simulatedArm.cpp

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/****************************************************************
 *
 * Copyright (c) 2010
 *
 * Fraunhofer Institute for Manufacturing Engineering   
 * and Automation (IPA)
 *
 * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 *
 * Project name: care-o-bot
 * ROS stack name: cob_driver
 * ROS package name: cob_powercube_chain
 * Description: An interface class to a virtual manipulator.
 *                                                              
 * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 *                      
 * Author: Felix Geibel, email:Felix.Geibel@gmx.de
 * Supervised by: Alexander Bubeck, email:alexander.bubeck@ipa.fhg.de
 *
 * Date of creation: Oct 2007
 * ToDo:
 *
 * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 *
 * 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 Fraunhofer Institute for Manufacturing 
 *       Engineering and Automation (IPA) nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License LGPL as 
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License LGPL for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License LGPL along with this program. 
 * If not, see <http://www.gnu.org/licenses/>.
 *
 ****************************************************************/

#include <cob_powercube_chain/simulatedArm.h>
#include <cob_powercube_chain/simulatedMotor.h>
#include <math.h>

#define PSIM_CHECK_INITIALIZED() \
if ( isInitialized()==false )                                                                                   \
{                                                                                                                                               \
    m_ErrorMessage.assign("Manipulator not initialized.");              \
        return false;                                                                                                           \
}

simulatedArm::simulatedArm()
{
        std::cerr << "==============Starting Simulated Powercubes\n";
        m_DOF = 0;
        m_Initialized = false;
        m_motors.clear();
                        
}

simulatedArm::~simulatedArm()
{
        // nothing to do...
        ;
}

bool simulatedArm::Init(PowerCubeCtrlParams * params)
{
        m_DOF = params->GetNumberOfDOF();;
        
        double vmax = 1.0;
        double amax = 1.5;
        
        setMaxVelocity(vmax);
        setMaxAcceleration(amax);
        m_maxVel.resize(m_DOF);
        m_maxAcc.resize(m_DOF);
        
        std::vector<double> ul(m_DOF);
        std::vector<double> ll(m_DOF);
        ul = params->GetUpperLimits();
        ll = params->GetLowerLimits();
        m_maxVel = params->GetMaxVel();
        m_maxAcc =  params->GetMaxAcc();
        

        for (int i=0; i < m_DOF; i++)
        {
                m_motors.push_back( simulatedMotor(ll[i], ul[i], amax, vmax) );
        }
        std::cerr << "===========Initializing Simulated Powercubes\n";
        m_Initialized = true;
        return true;
}

bool simulatedArm::Stop()
{
        for (int i=0; i < m_DOF; i++)
                m_motors[i].stop();
        return true;
}

bool simulatedArm::MoveJointSpaceSync(const std::vector<double>& target)
{
        std::cerr << "======================TUTUTUTUT\n";
    PSIM_CHECK_INITIALIZED();


        std::vector<double> acc(m_DOF);
        std::vector<double> vel(m_DOF);
        
        double TG = 0;
        

        try 
        {               
                // Ermittle Joint, der bei max Geschw. und Beschl. am längsten braucht:

                std::vector<double> posnow;
                posnow.resize(m_DOF);
                if ( getConfig(posnow) == false )
                    return false;
                    
                std::vector<double> velnow;
                velnow.resize(m_DOF);
                if ( getJointVelocities(velnow) == false )
                    return false;
                        
                std::vector<double> times(m_DOF);

                for (int i=0; i < m_DOF; i++)
                {
                        RampCommand rm(posnow[i], velnow[i], target[i], m_maxAcc[i], m_maxVel[i]);
                        times[i] = rm.getTotalTime();
                }
                
                // determine the joint index that has the greates value for time
                int furthest = 0;
                
                double max = times[0];
        
            for (int i=1; i<m_DOF; i++)
            {
                    if (times[i] > max)
                    {
                            max = times[i];
                            furthest = i;
                    }
            }
                
                RampCommand rm_furthest(posnow[furthest], velnow[furthest], target[furthest], m_maxAcc[furthest], m_maxVel[furthest]);
                
                double T1 = rm_furthest.T1();
                double T2 = rm_furthest.T2();
                double T3 = rm_furthest.T3();
                
                // Gesamtzeit:
                TG = T1 + T2 + T3;
                
                // Jetzt Geschwindigkeiten und Beschl. für alle: 
                acc[furthest] = m_maxAcc[furthest];
                vel[furthest] = m_maxVel[furthest];
                
                for (int i = 0; i < m_DOF; i++)
                {
                        if (i != furthest)
                        {
                                double a; double v;
                                // a und v berechnen:
                                RampCommand::calculateAV(
                                        posnow[i], 
                                        velnow[i], 
                                        target[i], 
                                        TG, T3, 
                                        m_maxAcc[i],
                                        m_maxVel[i],
                                        a, 
                                        v);
                                                        
                                acc[i] = a;
                                vel[i] = v;
                        }
                }
        } 
        catch(...) 
        {
                m_ErrorMessage.assign("Problem during calculation of a and av.");
                return false;
        }
                
        // Jetzt Bewegung starten:      
        for (int i=0; i < m_DOF; i++)
        {
                std::cout << "moving motor " << i << ": " << target[i] << ": " << vel[i] << ": " << acc[i] << "\n";
                m_motors[i].moveRamp(target[i], vel[i], acc[i]);
        }
        
        return true;    
}

bool simulatedArm::MoveVel(const std::vector<double>& Vel)
{
    PSIM_CHECK_INITIALIZED();

//      std::cerr << ".";
//      std::cerr << "Vels: ";
        for (int i=0; i < m_DOF; i++)
        {
//              std::cerr << Vel[i] << " ";
                m_motors[i].moveVel(Vel[i]);
        }
//      std::cerr << "\n";
        return true;
}       


bool simulatedArm::MovePos(const std::vector<double>& Pos)
{
    PSIM_CHECK_INITIALIZED();

        for (int i=0; i < m_DOF; i++)
                m_motors[i].movePos(Pos[i]);
        
        return true;
}       

        
// Funktionen zum setzen von Parametern: //

bool simulatedArm::setMaxVelocity(double radpersec)
{
    PSIM_CHECK_INITIALIZED();
    
    m_maxVel.resize(m_DOF);

        for (int i=0; i < m_DOF; i++)
        {
                m_maxAcc[i] = radpersec;
                m_motors[i].setMaxVelocity(radpersec);
        }
        
        return true;
}

bool simulatedArm::setMaxVelocity(const std::vector<double>& radpersec)
{
    PSIM_CHECK_INITIALIZED();
    
    m_maxAcc = radpersec;

        for (int i=0; i < m_DOF; i++)
                m_motors[i].setMaxVelocity(radpersec[i]);
        
        return true;
}

bool simulatedArm::setMaxAcceleration(double radPerSecSquared)
{
    PSIM_CHECK_INITIALIZED();

        for (int i=0; i < m_DOF; i++)
                m_motors[i].setMaxAcceleration(radPerSecSquared);
        
        return true;
}

bool simulatedArm::setMaxAcceleration(const std::vector<double>& radPerSecSquared)
{
    PSIM_CHECK_INITIALIZED();

        for (int i=0; i < m_DOF; i++)
                m_motors[i].setMaxAcceleration(radPerSecSquared[i]);
        
        return true;
}


// hier die Funktionen zur Statusabfrage: //
                
                
bool simulatedArm::getConfig(std::vector<double>& result)
{
    PSIM_CHECK_INITIALIZED();

        result.resize(m_DOF);
        for (int i=0; i < m_DOF; i++)
        {
                result[i] = m_motors[i].getAngle();
        }
        
        return true;
}       

bool simulatedArm::getJointVelocities(std::vector<double>& result)
{
    PSIM_CHECK_INITIALIZED();

        result.resize(m_DOF);
        for (int i=0; i < m_DOF; i++)
        {
                result[i] = m_motors[i].getVelocity();
        }
        
        return true;
}       

bool simulatedArm::statusMoving()
{
    PSIM_CHECK_INITIALIZED();

        for(int i=0; i<m_DOF; i++)
        {       
                if (m_motors[i].statusMoving())
                        return true;
        }
        return false;
}
                

bool simulatedArm::statusDec()
{
    PSIM_CHECK_INITIALIZED();

        for(int i=0; i<m_DOF; i++)
        {       
                if (m_motors[i].statusDec())
                        return true;
        }
        return false;
}

bool simulatedArm::statusAcc()
{
    PSIM_CHECK_INITIALIZED();

        for(int i=0; i<m_DOF; i++)
        {       
                if (m_motors[i].statusAcc())
                        return true;
        }
        return false;
}

---

cob_powercube_chain
Author(s): Florian Weisshardt
autogenerated on Fri Jan 11 09:14:20 2013