解决ubuntu20.04(noetic)运行ROS

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解决ubuntu20.04(noetic)运行ROS

解决ubuntu20.04运行ROS-Academy-for-Beginners教学包没有模型的问题

• • 问题
  • 解决方法
  • 相关问题
  • • 问题1：boost_signalsConfig.cmake
    • 问题2：xacro name 'm' is not defined when evaluating expression 'm*(3*r*r+h*h)/12'
    • 问题3：$(find xacro)/xacro.py
    • 问题4：机器人无法移动

问题

如图，运行robot_spawn.launch时只能看见一个地板

解决方法

melodic分支有模型，我们在ROS工作空间的src文件夹下git clone melodic分支

lty@ubuntu:~/catkin_ws/src$ git clone 

重新catkin_make一次，再运行可以看到模型

相关问题

问题1：boost_signalsConfig.cmake

CMake Error at /usr/lib/cmake/Boost-1.75.0/BoostConfig.cmake:141 (find_package):
Could not find a package configuration file provided by “boost_signals”
(requested version 1.75.0) with any of the following names:

boost_signalsConfig.cmake
boost_signals-config.cmake

我们将catkin_ws/src/ROS-Academy-for-Beginners-melodic/dependlib里的三个库换掉

lty@ubuntu:~/catkin_ws/src$ cd ROS-Academy-for-Beginners-melodic/dependlib/
lty@ubuntu:~/catkin_ws/src/ROS-Academy-for-Beginners-melodic/dependlib$ rm -rf *#换成这三个
git clone .git
git clone 
git clone .git

问题2：xacro name ‘m’ is not defined when evaluating expression ‘m*(3rr+h*h)/12’

我们将 catkin_ws/src/ROS-Academy-for-Beginners-melodic/tf_follower/mybot_description/urdf/macros.xacro文件改一下
改成这样：

<?xml version="1.0"?>
<robot name="mybot" xmlns:xacro="">
<xacro:macro name="cylinder_inertia" params="m r h"><inertial><mass value="${m}" /><inertia  ixx="${m*(3*r*r+h*h)/12}" ixy = "0" ixz = "0"iyy="${m*(3*r*r+h*h)/12}" iyz = "0"izz="${m*r*r/2}"/></inertial>
</xacro:macro><xacro:macro name="box_inertia" params="m x y z"><inertial><mass value="${m}" /><inertia  ixx="${m*(y*y+z*z)/12}" ixy = "0" ixz = "0"iyy="${m*(x*x+z*z)/12}" iyz = "0"izz="${m*(x*x+z*z)/12}"/></inertial>
</xacro:macro><xacro:macro name="sphere_inertia" params="m r"><inertial><mass value="${m}" /><inertia  ixx="${2*m*r*r/5}" ixy = "0" ixz = "0"iyy="${2*m*r*r/5}" iyz = "0"izz="${2*m*r*r/5}"/></inertial>
</xacro:macro>
</robot>

问题3：$(find xacro)/xacro.py

将所有xml文件里的 $(find xacro)/xacro，改成

$(find xacro)/xacro

问题4：机器人无法移动

/
noetic下没有yocs_cmd_vel_mux，我们git clone .git
把里面的文件夹yocs_cmd_vel_mux粘到工作空间中src/ROS-Academy-for-Beginners-melodic/dependlib下（只要在src里面就可以），重新catkin_make一遍就可以了