DOI: https://doi.org/10.20998/2078-7405.2020.93.05

MATHEMATICAL MODELING OF TRANSMISSION START WITH AN ASYNCHRONOUS ELECTRIC MOTOR

Victor Kurgan, Ihor Sydorenko, Volodymyr Litvinov, Vladyslav Vaysman, Kateryna Kirkopulo, Volodymyr Kulik

Abstract


The most difficult moment in the work with an asynchronous motor is the launch. And the more powerful drive is the more difficult launch. This is due to certain features of the asynchronous motors: a limited starting torque and starting throws of the current of the stator motor chain. The mathematical modeling of oscillating process of actuation of the actuator with an asynchronous motor, which includes an elastic coupling with nonlinear mechanical feedback, is carried out. The influence of the type of elastic characteristics of the coupling on the magnitude of the amplitude and frequency of the oscillation process and its time was studied. A single-mass rotational system model was used for the studies. According to the Runge-Kutta method, the oscillation processes of starting the transmission of a machine unit with an induction motor were investigated. To determine the coefficient of vibration isolation, a system with an elastic coupling having a linear elastic characteristic was calculated. A study was also conducted in the case where the coupling determines the elastic characteristics of the Duffing type "soft" and "hard" type.

Keywords


elastic coupling; mechanical feedback; elastic characteristic; oscillation process; rotational mass; starting torque.

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