Development and test of active secondary suspension in a rail vehicle
2009 (English)In: Proceedings of the 21st International Symposium: Dynamics of Vehicles on Roads and Tracks, 2009Conference paper (Other academic)
This paper deals with a quarter-car rail vehicle model using active lateral secondary suspension. H∞ control theory is applied to the active suspension with the purpose of improving the dynamic performance of the vehicle. In H∞ control, weight functions are applied to certain signals in order to design the controller. Different combinations of signal weighting have been evaluated through simulations. The main goal is to minimise the carbody acceleration and hence improve ride comfort. Furthermore, the H∞ control theory is compared to sky-hook damping, which has been used in previous studies by the authors. Simulation results show that both control methods significantly improve the ride comfort as compared to a passive case. Compared to sky-hook damping, H∞ control provides more flexibility in the design process due to the possibility to control several parameters. Furthermore, H∞ control generates similar carbody accelerations at the same control force as sky-hook damping; however, the relative displacement is somewhat lower with H∞ control.
Place, publisher, year, edition, pages
Research subject Järnvägsgruppen - Gröna tåget
IdentifiersURN: urn:nbn:se:kth:diva-10444OAI: oai:DiVA.org:kth-10444DiVA: diva2:217411
21st International Symposium on Dynamics of Vehicles on Roads and Tracks. Stockholm, Sweden, 17-21 August 2009
QC 201010272009-05-142009-05-142011-12-05Bibliographically approved