Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
The purpose of this thesis work is to investigate the approach of using model-based articulationdamping control for an articulated bus. The focus is on situations where rear-section oscillations can occur.The contents of the thesis work involve investigation and evaluation of an existing simple vehicle model and the design and evaluation of an articulation damping controller. The goal is a better behavior of the bus than when using the current system used in Scania buses (ACS5).The vehicle model is examined by analyzing the effects of some of the various approximationsindividually. The conclusion is that the various approximations are acceptable for the focus situations, especially since the vehicle model is not used in such a manner that it needs to be precise.The simulation environment, including an extended vehicle model and a road-follow algorithm is described. It is also discussed what in the results, based on simulations, can and cannot be used to draw conclusions from.The controller is tested by examining different control error options, where the control error is either the articulation angle, articulation angular velocity or a combination of both. Comparisons are also made with ACS5. The results show that, using this simulation environment, control based on articulation angular velocity creates the best behavior of the three options; it also seems to work better than ACS5.Additional ideas and suggestions for improvement are presented and discussed.
Place, publisher, year, edition, pages
2013. , 85 p.
Teknik, Ledkontroll, ledbuss, reglerteknik
IdentifiersURN: urn:nbn:se:ltu:diva-47015Local ID: 49ac68ec-46d9-4a02-bc93-ad72e7b3516aOAI: oai:DiVA.org:ltu-47015DiVA: diva2:1020331
Subject / course
Student thesis, at least 30 credits
Space Engineering, master's level
Validerat; 20131021 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved