基于ros的A*与dwa算法结合cpp主函数
时间: 2023-07-10 16:25:56 浏览: 159
好的,您的问题是基于ROS的A*与DWA算法结合CPP主函数。我理解您的要求是需要一个ROS节点,该节点能够实现A*与DWA算法结合的路径规划功能,并且该节点的主函数是使用CPP编写的。为了方便起见,我将代码分为三个部分:ROS节点初始化,A*算法实现,DWA算法实现。以下是代码示例:
```cpp
#include <ros/ros.h>
#include <nav_msgs/Path.h>
#include <geometry_msgs/PoseStamped.h>
#include <tf/transform_listener.h>
#include <tf/transform_datatypes.h>
#include <nav_msgs/OccupancyGrid.h>
#include <sensor_msgs/LaserScan.h>
#include <cmath>
// 全局变量
nav_msgs::OccupancyGrid map;
sensor_msgs::LaserScan laser_data;
// A*算法实现
std::vector<geometry_msgs::PoseStamped> A_star_algorithm(geometry_msgs::PoseStamped start, geometry_msgs::PoseStamped goal)
{
std::vector<geometry_msgs::PoseStamped> plan;
// TODO: A*算法实现
return plan;
}
// DWA算法实现
geometry_msgs::Twist DWA_algorithm(geometry_msgs::PoseStamped current_pose, std::vector<float> laser_scan)
{
geometry_msgs::Twist cmd_vel;
// TODO: DWA算法实现
return cmd_vel;
}
int main(int argc, char **argv)
{
ros::init(argc, argv, "path_planner");
ros::NodeHandle nh;
// 订阅地图和激光雷达数据
ros::Subscriber map_sub = nh.subscribe("map", 1, map_callback);
ros::Subscriber laser_sub = nh.subscribe("scan", 1, laser_callback);
// 发布路径和速度指令
ros::Publisher path_pub = nh.advertise<nav_msgs::Path>("path", 1);
ros::Publisher cmd_vel_pub = nh.advertise<geometry_msgs::Twist>("cmd_vel", 1);
// 监听tf变换
tf::TransformListener listener;
// 设置起点和终点
geometry_msgs::PoseStamped start;
start.header.frame_id = "map";
start.pose.position.x = 0.0;
start.pose.position.y = 0.0;
start.pose.orientation = tf::createQuaternionMsgFromYaw(0.0);
geometry_msgs::PoseStamped goal;
goal.header.frame_id = "map";
goal.pose.position.x = 5.0;
goal.pose.position.y = 5.0;
goal.pose.orientation = tf::createQuaternionMsgFromYaw(0.0);
// 循环执行
ros::Rate rate(10.0);
while (nh.ok())
{
// 获取当前位置
geometry_msgs::PoseStamped current_pose;
current_pose.header.frame_id = "base_link";
current_pose.pose.orientation.w = 1.0;
listener.transformPose("map", current_pose, current_pose);
// 执行A*算法
std::vector<geometry_msgs::PoseStamped> plan = A_star_algorithm(current_pose, goal);
// 发布路径
nav_msgs::Path path;
path.header.frame_id = "map";
path.poses = plan;
path_pub.publish(path);
// 执行DWA算法
geometry_msgs::Twist cmd_vel = DWA_algorithm(current_pose, laser_data.ranges);
// 发布速度指令
cmd_vel_pub.publish(cmd_vel);
ros::spinOnce();
rate.sleep();
}
return 0;
}
```
在上述代码中,ROS节点初始化的部分包括订阅地图和激光雷达数据、发布路径和速度指令、监听tf变换等操作。A*算法实现和DWA算法实现的部分则分别调用A_star_algorithm()和DWA_algorithm()函数来进行路径规划和速度控制。需要注意的是,A*算法和DWA算法的具体实现需要根据具体情况来进行编写,这里只是留下了TODO标记。
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