Date on Master's Thesis/Doctoral Dissertation

12-2010

Document Type

Master's Thesis

Degree Name

M.S.

Department

Industrial Engineering

Committee Chair

Biles, William E.

Subject

Railroads--Brakes--Testing--Computer simulation

Abstract

Wheel Slide Protection Systems (WSP Systems) or Anti-Skid Devices for rail vehicles have to go through a series of Dynamometer tests before test runs with equipped rail vehicles are permitted. The simulation tests are performed on Wheel Slide Protection Dynamometers (WSPD). The WSPD used for the tests in this thesis is placed in the laboratory of DB Systemtechnik in Germany. The function of a WSPD and possible improvements, which have been suggested by the UIC Report 2 of the task group B164, are discussed within the thesis. One of the improvements is the implementation of adhesion curves in the simulation that are dependent of the wheel slip velocity. The implementation of this improvement in the named WSPD algorithm is explained as well the findings of a before and after test. The conclusion show that adhesion dependent wheel slip curves in the simulation algorithm of a WSPD are necessary to test a WSP Systems ability of finding the maximum adhesion during the braking process.

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