以GO1為例

1. CMakelists.txt更新語法

cmake_minimum_required(VERSION 3.8)
project(go1_description)
if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")add_compile_options(-Wall -Wextra -Wpedantic)
endif()
# find dependencies
find_package(ament_cmake REQUIRED)
find_package(rclcpp REQUIRED)
find_package(std_msgs REQUIRED)
find_package(sensor_msgs REQUIRED)
find_package(gazebo_ros REQUIRED)
find_package(xacro REQUIRED)# 安裝URDF和Xacro文件
install(DIRECTORYurdf/DESTINATION share/${PROJECT_NAME}/urdf
)# 安裝啟動文件
install(DIRECTORYlaunch/DESTINATION share/${PROJECT_NAME}/launch
)ament_package()

2. packge.xml更新語法

<?xml version="1.0"?>
<package format="3"><name>go1_description</name><version>0.0.0</version><description>The go1_description package</description><maintainer email="laikago@unitree.cc">unitree</maintainer><license>TODO</license><buildtool_depend>ament_cmake</buildtool_depend><depend>rclcpp</depend><depend>std_msgs</depend><depend>sensor_msgs</depend><depend>gazebo_ros</depend><depend>xacro</depend><test_depend>ament_lint_auto</test_depend><test_depend>ament_lint_common</test_depend><export><build_type>ament_cmake</build_type></export>
</package>

3. 新建launch文件

import os
from launch import LaunchDescription
from launch.actions import DeclareLaunchArgument, IncludeLaunchDescription
from launch.launch_description_sources import PythonLaunchDescriptionSource
from launch.substitutions import Command, LaunchConfiguration, PathJoinSubstitution
from launch_ros.actions import Node
from ament_index_python.packages import get_package_share_directorydef generate_launch_description():pkg_path = get_package_share_directory('go1_description')# 使用xacro命令生成URDFxacro_file = os.path.join(pkg_path, 'xacro', 'robot.xacro')robot_description = Command(['xacro ', xacro_file])# 啟動Gazebogazebo = IncludeLaunchDescription(PythonLaunchDescriptionSource([os.path.join(get_package_share_directory('gazebo_ros'), 'launch', 'gazebo.launch.py')]))# 發布機器人狀態robot_state_publisher_node = Node(package='robot_state_publisher',executable='robot_state_publisher',output='both',parameters=[{'robot_description': robot_description}])# 在Gazebo中生成實體spawn_entity = Node(package='gazebo_ros',executable='spawn_entity.py',arguments=['-topic', 'robot_description', '-entity', 'my_robot'],output='screen')return LaunchDescription([DeclareLaunchArgument('world',default_value='worlds/empty.world'),gazebo,robot_state_publisher_node,spawn_entity,])

4. colcon編譯包

cd ~/suo/unitree_ros/robots/go1_description
colcon build --packages-select go1_description
source install/setup.bash

5. 啟動仿真

ros2 launch go1_description spawn_robot.launch.py

6. 最終效果