pr2_base_controller2_safe.h

Go to the documentation of this file.

/*********************************************************************
 * Software License Agreement (BSD License)
 *
 *  Copyright (c) 2009, Willow Garage, Inc.
 *  Copyright (c) 2010, Bosch LLC
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *   * Neither the name of the Willow Garage nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 *  ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 *********************************************************************/
/*
 * Author: Sachin Chitta and Matthew Piccoli (Willow Garage)
 *         Sebastian Haug (Bosch LLC)
 */

#include <ros/node_handle.h>
#include <realtime_tools/realtime_publisher.h>
#include <pr2_mechanism_controllers/BaseControllerState2.h>
#include <robot_mechanism_controllers/joint_velocity_controller.h>
#include <pr2_mechanism_controllers/base_kinematics.h>
#include <geometry_msgs/Twist.h>
#include <angles/angles.h>
#include <boost/shared_ptr.hpp>
#include <boost/scoped_ptr.hpp>
#include <boost/thread/condition.hpp>
#include <filters/transfer_function.h>

#include <safe_base_controller/TwistLimits.h>

namespace controller
{
  class Pr2BaseController2Safe: public pr2_controller_interface::Controller
  {
    public:
      Pr2BaseController2Safe();

      ~Pr2BaseController2Safe();

      /*
       * \brief  The starting method is called by the realtime thread just before
       * the first call to update.  Overrides Controller.staring().
       * @return Successful start
       */
      void starting();

      bool init(pr2_mechanism_model::RobotState *robot, ros::NodeHandle &n);

      /*
       * \brief callback function for setting the desired velocity using a topic
       * @param cmd_vel Velocity command of the base in m/s and rad/s
       */
      void setCommand(const geometry_msgs::Twist &cmd_vel);

      geometry_msgs::Twist getCommand();

      BaseKinematics base_kinematics_;

      pthread_mutex_t pr2_base_controller_lock_;

      void update();

      void setJointCommands();

      void setDesiredCasterSteer();

    private:

      ros::NodeHandle node_;

      ros::NodeHandle root_handle_;

      ros::Subscriber cmd_sub_;

      ros::Subscriber cmd_sub_deprecated_;

      ros::Subscriber sub_cmd_limits;

      bool paused_;

      double timeout_;

      double timeout_vel_limits_;

      bool new_cmd_available_;

      ros::Time last_time_;

      ros::Time cmd_received_timestamp_;

      geometry_msgs::Twist cmd_vel_t_;

      geometry_msgs::Twist cmd_vel_;

      geometry_msgs::Twist desired_vel_;

      geometry_msgs::Twist max_vel_;

      geometry_msgs::Twist max_accel_;

      double max_translational_velocity_;

      double max_rotational_velocity_;

      double kp_caster_steer_;

      double alpha_stall_;

      std::vector<boost::shared_ptr<JointVelocityController> > wheel_controller_;

      std::vector<boost::shared_ptr<JointVelocityController> > caster_controller_;

      boost::scoped_ptr<realtime_tools::RealtimePublisher<pr2_mechanism_controllers::BaseControllerState2> > state_publisher_;

      void computeJointCommands(const double &dT);

      void updateJointControllers();

      void computeDesiredCasterSteer(const double &dT);

      void computeDesiredWheelSpeeds(const double &dT);

      void setDesiredWheelSpeeds();

      geometry_msgs::Twist interpolateCommand(const geometry_msgs::Twist &start, const geometry_msgs::Twist &end, const geometry_msgs::Twist &max_rate, const double &dT);

      void commandCallback(const geometry_msgs::TwistConstPtr& msg);

      void cmdLimitsCB(const safe_base_controller::TwistLimits &cmd_limits);

      double safe_max_x_;

      double safe_min_x_;

      double safe_max_y_;

      double safe_min_y_;

      double safe_max_z_;

      double safe_min_z_;

      ros::Time cmd_limits_timestamp_;

      geometry_msgs::Twist base_vel_msg_;

      double eps_;

      double cmd_vel_rot_eps_;

      double state_publish_time_, state_publish_rate_;

      ros::Time last_publish_time_;

      double cmd_vel_trans_eps_;


      void publishState(const ros::Time &current_time);

      bool publish_state_;

      std::vector<control_toolbox::Pid> caster_position_pid_;

      filters::MultiChannelTransferFunctionFilter<double> caster_vel_filter_;

      std::vector<double> filtered_velocity_;

      filters::MultiChannelTransferFunctionFilter<double> wheel_vel_filter_;

      std::vector<double> filtered_wheel_velocity_;

      std::vector<control_toolbox::Pid> wheel_pid_controllers_;
  };

}

---

safe_base_controller
Author(s): Sebastian Haug, Sachin Chita, John Hsu, Melonee Wise
autogenerated on Fri Jan 11 10:03:26 2013