Samorodov B. Mathematical modelling and parametrical synthesis of the stepless transmissions of wheel tractors

Research object: process of determination of optimal constructive parameters of hydrovolumetric-mechanical transmissions. Research purpose: development of complex of mathematical models of the difficult technical systems of a type engine - hydrovolumetric-mechanical transmission - tractor with equipment. Research methods: classic matrix analysis, methods of the nonlinear programming (methods of optimizations of direct search); methods of mathematical analysis and theoretical mechanics; object-oriented programming. Practical value: complex approach is developed to optimization of constructive parameters of the stepless transmissions; system technology of construction of the full matrix (nonlinear because of losses) systems of the stepless transmissions is worked; the class of optimization methods is selected, which can be effectively used in the process of parametrical synthesis of the stepless transmissions; information technology of ESS is improved. Scientific novelty: decreed and solved actual problem of development of complex of mathematical models of the difficult technical systems of a type engine - transmission - tractor with equipment. Introduction: PC of "KHTP the name of S.Ordgonikidze" (Kharkiv), educational process of department of CAMS NTU "KHPI" (Kharkiv). Are of the use: at research, planning and exploitation of objects of new technique in industry of agricultural engineer.