Methods, Data Processing Device and Software for Determining a Deceleration Strategy for a Vehicle

A method for determining a deceleration strategy for a vehicle, the method comprising:

• determining a target position that lies on a route section ahead of the vehicle together with a target speed at which the vehicle should be when reaching the target position, wherein the target speed is less than a current speed of the vehicle;
• and
• determining a reference trajectory for the vehicle that makes provision to reach the target position at the target speed,
• wherein the reference trajectory is determined based on analytical functions for at least two deceleration modes from a list including
• a sailing mode,
• a drag mode,
• a recuperation mode, and
• active braking,
• wherein the analytical functions for each of the at least two deceleration modes indicate a speed and/or a distance traveled as a function of a time variable, and
• wherein determining the reference trajectory includes determining one or more changeover times between the at least two deceleration modes based on the analytical functions.

A method for determining a deceleration strategy for a vehicle, the method comprising:

• determining a target position that lies on a route section ahead of the vehicle together with a target speed at which the vehicle should be when reaching the target position, wherein the target speed is less than a current speed of the vehicle;
• and
• determining a reference trajectory for the vehicle that makes provision to reach the target position at the target speed,
• wherein the reference trajectory has at least two deceleration phases in which the vehicle is operated in each case in a different deceleration mode from a list including
• a sailing mode,
• a drag mode,
• a recuperation mode, and
• active braking,
• wherein the determining the reference trajectory includes determining one or more changeover times between the at least two deceleration modes,
• wherein the one or more changeover times are determined based on minimizing a cost function,
• wherein the cost function comprises a sum of multiple time integrals,
• wherein each of the multiple time integrals extends temporally over a respective one of the deceleration phases,
• wherein the one or more changeover times form upper or lower integral bounds of the multiple time integrals, and
• wherein the cost function under the multiple time integrals for the at least two deceleration phases has a respective time-dependent cost term that applies costs to a loss of kinetic energy that has taken place up to a first time in comparison to an initial kinetic energy that the vehicle has at a start of the deceleration.