The Use of Positioning Systems for Look-Ahead Control in Vehicles
Independent thesis Advanced level (degree of Magister), 20 points / 30 hpStudent thesisAlternative title
Användning av positioneringssystem för prediktiv reglering av fordon (Swedish)
The use of positioning systems in a vehicle is a research intensive field. In the first part of this thesis an increase in new applications is disclosed through a mapping of patent documents on how positioning systems can support adaptive cruise control, gear changing systems and engine control. Many ideas are presented and explained and the ideas are valued. Furthermore, a new method for selective catalytic reduction (SCR) control using a positioning system is introduced. It is concluded that look-ahead control, where the vehicle position in relation to the upcoming road section is utilized could give better fuel efficiency, lower emissions and less brake, transmission and engine wear.
In the second part of this thesis a real time test platform for predictive speed control algorithms has been developed and tested in a real truck. Previously such algorithms could
only be simulated. In this thesis an algorithm which utilizes model predictive control (MPC) and dynamic programming (DP) been implemented and evaluated. An initial comparative fuel test shows a reduction in fuel consumption when the MPC algorithm is used.
Place, publisher, year, edition, pages
Institutionen för systemteknik , 2006. , 110 p.
Model Predictive Control, Dynamic Programming, Look-Ahead, Vehicles, Patents, Speed control, Positioning systems
IdentifiersURN: urn:nbn:se:liu:diva-6193ISRN: LITH-ISY-EX--06/3776--SEOAI: oai:DiVA.org:liu-6193DiVA: diva2:21687
2006-03-31, Systemet, B-huset, Campus Valla, Linköping, 13:15
Axehill, DanielEgrelius, Fredrik