include "nav_msgs/Path.h" #include "ros/ros.h" #include <geometry_msgs/PoseStamped.h> #include <geometry_msgs/Twist.h> #include <iostream> #include <nav_msgs/Odometry.h> #include <tf/transform_datatypes.h> #include <tf/transform_listener.h> #include <visualization_msgs/Marker.h> #include <dynamic_reconfigure/server.h> #include <cmath> #include <std_msgs/Float64.h> #define PI 3.14159265358979 double last_steeringangle = 0; double L, Lfw, Lrv, Lfw_, Vcmd, lfw, lrv, steering, u, v; double Gas_gain, baseAngle, baseSpeed, Angle_gain_p, Angle_gain_d, goalRadius; int controller_freq; bool foundForwardPt, goal_received, goal_reached; double k_rou; double vp_max_base, vp_min; double stop_flag = 0.0; int mapPathNum; double slow_final, fast_final; int stopIdx = 0; double line_wight = 0.0; double initbaseSpeed; double obs_flag = 0.0;

navigation_msgs-ros1.zip

1. **Nav_msgs/Path**：这是一个表示机器人路径的消息类型，由一系列的geometry_msgs/PoseStamped组成，每个PoseStamped包含了机器人在特定时间的3D位置（x, y, z）和姿态（yaw）信息。 2. **Nav_msgs/...

teleop_twist_keyboard-master.zip

3. **Twist消息**：在ROS中，geometry_msgs/Twist是一种用于表示移动机器人速度的类型。它包含线速度（linear velocity）和角速度（angular velocity）两个向量，分别对应机器人的前后左右移动和旋转。 4. **...

CMakeLists.txt 中包含#include <ros/ros.h> #include <geometry_msgs/Quaternion.h> #include <tf2/LinearMath/Quaternion.h>

- #include <geometry_msgs/Quaternion.h>：ROS 中的一个消息类型，表示四元数。 - #include <tf2/LinearMath/Quaternion.h>：ROS 中的一个库，提供了用于处理四元数的常见函数。这些头文件是在 ROS 中编写 ...

#include "ros/ros.h" #include "geometry_msgs/Twist.h" #include "sensor_msgs/LaserScan.h" #include "s

ros::Publisher twist_pub = nh.advertise<geometry_msgs:: Twist>("cmd_vel", 10); // 创建订阅者，监听“scan”话题的LaserScan消息 ros::Subscriber scan_sub = nh.subscribe("scan", 10, callback_function); ...

#include <iostream> #include <cmath> #include <ros/ros.h> #include <geometry_msgs/PoseStamped.h> #include #include "plan_env/lec4.h" #include "ego_planner/TutorialGoal.h" using namespace std; ros::Subscriber odom_sub; ros::Publisher param_goal_pub; ros::ServiceClient client; int waypoint_num_; double waypoints_[50][3]; double spin_rate; // void OdomCallback(const nav_msgs::Odometry& msg) { ROS_WARN_ONCE("odom CB"); static int way_point_count = 0; if (way_point_count >= waypoint_num_) { ROS_WARN_ONCE("all points pub"); return; } float dist = std::sqrt(std::pow(waypoints_[way_point_count][0] - msg.pose.pose.position.x, 2) + std::pow(waypoints_[way_point_count][1] - msg.pose.pose.position.y, 2) + std::pow(waypoints_[way_point_count][2] - msg.pose.pose.position.z, 2)); //TODO /your code for publishing drone goal/ } int main(int argc, char** argv) { ros::init(argc, argv, "exercesie2_param_node"); ros::NodeHandle n("~"); odom_sub = n.subscribe("/odom", 10, OdomCallback); param_goal_pub = n.advertise<ego_planner::TutorialGoal>("/waypoint_generator/tutorial_goal", 10); //TODO /your code for param reading/ for(i) n.param("point_x", waypoints_ []); n.param("point_y", waypoints_10.0); n.param("point_z", waypoints_ 10.0); n.param("/spin_rate", spin_rate, 10.0); ros::Duration(0.5).sleep(); ros::Rate loop_rate(spin_rate); while (ros::ok()) { ros::spinOnce(); loop_rate.sleep(); } }补充完整这段代码

#include <geometry_msgs/PoseStamped.h> #include <nav_msgs/Odometry.h> #include "plan_env/lec4.h" #include "ego_planner/TutorialGoal.h" using namespace std; ros::Subscriber odom_sub; ros::Publisher ...

nav_msgs/path.h

nav_msgs/path.h是ROS（机器人操作系统）中的一个包含路径信息的消息类型。该消息类型包含了机器人在二维或三维空间中运动所经过的一系列点。 nav_msgs/path.h文件定义了Path消息的数据结构和成员函数。Path消息...

vscode 没有那个文件或目录 #include <geometry_msgs/Twist.h>

在使用 <geometry_msgs/Twist.h> 头文件之前，请确保已经正确安装了相关的 ROS 包，或者将 ROS 环境变量配置到您的项目中。可以尝试使用以下命令来安装相关的 ROS 包： sudo apt-get install ros-<your-ros-...

#include <ros/ros.h> #include <geometry_msgs/Twist.h> int main(int argc, char** argv) { ros::init(argc, argv,"turtlebot_control"); ros::NodeHandle nh; ros::Publisher pub = nh.advertise<geometry_msgs::Twist>("cmd_vel",10); ros::Rate rate(10); while(ros::ok()) { geometry_msgs::Twist msg; msg.linear.x = -0.05; msg.angular.z = 0.0; pub.publish(msg); rate.sleep(); } return 0; }

然后创建了一个发布者，将消息类型设置为geometry_msgs::Twist，并将主题设置为"cmd_vel"。这个发布者将在10Hz的频率下发布消息。在while循环中，创建了一个Twist类型的消息，设置线速度为-0.05，角速度为0。然后，...

#include <ros/ros.h> #include <turtlesim/Pose.h> #include <geometry_msgs/Twist.h> #include <std_srvs/Empty.h> #include <cmath> ros::Publisher twist_pub; void poseCallback(const turtlesim::Pose& pose) { static bool is_forward = true; static int count = 0; static float x_start = pose.x; static float y_start = pose.y; static float theta_start = pose.theta; // Calculate distance from starting points float dist = std::sqrt(std::pow(pose.x - x_start, 2) + std::pow(pose.y - y_start, 2)); geometry_msgs::Twist twist_msg; twist_msg.linear.x = 1.0; twist_msg.linear.y = 0.0; twist_msg.linear.z = 0.0; twist_msg.angular.x = 0.0; twist_msg.angular.y = 0.0; twist_msg.angular.z = 0.0; // Check if turtle has reached distance of 2. If so, stop and shutdown the node. if (dist >= 2.0) { twist_msg.linear.x = 0.0; ROS_INFO("Stop and Completed!"); twist_pub.publish(twist_msg); // Publish command ros::shutdown(); return; } twist_pub.publish(twist_msg); // Publish command } int main(int argc, char** argv) { ros::init(argc, argv, "lab1_node"); ros::NodeHandle nh; twist_pub = nh.advertise<geometry_msgs::Twist>("turtle1/cmd_vel", 1); ros::Subscriber pose_sub = nh.subscribe("turtle1/pose", 1, poseCallback); // reset the turtlesim when this node starts ros::ServiceClient reset = nh.serviceClient<std_srvs::Empty>("reset"); std_srvs::Empty empty; reset.call(empty); ros::spin(); // Keep node running until ros::shutdown() return 0; }请问该程序如何修改可使得乌龟按照正方形轨迹运行

if (dist >= side_length) { twist_msg.linear.x = 0.0; twist_msg.angular.z = 1.57; // Rotate the turtle by 90 degrees side_count++; // Increment the side count if (side_count % 4 == 0) { ROS_INFO...

/opt/ros/melodic/include/std_msgs/String.h

/opt/ros/melodic/include/std_msgs/String.h是ROS Melodic的标准消息库中的一部分，用于定义字符串消息类型。如果您遇到了CMake错误，可能是因为您缺少了darknet_ros_msgs这个包的配置文件。您可以尝试使用以下命令...

#include "obsdet_msgs/CloudCluster.h"

ament_target_dependencies(${PROJECT_NAME} rclcpp Boost nav_msgs tf2 tf2_ros sensor_msgs tf2_kdl tf2_geometry_msgs) 关于你的问题#include "obsdet_msgs/CloudCluster.h"，我无法提供具体的引用内容来...

<build_depend>message_generation</build_depend> <build_depend>std_msgs</build_depend> <build_depend>geometry_msgs</build_depend>有什么作用

其中，message_generation 允许生成消息文件，std_msgs 包含 ROS 的一些通用消息类型（例如字符串和整数），geometry_msgs 包含一些可用于描述机器人和其周围环境的消息类型（例如二维和三维坐标）。它们是ROS消息...

#include <ros/ros.h> #include <geometry_msgs/Twist.h> #include <stdlib.h> #define PI 3.14159265358979323846 int main(int argc, char **argv) { ros::init(argc, argv, "draw_rectangle"); //初始化ROS节点 ros::NodeHandle nh; //创建节点句柄，实例化一个对象 ros::Publisher pub = nh.advertise<geometry_msgs::Twist> ("turtle1/cmd_vel", 1000); //创建一个发布者，消息类型、话题名称以及队列长度 srand(time(0)); ros::Rate rate(2); //设置循环频率，与下面的rate.sleep();配合 int iterator = 0; while(ros::ok()) { geometry_msgs::Twist msg; msg.linear.x = 1; iterator++; //迭代器++ if(iterator==5) { iterator = 0; msg.linear.x = 0; msg.angular.z = 72; } //海龟先以x轴以线速度1进行移动，迭代到5次时，x轴线速度为0,海龟绕z轴转动90度，并循环执行 pub.publish(msg); //发布消息 ROS_INFO_STREAM("Sending random velocity command: " << "linear = " << msg.linear.x << " angular = " << msg.angular.z); //按照循环频率延时 rate.sleep(); } }

#include_msgs/Twist.h#include <stdlib.h> #define PI 3.14159265358979323846 int main(int argc, char **argv) { ros::init(argc, argv, "draw_rectangle"); // 初始化ROS节点 ros::NodeHandle nh; // 创建...

#include <ros/ros.h> #include <geometry_msgs/Twist.h> #include <math.h> int main(int argc, char** argv) { ros::init(argc, argv, "turtle_triangle"); ros::NodeHandle node; // 创建一个发布器，用于发布速度消息 ros::Publisher pub = node.advertise<geometry_msgs::Twist>("/turtle1/cmd_vel", 1000); // 设置循环频率，每秒10次 ros::Rate rate(10); // 初始化速度消息 geometry_msgs::Twist vel_msg; vel_msg.linear.x = 0; vel_msg.linear.y = 0; vel_msg.linear.z = 0; vel_msg.angular.x = 0; vel_msg.angular.y = 0; vel_msg.angular.z = 0; // 设定三角形边长和角度 double side_length = 1.0; double angle = M_PI / 3.0; // 循环绘制三角形 for (int i = 0; i < 3; i++) { // 线速度为正，角速度为0，直行一段距离 vel_msg.linear.x = side_length; pub.publish(vel_msg); double t0 = ros::Time::now().toSec(); double current_distance = 0.0; while (current_distance < side_length) { pub.publish(vel_msg); double t1 = ros::Time::now().toSec(); current_distance = vel_msg.linear.x * (t1 - t0); } // 线速度为0，角速度为正，原地旋转一定角度 vel_msg.linear.x = 0; vel_msg.angular.z = angle; pub.publish(vel_msg); double t2 = ros::Time::now().toSec(); double current_angle = 0.0; while (current_angle < angle) { pub.publish(vel_msg); double t3 = ros::Time::now().toSec(); current_angle = vel_msg.angular.z * (t3 - t2); } // 重置角速度 vel_msg.angular.z = 0; } return 0; }改成循环运行三次

#include <geometry_msgs/Twist.h> #include <math.h> int main(int argc, char** argv) { ros::init(argc, argv, "turtle_triangle"); ros::NodeHandle node; // 创建一个发布器，用于发布速度消息 ros::...

#include "ros/ros.h" #include<geometry_msgs/Twist.h> //运动速度结构体类型 geometry_msgs::Twist的定义文件 int main(int argc, char *argv[]) { ros::init(argc, argv, "vel_ctrl"); //对该节点进行初始化操作 ros::NodeHandle n; //申明一个NodeHandle对象n，并用n生成一个广播对象vel_pub ros::Publisher vel_pub = n.advertise<geometry_msgs::Twist>("/turtle1/cmd_vel", 10); //vel_pub会在主题"/cmd_vel"(机器人速度控制主题)里广播geometry_msgs::Twist类型的数据 ROS_INFO("draw_circle start...");//输出显示信息 while(ros::ok()) { geometry_msgs::Twist vel_cmd; //声明一个geometry_msgs::Twist 类型的对象vel_cmd，并将速度的值赋值到这个对象里面 vel_cmd.linear.x = 2.0;//前后（+-） m/s vel_cmd.linear.y = 0.0; //左右（+-） m/s vel_cmd.linear.z = 0.0; vel_cmd.angular.x = 0; vel_cmd.angular.y = 0; vel_cmd.angular.z = 1.8; //机器人的自转速度，+左转，-右转，单位是rad/s vel_pub.publish(vel_cmd); //赋值完毕后，发送到主题"/cmd_vel"。机器人的核心节点会从这个主题接受发送过去的速度值，并转发到硬件体上去执行 ros::spinOnce();//调用此函数给其他回调函数得以执行(比例程未使用回调函数) } return 0; }改为画一朵花

#include <geometry_msgs/Twist.h> int main(int argc, char *argv[]) { ros::init(argc, argv, "flower_ctrl"); ros::NodeHandle n; ros::Publisher vel_pub = n.advertise<geometry_msgs::Twist>("/turtle1/...

#include "ros/ros.h" #include "geometry_msgs/Twist.h" int main(int argc, char * argv[]) { ros::init(argc,argv,"pub"); ros::NodeHandle nodeHandle; ros::Publisher publisher = nodeHandle.advertise<geometry_msgs::Twist>("/turtle1/cmd_vel",10); geometry_msgs::Twist message; //线速度————控制前后移动，正数前进，负数后退 message.linear.x = 2.0;//线速度 message.linear.y = 0.0; message.linear.z = 0.0; //角速度————控制旋转，正数顺时针，负数逆时针 message.angular.x = 0.0; message.angular.y = 0.0; message.angular.z = 1.0; ros::Rate rate(1); while(ros::ok()) { publisher.publish(message); rate.sleep(); } return 0; }这个代码怎么修改成让乌龟走正方形

ros::Publisher publisher = nodeHandle.advertise<geometry_msgs::Twist>("/turtle1/cmd_vel",10); geometry_msgs::Twist message; // 设置线速度和角速度 double linear_speed = 1.0; // 线速度 double ...

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