The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2013
Filed:
May. 31, 2010
Oskar Johansson, Stockholm, SE;
Jörgen Hansson, Hägersten, SE;
Henrik Pettersson, Södertälje, SE;
Maria Södergren, Segeltorp, SE;
Oskar Johansson, Stockholm, SE;
Jörgen Hansson, Hägersten, SE;
Henrik Pettersson, Södertälje, SE;
Maria Södergren, Segeltorp, SE;
Scania CV AB, , SE;
Abstract
A method for regulating a vehicle's speed including the steps of: 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; and, for each segment within the horizon which is in a category indicating a steep upgrade or a steep downgrade, calculating the vehicle's final speed vafter the end of the segment, based inter alia on the entry speed vto the segment; and determining the entry speed vfor said segment based on the calculated final speed vend for the segment, which determination is defined by rules for said segment's category, so that the vehicle's final speed vis within the range defined by vand vfor the vehicle's current reference speed v, on the supposition that vis determined within the same range; and regulating the vehicle's speed according to speed set-point values vbased on the entry speeds vto each segment.