Abstract
The article considers a reciprocating-rotational electric drive based on a linear asynchronous electric motor, which simplifies the design of the drive mechanism of the separating machine and reduces operating costs. When simplifying the design of the drive mechanism (abandoning the use of a crank mechanism), the rigid kinematic connection between the working body and the electric motor is replaced by an elastic connection between them. Thus, there is a dependence of the kinematic parameters of the working body on its inertial forces. The oscillation frequency of the working body along the axis of its rotation is set by the fre- quency of its rotation, and the linear asynchronous electric motor is constantly connected to the power source. Accordingly, if the working body reaches the extreme point when it moves along the axis of rotation, and the traction force of the electric motor acts on it at this moment (the working surface of the electric motor inductor has not reached the technical hole on the secondary element), then the inductor of the linear asynchronous electric motor will overheat. To solve this problem, the article suggests using a developed control system that allows for required oscillation of the working body along its axis of rotation by regulating the voltage at the input of the electric motor. The results of experimental studies have shown that the use of the proposed electric motor control system allows reducing the heating temperature of the electric motor inductor by 24 °C
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