ROS使用 cartographer建图

1>启动gazebo

 roslaunch mbot_gazebo view_mbot_with_laser_gazebo_suyunzzz_world.launch

2>启动cartographer

roslaunch cartographer_ros cartographer_demo_rplidar.launch

launch文件如下：

<!--Copyright 2016 The Cartographer AuthorsLicensed under the Apache License, Version 2.0 (the "License");you may not use this file except in compliance with the License.You may obtain a copy of the License athttp://www.apache.org/licenses/LICENSE-2.0Unless required by applicable law or agreed to in writing, softwaredistributed under the License is distributed on an "AS IS" BASIS,WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.See the License for the specific language governing permissions andlimitations under the License.
--><!-- 请复制该文件到cartographer_ros/cartographer_ros/launch中使用 -->
<launch>  <param name="/use_sim_time" value="true" />  <node name="cartographer_node" pkg="cartographer_ros"  type="cartographer_node" args="  -configuration_directory $(find cartographer_ros)/configuration_files  -configuration_basename rplidar.lua"  output="screen">  <remap from="scan" to="scan" />  </node>  <node name="rviz" pkg="rviz" type="rviz" required="true"  args="-d $(find cartographer_ros)/configuration_files/demo_2d.rviz" />
</launch>

其中的rplidar.lua配置文件如下:

-- Copyright 2016 The Cartographer Authors
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--      http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.-- 请复制该文件到cartographer_ros/cartographer_ros/configuration_files中编译
include "map_builder.lua"
include "trajectory_builder.lua"options = {map_builder = MAP_BUILDER,trajectory_builder = TRAJECTORY_BUILDER,map_frame = "map",tracking_frame = "base_link",published_frame = "odom",odom_frame = "odom",provide_odom_frame = false,use_odometry = true,num_laser_scans = 1,num_multi_echo_laser_scans = 0,num_subdivisions_per_laser_scan = 1,num_point_clouds = 0,lookup_transform_timeout_sec = 0.2,submap_publish_period_sec = 0.3,pose_publish_period_sec = 5e-3,trajectory_publish_period_sec = 30e-3,
}MAP_BUILDER.use_trajectory_builder_2d = trueTRAJECTORY_BUILDER_2D.submaps.num_range_data = 35
TRAJECTORY_BUILDER_2D.min_range = 0.3
TRAJECTORY_BUILDER_2D.max_range = 8.
TRAJECTORY_BUILDER_2D.missing_data_ray_length = 1.
TRAJECTORY_BUILDER_2D.use_imu_data = false
TRAJECTORY_BUILDER_2D.use_online_correlative_scan_matching = true
TRAJECTORY_BUILDER_2D.real_time_correlative_scan_matcher.linear_search_window = 0.1
TRAJECTORY_BUILDER_2D.real_time_correlative_scan_matcher.translation_delta_cost_weight = 10.
TRAJECTORY_BUILDER_2D.real_time_correlative_scan_matcher.rotation_delta_cost_weight = 1e-1SPARSE_POSE_GRAPH.optimization_problem.huber_scale = 1e2
SPARSE_POSE_GRAPH.optimize_every_n_scans = 35
SPARSE_POSE_GRAPH.constraint_builder.min_score = 0.65return options

注：对于lua配置文件中的参数的修改，都需要重新编译cartographer的单独的工作空间使其生效。

3>启动键盘控制节点

rosrun mbot_teleop mbot_teleop.py

运行如下图：

以上具体文件见 https://github.com/suyunzzz/ROS_homework

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