移动机器人仿真器
roslaunch husky_gazebo husky_playpen.launch #diff-laser
roslaunch ridgeback_gazebo ridgeback_world.launch #omni-laser
export TURTLEBOT3_MODEL=burger
roslaunch turtlebot3_gazebo turtlebot3_empty_world.launch
roslaunch turtlebot3_gazebo turtlebot3_house.launch
roslaunch turtlebot3_gazebo turtlebot3_autorace.launch #diff-laser-monocamera