Lobatiuk Y. Methods and means for technical diagnostics of breaking systems of electric vehicles

The object of the study are processes of diagnosing the main functional units of electrical electric train complex. The aim of the thesis - improving the reliability of such an important functional unit of electrical electric train complex, which is the braking system, by creating mathematical models and devices for diagnostics of mechanical and pneumatic subsystems and electrical subsystems as a decision support system for the detection of faults on the route. Methods: methods of theoretical mechanics and mathematical analysis, methods aerodynamics and the theory of differential equations in partial derivatives, methods of identification of dynamical systems, finite-state machine and sequential analysis. Theoretical results: ffor the first time proposed a new method of diagnosing the wear of brake pads braking system consisting of electrical electric train set that allows you to measure the level of wear of each brake pad during its normal operation by means available to measure indirect parameters; a mathematical model for diagnosing pneumatic brake system electric train line to identify which is sufficient to know only the basic settings mode of the electrical sector; first developed diagnostic method and apparatus for automatically determining the injury pneumatic highway while driving electric trains; first synthesized sequential model of electrical subsystems electric train braking system by which improved decision support system to identify the driver of an electric brake system malfunctions electric train during its movement. Practical results: block diagrams of devices was developed for diagnostics during normal operation of important functional blocks of complex electrical electric trains, which are mechanical and pneumatic subsystems brake system electric locomotives and functionally linked to them electrical subsystem on which is easy to implement integrated microprocessor device that is installed on control panel in the cab of the train with electric locomotive traction and allows the driver to respond quickly to malfunctions in the brake system of electric trains. The degree of implementation - individual results obtained in the thesis, accepted for proceedings in a secluded section "Locomotive depot Zhmerinka" state territorial branch of the "South-Western Railway" accepted for introduction of separate subdivision "Carriage Depot Zhmerinka" state territorial branch of the "South-Western Railway and introduced in the educational process Vinnytsia National Technical University. The scope (area) of application: railway industry.