better commande node
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Louis-Guillaume DUBOIS
parent
9a024fd8c2
commit
97c07c8eaa
198
src/commande.cpp
198
src/commande.cpp
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@ -1,100 +1,142 @@
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#include <ros/ros.h>
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#include <ros/time.h>
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#include <locale.h>
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#include <limits>
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#include <pcl_ros/point_cloud.h>
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#include <pcl/point_types.h>
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#include <hand_control/Plan.h>
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#include <geometry_msgs/Twist.h>
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#include <math.h>
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class Run
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{
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private:
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float z_previous;
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ros::Time t_previous;
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ros::Time t_current;
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ros::Rate loop_rate;
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float dz;
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float xx;
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float yy;
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float zz;
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float x_speed;
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float y_speed;
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float z_speed_max;
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float precision;
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public:
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Run() :
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x_speed(0.2),
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y_speed(0.2),
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z_speed_max(0.5),
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loop_rate(30)
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{
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//Sensibilité du drône
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precision = 0.1;
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}
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private:
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ros::Rate loop_rate;
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void operator()(const hand_control::Plan::ConstPtr& msg)
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{
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t_current = msg->header.stamp;
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dz = (msg->normal.z - z_previous)/(t_current.sec - t_previous.sec);
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xx = msg->normal.x ;
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yy = msg->normal.y ;
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//zz = msg->normal.z ;
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t_previous = msg->header.stamp;
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z_previous = msg->normal.z;
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};
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// xx*plan_vel, yy*plan_vel and dz*dz_vel will be published
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double xx, yy, dz;
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double plan_vel, z_vel;
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void run(){
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//pour initialiser mvt (twist)
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geometry_msgs::Twist::Ptr mvt_init(new geometry_msgs::Twist());
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mvt_init->linear.x = mvt_init->linear.y = mvt_init->linear.z =
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mvt_init->angular.x = mvt_init->angular.y = mvt_init->angular.z = 0.;
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while(ros::ok()){
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geometry_msgs::Twist::Ptr mvt(new geometry_msgs::Twist());
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mvt = mvt_init;
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//mouvement selon z
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if (dz < z_speed_max){ //pour éviter un soulèvement trop prompt du drône
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mvt->linear.z = dz *0.1 ;
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}
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//mouvement selon x ou y
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if (fabs(xx) > precision && fabs(yy) > precision )
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{
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mvt->linear.x = x_speed ;
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mvt->linear.y = y_speed ;
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}
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ros::spinOnce();
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loop_rate.sleep();
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}//end while
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}//end run
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}; //class Callback
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// to calculate dz
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double z_current, z_previous;
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ros::Time t_current, t_previous;
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// conditions to publish a message
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double max_curv;
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double dz_min, x_dev_min, y_dev_min;
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bool first_msg;
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ros::Publisher pub;
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public:
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Run(ros::Publisher cmd_pub, double M_curve, double p_vel, double h_vel, double x_dev_m, double y_dev_m, double dz_m) :
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pub(cmd_pub),
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plan_vel(p_vel),
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max_curv(M_curve),
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z_vel(h_vel),
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loop_rate(30),
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xx(0),
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yy(0),
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dz(0),
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x_dev_min(x_dev_m),
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y_dev_min(y_dev_m),
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dz_min(dz_m),
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first_msg(true) {
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z_current = z_previous = std::numeric_limits<double>::signaling_NaN();
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t_previous.nsec = t_previous.sec =
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t_previous.nsec = t_previous.sec = std::numeric_limits<uint32_t>::signaling_NaN();
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}
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void operator()(const hand_control::Plan::ConstPtr& msg)
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{
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if (msg->curvature < max_curv)
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{
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t_current = msg->header.stamp;
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z_current = msg->normal.z;
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if (!first_msg)
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dz = (z_current - z_previous)/((t_current - t_previous).toSec());
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xx = msg->normal.x;
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yy = msg->normal.y;
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t_previous = t_current;
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z_previous = z_current;
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z_current = std::numeric_limits<double>::signaling_NaN();
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t_current.nsec = t_current.sec = std::numeric_limits<uint32_t>::signaling_NaN();
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if (first_msg) first_msg = false;
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}
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};
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void run()
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{
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geometry_msgs::Twist zero;
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zero.linear.x = zero.linear.y = zero.linear.z =
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zero.angular.x = zero.angular.y = zero.angular.z = 0.;
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while(ros::ok())
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{
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geometry_msgs::Twist::Ptr mvt(new geometry_msgs::Twist());
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*mvt = zero;
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if (dz > dz_min)
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mvt->linear.z = dz * z_vel;
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if (xx > x_dev_min)
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mvt->linear.x = xx * plan_vel;
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if (yy > y_dev_min)
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mvt->linear.y = yy * plan_vel;
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pub.publish(mvt);
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ros::spinOnce();
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loop_rate.sleep();
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}//end while
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}//end run
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};
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int main(int argc, char** argv)
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{
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ros::init(argc, argv, "commande");
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Run run;
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run.run();
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ros::NodeHandle node("commande");
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double max_curv(0);
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if (node.getParam("max_curv", max_curv))
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{
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ROS_INFO("max_curv : %f" , max_curv);
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} else {
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node.setParam("max_curv", 0.1);
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node.getParam("max_curv", max_curv);
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ROS_INFO("max_curv : %f (default value)", max_curv);
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}
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double plan_vel(0);
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if (node.getParam("plan_vel", plan_vel))
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{
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ROS_INFO("plan_vel : %f" , plan_vel);
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} else {
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node.setParam("plan_vel", 0.8);
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node.getParam("plan_vel", plan_vel);
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ROS_INFO("plan_vel : %f (default value)", plan_vel);
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}
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double z_vel(0);
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if (node.getParam("z_vel", z_vel))
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{
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ROS_INFO("z_vel : %f" , z_vel);
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} else {
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node.setParam("z_vel", 0.8);
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node.getParam("z_vel", z_vel);
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ROS_INFO("z_vel : %f (default value)", z_vel);
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}
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ros::Publisher cmd_pub = node.advertise<geometry_msgs::Twist>("/cmd_vel", 1);
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Run run(cmd_pub, max_curv, plan_vel, z_vel, 0.05, 0.05, 0.05);
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ros::Subscriber plan_sub = node.subscribe<hand_control::Plan>("input", 1, run);
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run.run();
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return 0;
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}
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