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Experimental Study on Digital Brake Control for Maglev Trains
Published September 24, 1996 by Institution of Mechanical Engineers in United Kingdom
As a back-up brake system for Japanese MAG-LEV trains in case of the normal electric brake failure, carbon-carbon composite brake units are going to be used. In case of train brake, the equalization of absorbed energy into each brake unit needs to be considered from the viewpoints of unit capacity and disc wear life.
This report explains the torque limit control to get the energy equalization among numerous brake units in the train. As the first step, the dynamometer test using two brake units has been done to understand the torque behavior when having multiple brake units. As the next step, simulation study using MAT-LAB has been done to incorporate the experimentally obtained torque behavior appear in a computer calculation. The results show that the torque of two brake units tends to diverge due to the tire radius difference and the simulation can predict this behavior.