NDLI: Improve Hunting of a Railway Vehicle Using Semi-Active Primary Suspension

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Fotoohi, Abbas Yousefi-Koma, Aghil
Copyright Year	2006
Abstract	Hunting is a very common instability phenomenon in rail vehicles operating at high speeds. The hunting phenomenon is a self excited lateral oscillation produced by the forward speed of the vehicle and the wheel-rail interactive forces caused by the conicity of the wheel-rail contours and the friction-creep characteristics of the wheel-rail contact geometry. Hunting can lead to severe ride discomfort and eventual physical damage to wheels and rails. This research is conducted to demonstrate advantages of semi-active primary suspension in railway vehicle for control of hunting phenomenon. Semi-active suspension consists of some actuators on each bogie located in primary suspension position in addition to vertical passive dampers. A simple on-off switching is used here and the actuator force is determined regarding to wheelset displacement. An integration of a control design tool, i.e. MATLAB, together with a tool for railway vehicle simulation, i.e. ADAMS/Rail is utilized for modeling and control design simultaneously. Analysis has been performed on a traditional bogie model with passive primary suspension and on a new bogie model with semi-active suspension. The effects of semi-active suspension system on lateral displacement and yaw motion of wheelset have also been investigated. Results show that the semi-active suspension improves the stability by controlling displacement magnitude.
Starting Page	557
Ending Page	564
Page Count	8
File Format	PDF
ISBN	0791842509
DOI	10.1115/ESDA2006-95700
e-ISBN	0791837793
Volume Number	Volume 3: Dynamic Systems and Controls, Symposium on Design and Analysis of Advanced Structures, and Tribology
Conference Proceedings	ASME 8th Biennial Conference on Engineering Systems Design and Analysis
Language	English
Publisher Date	2006-07-04
Publisher Place	Torino, Italy
Access Restriction	Subscribed
Subject Keyword	Suspension Railway Hunting Active control Adams Actuators Railway vehicles Stability Creep Dampers Wheels Oscillations Displacement Yaw Vehicles Rails Design Geometry Railroads Fundamental forces (physics) Suspension systems Friction Simulation Control modeling Rail vehicles Damage Wheelsets Matlab
Content Type	Text
Resource Type	Article

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