FIELD: agriculture.
SUBSTANCE: group of inventions relates to harvest grain crops. Combine harvester comprises separating device and cleaning device. Cleaning device includes screen and fan. Screen is made with controlled size of cells and can be oscillated. Fan supplies air flow on screen for loosening of picked mass. Method of controlling process of separation is measuring actual curves separation of disposed mass over width of cleaning device. Estimating measured actual curves of separation. Recognising available in direction of transportation loosening phases. One performs optimising loosening event.
EFFECT: better adjustment of the cleaning process is enabled.
14 cl, 6 dwg
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