Енергетика та системи керування
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Item Dynamic simulation of a load system driven by two identical PMDC motors(Видавництво Львівської політехніки, 2013) Atalay, Ahmet Kubilay; Kocabas, Derya Ahmet; Basdogan, SedaIn this study, dynamic simulation of a load system driven by two identical permanent magnet direct current (PMDC) motor is performed by MATLAB / SIMULINK. In the dynamic simulation, two equivalent motors are tandem operated both at same voltage and different voltages in order to drive a mechanical load. The current of each motor, total induced torque and steady state speed of the entire drive system are obtained. It is seen that, when the motors are supplied by the same voltage they share the load equally. On the other hand, if they are operated with different voltages, the motor which is supplied with lower voltage always operates as a generator and the motor which is supplied with higher voltage is overloaded in order to supply the other one and drive the mechanical load.Item Mathematical model of the inertial object programmed control method(Видавництво Львівської політехніки, 2011) Gapon, Anatoly; Savitskiy, Sergey; Rudakova, NataliaThe article deals with the development of the extrapolator mathematical model of the software management system for the objects with the distributed parameters, which possess properties of the linear object with self-alignment.Item Застосування критерію ефективності використання ресурсів для визначення ефективності застосування рудничного електровозного транспорту(Видавництво Національного університету «Львівська політехніка», 2009) Омельченко, Олександр; Титюк, Валерій; Луценко, ІгорThe analysis of efficiency of use of the traction electric drive of a miner electric locomotive by criterion of efficiency of use of resources is made.Item Макромоделювання електромеханічних перетворювачів(Видавництво Національного університету «Львівська політехніка», 2009) Васильчишин, ІваннаThe problem of mathematical macromodels creation for electromechanical converters analysis is considered. Linear and nonlinear macromodels of induction motor are developed. The waveforms of transient processes were obtained using proposed macromodel and compared with experimental data received on the basis of detailed mathematical model and adeguancy of obtained models was verifiend.Item Моделювання природного освітлення виробничих приміщень на основі аналітичного методу розрахунку геометричного КПО(Видавництво Національного університету «Львівська політехніка», 2009) Кіт, А. Ю.; Кіт, Ю. В.; Комаров, В. І.Unlike the graphic method of Дanylyuk, the analytical method of calculation of coefficient of natural illumination which development of mathematical model and computer-aided design of natural illumination is possible on the basis of is offered.