Re: [ros-users] controllers for car-like robots

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Author: User discussions
Date:  
To: User discussions
Subject: Re: [ros-users] controllers for car-like robots
On Thu, Dec 9, 2010 at 2:53 PM, <> wrote:
>  A question about LAGR. In the TR paper referenced in the ROS docs, you say in the intro that the controller accounts for the non-zero turning radius of the robot. However in the control section you mention that it samples trajectories with pure theta-dot as well, but this should not be possible with non-zero turning radius?


Ah, that's because the LAGR robot isn't actually car-like; it has two
driven wheels in the front and two passive casters in the back. So
you can command pure theta-dot, and it will rotate in place, about the
center of the front axle.

    brian.