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Title: Carbody tilting - technologies and benefits
Authors: Persson, Rickard
Goodall, Roger M.
Sasaki, Kimiaki
Keywords: Tilting trains
Active tilt
Natural tilt
Tilting technology
Tilting control
Running time
Ride comfort
Motion sickness
Issue Date: 2009
Publisher: © Taylor & Francis
Citation: PERSSON, R., GOODALL, R.M. and SASAKI, K., 2009. Carbody tilting - technologies and benefits. Vehicle System Dynamics, 47(8), pp. 949-981.
Abstract: Carbody tilting is today a mature and inexpensive technology allowing higher speeds in curves and thus reduced travel time. The technology is accepted by many train operators. Today more than 5000 tilting vehicles, defined as tilting carbodies, have been produced world-wide by di erent suppliers. Tilting trains can be divided into naturally tilted trains and actively tilted trains. However, also natural tilting will often include actuation to ensure satisfactory dynamic performance. The mechanical solutions for tilting involving pendulums or rollers are well proven. They have also become compact enough to avoid passenger area intrusion. The proportion of the lateral acceleration compensated by tilt has decreased over the years. In the early days of tilting train development, it was often assumed that the compensation should be 100%. Compensation of 50-70% are typically used in today's active tilting trains, while natural tilting ones still retain compensation close to 100%. Recent developments in control have provided the market with more clever systems erasing the former problem with time delays. The result is bene cial for both ride comfort and low risk of motion sickness. As an example, running time simulations on the Swedish mainline Stockholm-Gothenburg have shown that the running time benefit for a tilting train vs. a non-tilting train, both with a top speed 275km/h, is about 10%.
Description: This article was accepted for publication in the journal, Vehicle System Dynamics [© Taylor & Francis] and the definitive version is available at: http://dx.doi.org/10.1080/00423110903082234
Version: Accepted for publication
DOI: 10.1080/00423110903082234
URI: https://dspace.lboro.ac.uk/2134/6006
ISSN: 0042-3114
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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