1：安装仿真包

sudo apt-get install ros-$ROS_DISTEO-stdr-simulator

2：运行

 roslaunch stdr_launchers server_with_map_and_gui_plus_robot.launch 

//该包的话题名为/robot0/cmd_vel
3：查看话题

rostopic info /robot0/cmd_vel

可以看到消息的类型以及订阅者

4：查看消息类型

rosmsg show geometry_msgs/Twist

5：控制机器人行走
（1）终端输入命令 rostopic pub -r 3 /…
(2) 代码控制
代码如下：

#include <ros/ros.h>
#include <geometry_msgs/Twist.h>
//node to send Twist commands to the Simple 2-Dimensional Robot Simulator via cmd_vel
int main(int argc, char **argv) {
    ros::init(argc, argv, "stdr_commander"); 
    ros::NodeHandle n; // two lines to create a publisher object that can talk to ROS
    ros::Publisher twist_commander = n.advertise<geometry_msgs::Twist>("/robot0/cmd_vel", 1);
    //some "magic numbers"
    double sample_dt = 0.01; //specify a sample period of 10ms  
    double speed = 1.0; // 1m/s speed command
    double yaw_rate = 0.5; //0.5 rad/sec yaw rate command
    double time_3_sec = 3.0; // should move 3 meters or 1.5 rad in 3 seconds
    
      
    geometry_msgs::Twist twist_cmd; //this is the message type required to send twist commands to STDR 
    // start with all zeros in the command message; should be the case by default, but just to be safe..
    twist_cmd.linear.x=0.0;
    twist_cmd.linear.y=0.0;    
    twist_cmd.linear.z=0.0;
    twist_cmd.angular.x=0.0;
    twist_cmd.angular.y=0.0;
    twist_cmd.angular.z=0.0;   

    ros::Rate loop_timer(1/sample_dt); //create a ros object from the ros “Rate” class; set 100Hz rate     
    double timer=0.0;
    //start sending some zero-velocity commands, just to warm up communications with STDR
    //初始化
    for (int i=0;i<10;i++) {
      twist_commander.publish(twist_cmd);
      loop_timer.sleep();
    }

  //向前走3m
    twist_cmd.linear.x=speed; //command to move forward
    while(timer<time_3_sec) {
          twist_commander.publish(twist_cmd);
          timer+=sample_dt;
          loop_timer.sleep();
          }


//逆时针旋转90度
    twist_cmd.linear.x=0.0; //stop moving forward
    twist_cmd.angular.z=yaw_rate; //and start spinning in place
    timer=0.0; //reset the timer
    while(timer<time_3_sec) {
          twist_commander.publish(twist_cmd);
          timer+=sample_dt;
          loop_timer.sleep();
          }

//向前走3m
    twist_cmd.angular.z=0.0; //and stop spinning in place 
    twist_cmd.linear.x=speed; //and move forward again
    timer=0.0; //reset the timer
    while(timer<time_3_sec) {
          twist_commander.publish(twist_cmd);
          timer+=sample_dt;
          loop_timer.sleep();
          }

//顺时针旋转90度
    twist_cmd.angular.z=-0.5; 
    twist_cmd.linear.x=0; 
    timer=0.0; //reset the timer
    while(timer<time_3_sec) {
          twist_commander.publish(twist_cmd);
          timer+=sample_dt;
          loop_timer.sleep();
          }

//向前走3m
    twist_cmd.angular.z=0.0; //and stop spinning in place 
    twist_cmd.linear.x=speed; //and move forward again
    timer=0.0; //reset the timer
    while(timer<time_3_sec) {
          twist_commander.publish(twist_cmd);
          timer+=sample_dt;
          loop_timer.sleep();
          }

    //halt the motion
    twist_cmd.angular.z=0.0; 
    twist_cmd.linear.x=0.0; 
    for (int i=0;i<10;i++) {
      twist_commander.publish(twist_cmd);
      loop_timer.sleep();
    }               
    //done commanding the robot; node runs to completion
}

注：包可以自己建立，然后添加依赖项，roscpp以及geometry/Twist
ros中的单位都是国际化的，例如m/s,千克，rad/s等。
0.1rad/s 运行15s,相当于1.5rad大约90度。

可以看到运行节点后，机器人的初始状态以及最终状态。

红色代表仿真激光射线，绿色代表仿真的声纳信号。