Heiko H. Models, methods and software components of the diesel-train onboard computer system

The dissertation solves the scientific and practical problem of development and researching models, methods and software components of the diesel-train onboard computer control system to clarify the traction calculations method. The dissertation proposes a method and a software component that identifies the parameters of the diesel-train model and takes into account changes in the parameters of the electric drive during the movement of the diesel-train, it also adjusts the electric drive model parameters in real time, which makes it possible to calculate the control actions parameters to control the object. A method and a software component, that implements the calculation of the stator current value of each traction asynchronous motor not by the mean, but by the effective value of its first harmonic, have been developed, it made possible to clarify the law of the electric drive control. A mathematical model, that allows to research the processes of the electric drive that occur during slipping of the wheelsets, has been developed. A method and a software component for detecting the slipping of the wheelsets of a diesel train using fuzzy logic has been proposed, the usage of which allows to detect a synchronous and an individual wheelsets slipping, reduce the time of detection of the wheelsets slipping and improve the traction properties of the diesel-train. A software component that implements the algorithm of the recurrent neural network, which, along with identifying the deviation of parameters from the optimal values at each position of the train driver controller, provides operational control of exceeding the object’s limit values and defines the processes that are associated with the nodes of the object that operate in the abnormal mode, has been developed. That improved the quality of control and diagnostics of the diesel-train. Experimental studies of the improved computer control system of the diesel-train DEL-02, at the level of mathematical modeling and at the real facility, confirmed the validity of the proposed solutions to clarify the traction calculations method.