 )edit

You should implement the twist component in the odometry message.

ahendrix gravatar image ahendrix  ( 2015-05-20 19:28:10 -0500 )edit

answered 2015-05-20 01:32:08 -0500

scopus gravatar image

I found that if the acc_lim_x is increased to 5.0 m/s^2 or more, then the speed is 0.5m/s or more. I think this is the only solution.

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Asked: 2015-05-19 22:54:44 -0500

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Last updated: May 20 '15