Active radial technology can effectively improve the curving performance of rail vehicles. The curvature of track is the key parameter of active radial system. In order to acquire this parameter in real time, a new method of curvature measurement based on secondary suspension rotation angle sensing is proposed in this paper. It is proved that this scheme can measure the curvature with small error and high synchronisation by theoretical deduction and simulation. Then, based on the curvature measurement scheme, an active radial system for rail vehicles is proposed, with emphasis on the design of an integrated device for wheelset constraints and actuator. Subsequently, the physical model of the actuator is established, and its dynamic response characteristics under typical working conditions are determined. Finally, the effect of the active radial technology of railway vehicles based on secondary suspension rotation angle sensing is analysed by the whole vehicle dynamic model with active radial function. The results show that the curvature measurement scheme is feasible, the curving performance of a rail vehicle under active radial control is improved significantly, and the thrust of the actuator is low. The research results can provide an engineering reference for real-time curvature measurements and active radial systems.
Active radial system of railway vehicles based on secondary suspension rotation angle sensing
Vehicle System Dynamics ; 59 , 5 ; 765-784
2021-05-04
20 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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