WEB COMPLEX BASED ON MATHEMATICAL MODEL TO FORM OPTIMAL MACHINE-AND-TRACTOR FLEET

Abstract

There is given a mathematical model developed to form the optimal structure of machine-and-tractor fleet in an agricultural enterprise taking into account limitations in the number of machines and machine operators. There was developed a web complex PIKAT based on the mathematical model and intended for decision-making and on-line control of an agricultural enterprise. The structural arrangement of the web complex is given. This complex implements the following functions: calculates economic showings according to process charts with different initial data; checks the dates of process charts and availability of machine operators having appropriate qualification; evaluates the usable machinery to perform the predetermined tasks; chooses the optimal structure of machine-and-tractor fleet with the limitations of work fulfillment dates; compares the decision variants; responds on-line to changes in the enterprise’s activity conditions. There was created a database containing information on agricultural crops, tariff rates of machine operators, taxes and additional payments, fuel and lubricant prices, electrical energy cost, tractors, combines, agricultural machinery and units, machine operators, process charts, process operations, fertilizers and plant protection means. The approbation of the web complex was carried out at the farm “Elitnoe”, Novosibirsk Region. There were calculated the variants of the optimal structure of machine-and-tractor fleet as to direct costs and the number of machine operators. It is concluded that the web complex PIKAT makes it possible to carry out the necessary calculations in accordance with the demands.