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dc.contributor.advisorRAJAGOPAL,K.Ren_US
dc.contributor.advisorSWAROOP, D.V.A.H.Gen_US
dc.creatorRamaratham, Srivatsanen_US
dc.date.accessioned2008-10-10T21:01:28Z
dc.date.available2008-10-10T21:01:28Z
dc.date.created2008-08en_US
dc.date.issued2008-10-10
dc.identifier.urihttp://hdl.handle.net/1969.1/86043
dc.description.abstractThis thesis deals with the development of a mathematical model for an air brake system in the presence of leaks. Brake systems in trucks are crucial for ensuring the safety of vehicles and passengers on the roadways. Most trucks in the US are equipped with S-cam drum brake systems and they are sensitive to maintenance. Brake defects such as leaks are a major cause of accidents involving trucks. Leaks in the air brake systems affect braking performance drastically by decreasing the peak braking pressures attained and also increasing the time required to attain the same, thereby resulting in longer stopping distances. Hence there is a need for detecting leaks in an air brake system. In this thesis, a mathematical model for an air brake system in the presence of leaks is developed with a view towards developing an automatic leak detection system in the near future. The model developed here builds on an earlier research at Texas A&M University in which a "fault free" model of an air brake system is developed, i.e., a mathematical model of an air brake system that predicts how the pressure in the brake chamber evolves as a function of the brake pedal input when there are no leaks in the air brake system.In order to develop a model for an air brake system in the presence of leaks, one must characterize a "leak". A leak may be characterized by the location and its size. Since the pipes are short, the location of the leak does not significantly affect the evolution in the brake pressure as much as its size. For this reason, "effective area" of the leak was chosen as a characteristic of the leak. It was estimated by fitting an empirical relation for leak with leak flow measurement data. The supply pressure and effective area of leak comprised the inputs to the model along with the displacement of the foot pedal (treadle valve plunger). The model was corroborated with the experimental data collected using the setup at Texas A&M University.en_US
dc.format.mediumelectronicen_US
dc.language.isoen_USen_US
dc.publisherTexas A&M Universityen_US
dc.subjectLEAKSen_US
dc.subjectBRAKESen_US
dc.subjectMATHEMATICAL MODELen_US
dc.subjectAIR BRAKE SYSTEMen_US
dc.subjectTRUCKSen_US
dc.titleA mathematical model for air brake systems in the presence of leaksen_US
dc.typeBooken
dc.typeThesisen
thesis.degree.departmentMechanical Engineeringen_US
thesis.degree.disciplineMechanical Engineeringen_US
thesis.degree.grantorTexas A&M Universityen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelMastersen_US
dc.contributor.committeeMemberWALTON, JAY ROBERTen_US
dc.type.genreElectronic Thesisen_US
dc.type.materialtexten_US
dc.format.digitalOriginborn digitalen_US


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