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Learning Robotics using Python

You're reading from   Learning Robotics using Python Design, simulate, program, and prototype an autonomous mobile robot using ROS, OpenCV, PCL, and Python

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Product type Paperback
Published in Jun 2018
Publisher Packt
ISBN-13 9781788623315
Length 280 pages
Edition 2nd Edition
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Author (1):
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Lentin Joseph Lentin Joseph
Author Profile Icon Lentin Joseph
Lentin Joseph
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Table of Contents (12) Chapters Close

Preface 1. Getting Started with Robot Operating System 2. Understanding the Basics of Differential Robots FREE CHAPTER 3. Modeling the Differential Drive Robot 4. Simulating a Differential Drive Robot Using ROS 5. Designing ChefBot Hardware and Circuits 6. Interfacing Actuators and Sensors to the Robot Controller 7. Interfacing Vision Sensors with ROS 8. Building ChefBot Hardware and the Integration of Software 9. Designing a GUI for a Robot Using Qt and Python 10. Assessments 11. Other Books You May Enjoy

Creating a URDF model of the robot

The robot model in ROS contains packages to model the various aspects of the robot, which is specified in the XML Robot Description Format. The core package of this stack is URDF, which parses URDF files and constructs an object model of the robot.

Unified Robot Description Format (URDF) is an XML specification to describe the model of a robot. We can represent the following features of the robot using URDF:

  • The kinematic and dynamic description of the robot
  • The visual representation of the robot
  • The collision model of the robot

The description of the robot consists of a set of links (parts), elements, and a set of joint elements, which connect these links together. A typical robot description is shown in the following code:

 
<robot name="chefbot"> 
<link> ... </link> 
<link> ... </link> 
<link&gt...
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