METHOD AND MODULE FOR DETERMINING OF VELOCITY REFERENCE VALUES FOR A VEHICLE CONTROL SYSTEM

摘要

The invention relates to a method for determination of speed set-point values vref for a vehicle's control systems, which comprises: determining a horizon by means of position data and map data of an itinerary made up of route segments with length and gradient characteristics for each segment; calculating threshold values for the gradient of segments according to one or more vehicle-specific values, which threshold values serve as boundaries for assigning segments to various categories; comparing the gradient of each segment with the threshold values and placing each segment within the horizon in a category according to the results of the comparisons; calculating speed set-point values vref for the vehicle's control systems across the horizon according to rules pertaining to the classes in which segments within the horizon are placed; adding an offset voffset to the calculated speed set-point values vref when the vehicle is in a segment which is in a category indicating a steep upgrade or a steep downgrade; thereafter the vehicle is regulated according to the speed set-point values vref. The invention comprises also a module for determination of speed set-point values for a vehicle's control systems.