ROS Answers: Open Source Q&A Forum - RSS feedhttps://answers.ros.org/questions/Open source question and answer forum written in Python and DjangoenROS Answers is licensed under Creative Commons Attribution 3.0Mon, 30 May 2016 02:48:55 -0500Linearity of Turtlebot 2 (Kobuki base)https://answers.ros.org/question/235208/linearity-of-turtlebot-2-kobuki-base/ Hi,
I want to analyse the effect of sending differents values of linear.x to Turtlebot2 (using Twist message from terminal using rostopic pub ...).
I measure speed vs linear.x and it seems that I got 2 parts. A line for linear.x between 0 and 0.7 and another rate of slope for values of linear.x between 0.9 and 1.6.
So my question is this one: does a limit exist for linear.x on the Turtlebot2 ? Does this command drive directly the speed ? What is the expected characteristics of speed vs linear.x on Turtlebot 2 ?
Thanks for help.
Wed, 25 May 2016 11:55:24 -0500https://answers.ros.org/question/235208/linearity-of-turtlebot-2-kobuki-base/Comment by goupil35000 for <p>Hi,</p>
<p>I want to analyse the effect of sending differents values of linear.x to Turtlebot2 (using Twist message from terminal using rostopic pub ...). </p>
<p>I measure speed vs linear.x and it seems that I got 2 parts. A line for linear.x between 0 and 0.7 and another rate of slope for values of linear.x between 0.9 and 1.6.</p>
<p>So my question is this one: does a limit exist for linear.x on the Turtlebot2 ? Does this command drive directly the speed ? What is the expected characteristics of speed vs linear.x on Turtlebot 2 ?</p>
<p>Thanks for help.</p>
https://answers.ros.org/question/235208/linearity-of-turtlebot-2-kobuki-base/?comment=235539#post-id-235539Hi,
Noboby tries to see linearity of linear velocity on turtlebot 2 (speed vs linear.x using Twist) ?
Thanks Sun, 29 May 2016 22:06:51 -0500https://answers.ros.org/question/235208/linearity-of-turtlebot-2-kobuki-base/?comment=235539#post-id-235539Comment by Javier V. Gómez for <p>Hi,</p>
<p>I want to analyse the effect of sending differents values of linear.x to Turtlebot2 (using Twist message from terminal using rostopic pub ...). </p>
<p>I measure speed vs linear.x and it seems that I got 2 parts. A line for linear.x between 0 and 0.7 and another rate of slope for values of linear.x between 0.9 and 1.6.</p>
<p>So my question is this one: does a limit exist for linear.x on the Turtlebot2 ? Does this command drive directly the speed ? What is the expected characteristics of speed vs linear.x on Turtlebot 2 ?</p>
<p>Thanks for help.</p>
https://answers.ros.org/question/235208/linearity-of-turtlebot-2-kobuki-base/?comment=235548#post-id-235548AFAIK, linear.x is the linear velocity just want in the X axis, and then I guess the turtlebot controller tries to do its best to reach it. When i worked with turtlebot2 I didn't study that linearity, but I had no problems reaching the commanded velocity (note max. in specifications is 0.7m/s)Mon, 30 May 2016 02:48:55 -0500https://answers.ros.org/question/235208/linearity-of-turtlebot-2-kobuki-base/?comment=235548#post-id-235548