Bondar S. Simulation of machine complexes for basic tillage in the crop rotation

The dissertation is for getting an academic degree of the PhD in Engineering, in specialization 05.05.11 – machines and facilities for mechanization of Agricultural Industry. National Agricultural University of Ukraine, Kiev, 2005. The dissertation is dedicated to consideration of the right choice of efficient machine aggregates and complexes for the basic tillage. In the basis of system approach methodology with using of sets co-operation theory, the methodology of determination of efficient structure and effective using of machine complexes for basic tillage in the system of farm’s crops rotation was developed in the dissertation. The mathematical models of crops and their predecessors structorization, determination of farm lands structure were developed as a basis for argumentation of machine complexes for the basic tillage in the system of crops rotation. The concept of crops and predecessors correspondence (binary relations) is the basis for the mathematical model. Technology, number of technological operations, machine aggregates for the basic tillage is reflections of such correspondence. Subjecting to production capacity and crops structure, with using of the estimation system of crops and their predecessors correspondence which was developed on the basis of practical-training experiences of agricultural crops growing, the system of crops rotation and the structure of farm sown areas can be modeled. On grounds this, we can make a choice of machine aggregates, fleet of motor vehicles (according to considered criterions of effect from number of available or planned). The mathematic model of determination of productivity of machine aggregates was elaborated and gradation of amendments coefficient for determination of conditions complexity in using of machine aggregates for basic tillage was developed. The main objective of developed methodology is the most complete calculation of natural-productive, household-economical factors, which influence on effective of using of machine complexes for basic tillage in conditions of specific farm. The packet of applied software products for personnel computers was improved based on developed mathematical model. The system was called “Complex using of machinery” and it allows estimating exactly the affectivity of concrete machine aggregates and machine complexes as well as the system of basic tillage in crop rotation. Utilization and technical-economic indexes of machine aggregates for the basic tillage was researched. Technologies, schemes of machine using, machine complexes in accordance to their production pressure were researched, optimal areas for basic tillage were determined. Machine complexes for the basic tillage in the system of crop rotation were considered, also their technical and economic indexes, machines utilization norms were determined, prognosis estimation of productivity of developed methodological basic providing. Key words: the system of crop rotation, technology, basic tillage, machine aggregate, machine complex, basing method.