Результаты экспериментальных исследований применения бесколлекторного электродвигателя для высевающих аппаратов пропашных сеялок типа МС

Abstract

This paper presents the data of comparative studies of the characteristics of the Mxus XF15R brushless elec-tric motor (rotation speed; consumed current, power and efficiency) depending on the maximum torque. The de-sign of the stand for studying the characteristics of the seeding process when using an electric drive of the seed-ing disc is presented; the key elements of the stand are: the seeding section, seeding disc, electric motor connect-ed to the seeding disc, the control unit, the source of rare-fied pressure, the seeding disc speed sensor and the seeding sensor. The technique of working with the stand and the procedure for setting it up are described. During the operation, the following indicators are taken into ac-count: control signal of the seeding disc drive; seeding disc and rotor revolutions, rpm; the number of the seed in the total volume from the moment of measurement; time between seeds falling, ms; vacuum, kPa; hole diameter, mm; reference time between the fall of adjacent seeds at a given rotational speed of the seeding disc, ms. During the experiment, it was found that with a value in the seed-ing chamber of 5 kPa, in the frequency range of the seed-ing disc from 17-100 rpm, the actual seeding rate was 3.28 pcs m, the number of twins in the seeding process was 8.17%, the number of gaps in the sowing process was 5.46%, and the deviation from the set rate was 5.2%. Thus, the electric drive of the seeding disc based on the brushless DC motor XF15R Mxus has shown its efficiency and may be used in the existing configuration of the MC type sowing device.