CONTROL SYSTEM THE ACTIVE ELEMENTS OF THE DECK THRESHING AND SEPARATING DEVICE FOR COBS OF THE SEED CORN
Introduction. Reducing the number of macro-and micro-damage of seed corn grain during threshing is a promising scientific and technical task, the solution of which will increase the yield of the crop and this is achieved by differentiating the value of threshing forces in the axial-rotor threshing-separating device. Purpose of research was to develop an automatic control system of the active elements of the deck of the threshing - separating device, which allows differentiating the value of the force of pressing the thorns to the ears of seed corn in different parts of the threshing chamber. Materials and methods. The study used the methods of system analysis, construction of algorithms for automated systems and development of circuit diagrams of control devices. Results and discussions. A promising design of threshing-separating device for seed corn, equipped with an active deck with a system of automatic control of the force of pressing independent of the district thorns deck to the grain, located in the cob, directly in the threshing process. Automation of the management process implemented on the management capabilities through the Atmega 2560 with the amount of pressure in the air cushions holding the thorns to the grain in the threshing process. The algorithm of the controller operation with pressure control units in sixteen deck airbags is proposed. Pressure control units consist of a membrane connected to a resistor of variable resistance, and two electro valves, one of which is designed to release pressure into the atmosphere, and the second - to supply air from the compressor to increase the pressure in the airbags. The operator by programming the controller, changing the pressure in the airbags, adjusts the force of pressing the thorns of the deck to the ears of corn address, that is, for any airbags, in any part of the deck. Summary. The proposed design of the threshing device with a system of automated pressure control in the deck airbags allows to differentiate the threshing forces, which minimizes the amount of macro - and micro-damage to the grain of seed corn and thereby retains the potential yield of this crop.