Wheelsets, which are commonly used in railroad construction, must be rigidly coupled at high speeds to ensure driving stability. Increased wear due to the suppressed, system-inherent instability is the consequence. Independently rotating wheels can enable very high speeds with a simple mechanical design, but they have no good curving performance. The use of steered independently rotating wheels combines the advantages of both principles. Yet, many control strategies are based on the direct measurement of lateral deflection and inclination of the wheels relative to the rails. Practically, this cannot be implemented with the needed reliability. In this thesis, the measurement of wheel-rail guiding forces is used for the radial adjustment of the wheels. After an analysis of the state of the art, the theoretical background and the structure of the simulation model is described. Various possibilities of actuation and different principles of mechatronic undercarriages are presented. The need for a robust recording of measurement signals is demonstrated, as well as the benefits of radial adjustment of the wheels relative to the track. Simulations in the multi-body program SIMPACK and in MATLAB-Simulink show the functionality of such a control. The measurement signals are superposed with an interfering signal and with a deviation to generate realistic conditions for testing. A track with stochastic irregularities shows the functionality of the control. The track has supercritical parameters to work even in exceptional circumstances. Rail-suitable sensors are selected, and a failure concept is presented, as well as the ability to brake or drive the wheels of the undercarriage. The safety against derailment is evaluated. The wear of the developed undercarriage is compared with the wear of unsteered independently rotating wheels and with conventional wheelsets. A practical verification of the presented control is an aim for future research


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    Title :

    Spurführungskräftebasierte Regelung eines nicht angetriebenen mechatronischen Losradfahrwerks


    Additional title:

    Wheel-rail-force based control of a non-driven independently rotating wheelset


    Contributors:

    Publication date :

    2019-01-01


    Size :

    1 Online-Ressource (183 Seiten) : Illustrationen pages


    Remarks:

    Dissertation, RWTH Aachen University, 2019; Düren : Shaker Verlag, Berichte aus der Fahrzeugtechnik 1 Online-Ressource (183 Seiten) : Illustrationen (2019). = Dissertation, RWTH Aachen University, 2019



    Type of media :

    Miscellaneous


    Type of material :

    Electronic Resource


    Language :

    German