Stability and Ride Comfort Performance of Three-Axle City Buses due to the Third Axle Position: A Comparative Approach
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Abstract
The efficiency of public transport is fundamental for the city traffic. Taking this as a goal and linking with the financial and structural situations of each market, new technologies regarding city buses have emerged in recent years and one of them is studied in a comparative way in the present work. A new city bus which has 15 meters length, front-engine and three-axles. The great difference of this vehicle is the positioning of the third axle near to the front axle of the vehicle instead of the traditional configuration whereupon this axle is located near the rear axle. With the aid of MATLAB/Simulink, the two mentioned vehicle models were generated with eighteen degrees of freedom and were tested in two different manoeuvrers, passing through a bump and then a sequence of turns. At the end of the work, it was possible to conclude that the new city bus presents less oscillations in terms of roll and pitch angles in addition to smaller vertical displacements for the same proposed manoeuvre, which leads to greater passenger comfort.
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