Sökning: "ride comfort"

Visar resultat 1 - 5 av 21 avhandlingar innehållade orden ride comfort.

  1. 1. Ride Comfort Optimization of Buses

    Författare :Peter Eriksson; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; structural vibrations; FEM; global optimization; ride comfort; roll control system; MBS; optimization; bus; road irregularities; sensitivity analysis;

    Sammanfattning : As the design of buses is constantly improving, passengers are becoming more fastidious and the demand for a more comfortable travelling environment is constantly increasing. The main objective of this thesis is to contribute to the understanding of how the design of buses affects the ride comfort characteristics. LÄS MER

  2. 2. On Objective Measures for Ride Comfort Evaluation

    Detta är en avhandling från Stockholm : KTH

    Författare :Katrin Strandemar; Håkan Hjalmarsson; Staffan Nordmark; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ride; Objective evaluation; Vehicle dynamics; TECHNOLOGY Information technology Automatic control; TEKNIKVETENSKAP Informationsteknik Reglerteknik;

    Sammanfattning : An essential tool in the truck development process is the ability to quantify and grade vehicle dynamic behavior. Today this is performed either through subjective or objective tests. Subjective tests have the disadvantage that numerous factors influence test drivers’ opinions while objective measures have the advantage of repeatability. LÄS MER

  3. 3. Ride comfort and motion sickness in tilting trains

    Detta är en avhandling från Institutionen för farkostteknik

    Författare :Johan Förstberg; [2000]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tilting train; Ride comfort; Motion sickness; Simulator; Experiments;

    Sammanfattning : This thesis presents a systematic study of human responses to different motions and strategies of car body tilt control regarding ride comfort, working/reading ability and motion sickness on high-speed tilting trains. Experiments with test subjects were performed in a tilting train on curved track as well as in a moving vehicle simulator. LÄS MER

  4. 4. On Active Secondary Suspension in Rail Vehicles to Improve Ride Comfort

    Detta är en avhandling från Institutionen för farkostteknik

    Författare :Anneli Orvnäs; Sebastian Stichel; Rickard Persson; Roger Goodall; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; rail vehicle; active secondary suspension; ride comfort; sky-hook damping; H∞ control; multi-body simulations; on-track tests; Järnvägsgruppen - Gröna tåget; Järnvägsgruppen - Gröna tåget; Järnvägsgruppen - Fordonsteknik; Järnvägsgruppen - Fordonsteknik;

    Sammanfattning : One way to make rail vehicles a competitive means of transportation is to increase running speed. However, higher speeds usually generate increased forces and accelerations on the vehicle, which have a negative effect on ride comfort. With conventional passive suspension, it may be difficult to maintain acceptable passenger comfort. LÄS MER

  5. 5. Active Lateral Secondary Suspension in a High-Speed Train to Improve Ride Comfort

    Detta är en avhandling från Stockholm : KTH

    Författare :Anneli Orvnäs; Sebastian Stichel; Viktor Berbyuk; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; railway; active suspension; ride comfort; sky-hook; Hinf; multi-body simulations; on-track tests; TECHNOLOGY Engineering mechanics Vehicle engineering; TEKNIKVETENSKAP Teknisk mekanik Farkostteknik;

    Sammanfattning : Active secondary suspension in trains has been studied for a number of years, showing promising improvements in ride comfort. However, due to relatively high implementation and maintenance costs, active technology is not being used in service operation to a large extent. LÄS MER