Line data    Source code

       1              : /****************************************************************************/
       2              : // Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
       3              : // Copyright (C) 2001-2025 German Aerospace Center (DLR) and others.
       4              : // This program and the accompanying materials are made available under the
       5              : // terms of the Eclipse Public License 2.0 which is available at
       6              : // https://www.eclipse.org/legal/epl-2.0/
       7              : // This Source Code may also be made available under the following Secondary
       8              : // Licenses when the conditions for such availability set forth in the Eclipse
       9              : // Public License 2.0 are satisfied: GNU General Public License, version 2
      10              : // or later which is available at
      11              : // https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
      12              : // SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
      13              : /****************************************************************************/
      14              : /// @file    MSCFModel_KraussPS.cpp
      15              : /// @author  Tobias Mayer
      16              : /// @author  Daniel Krajzewicz
      17              : /// @author  Jakob Erdmann
      18              : /// @author  Michael Behrisch
      19              : /// @author  Laura Bieker
      20              : /// @date    Mon, 04 Aug 2009
      21              : ///
      22              : // Krauss car-following model, changing accel and speed by slope
      23              : /****************************************************************************/
      24              : #include <config.h>
      25              : 
      26              : #include <utils/geom/GeomHelper.h>
      27              : #include <microsim/MSVehicle.h>
      28              : #include <microsim/MSLane.h>
      29              : #include "MSCFModel_KraussPS.h"
      30              : 
      31              : 
      32              : // ===========================================================================
      33              : // method definitions
      34              : // ===========================================================================
      35          131 : MSCFModel_KraussPS::MSCFModel_KraussPS(const MSVehicleType* vtype) :
      36          131 :     MSCFModel_Krauss(vtype) {
      37          131 : }
      38              : 
      39              : 
      40          262 : MSCFModel_KraussPS::~MSCFModel_KraussPS() {}
      41              : 
      42              : 
      43              : double
      44     45692996 : MSCFModel_KraussPS::maxNextSpeed(double speed, const MSVehicle* const veh) const {
      45     45692996 :     const double aBound = getCurrentAccel(speed);
      46     45692996 :     const double aMax = MAX2(0., aBound - GRAVITY * sin(DEG2RAD(veh->getSlope())));
      47              :     // special case for bicycles where getMaxSpeed() is not a a technical but a rather an individual power limit
      48     45692996 :     const double typeMax = myType->getMaxSpeed() * (veh->getVClass() == SVC_BICYCLE ? veh->getChosenSpeedFactor() : 1);
      49              :     // assuming drag force is proportional to the square of speed
      50     45692996 :     const double vMax = MAX2(
      51     45692996 :                             sqrt(aMax / getMaxAccel()) * typeMax,
      52              :                             // prevent emergency braking when inclination changes suddenly (momentum)
      53     45692996 :                             speed - ACCEL2SPEED(getMaxDecel()));
      54     45692996 :     return MAX2(
      55              :                // prevent stalling at low speed
      56              :                aBound / 2,
      57     45692996 :                MIN2(speed + ACCEL2SPEED(aMax), vMax));
      58              : }
      59              : 
      60              : 
      61              : MSCFModel*
      62            0 : MSCFModel_KraussPS::duplicate(const MSVehicleType* vtype) const {
      63            0 :     return new MSCFModel_KraussPS(vtype);
      64              : }
      65              : 
      66              : 
      67              : /****************************************************************************/