fbasatemur / ur10_kinematics

ROS-Industrial Universal Robots UR10 arm kinematics

ur10_kinematics

Project Description

In the ROS1 Noetic environment, an application has been implemented for the forward kinematics of a UR10 robotic arm with 6 degrees of freedom (6DOF) in the Gazebo simulation environment. The position and orientation information of the end-effector is obtained based on the angle values provided for the 6 joints of the UR10 arm.

The project utilizes the following ROS packages: geometry_msgs, roscpp, nav_msgs, std_msgs.

To install the simulation world:

git clone https://github.com/fbasatemur/ur10_kinematics.git
mkdir -p gazebo_plugins_rtg/src
cd ur10_kinematics*
mv gazebo_plugins_rtg ../gazebo_plugins_rtg/src
cd ../gazebo_plugins_rtg
rosdep install -a
catkin_make
source ~/.bashrc
cp -r src/gazebo_plugins_rtg/models/ur10 ~/.gazebo/models
source devel/setup.bash

To start the simulation world (UR10)

roslaunch gazebo_plugins_rtg ur10.launch

To install ur10_kinematics:

cd ur10_kinematics*
mkdir src 
mv ur10_kinematics src
catkin_make
source devel/setup.bash

For observing the end-effector pose using forward kinematics:

rosrun ur10_kinematics forward_kinematics

Forward Kinematic

To obtain the end-effector position and orientation information of the UR10 robot arm, the calculation of the homogeneous matrix between joints based on the given joint points on the left is expressed below:

The appearance of the robot arm for the given joint angles { 0.5, -0.2, 0.6, -0.6, -0.4, 0.5 }, along with the end-effector position calculated from the odometry message, is provided below.

The <3,3> region of the resulting homogeneous matrix is used for orientation, and the <3,1> region is used for position extraction.