Open AccessGENERAL METHODS OF OPTIMIZA¬TION OF KINEMATIC AND DYNAMIC PARAMETERS OF THE MACHINE UNIT
Author(s) -
Олександр Дмитрович Романюк,
L. P. Telipko
Publication year - 2021
Publication title -
zbìrnik naukovih pracʹ dnìprodzeržinsʹkogo deržavnogo tehnìčnogo unìversitetu. tehnìčnì nauki/zbìrnik naukovih pracʹ dnìprovsʹkogo deržavnogo tehnìčnogo unìversitetu. tehnìčnì nauki
Language(s) - English
Resource type - Journals
eISSN - 2617-8389
pISSN - 2519-2884
DOI - 10.31319/2519-2884.37.2020.4
Subject(s) - flywheel , kinematics , control theory (sociology) , moment of inertia , inertia , torque , mechanism (biology) , computer science , rotary inertia , machine tool , swing , control engineering , engineering , mechanical engineering , physics , artificial intelligence , classical mechanics , control (management) , quantum mechanics , thermodynamics
In steady-state operation, the kinematic and dynamic characteristics of the machine unit are periodic functions, as there is a periodic change in the forces and the transfer function of the drive mechanism. Accordingly, the task of finding methods to optimize the characteristics of the machine unit is mainly to reduce the amplitude of oscillations of the speed of the link by increasing the total moment of inertia by installing a flywheel on the shaft of the link, which increases the weight of the mechanism and its inertia.
To eliminate the corresponding shortcomings of additional flywheels, it is necessary in the process of preliminary design of the drive of the executive body of the machine unit to select such a standard gearbox, the swing torque of which would correspond to the additional flywheel, which is difficult to implement. It is more expedient to design new transmission mechanisms, the moments of inertia of rotating masses which could perform the function of a flywheel. The corresponding design principle makes it possible to solve the problem in the first approximation, but sometimes with great difficulty, so it is necessary to pay attention to the machine unit as a whole, and not just the mechanical transmission.
Based on the basic mathematical model of the machine unit using the principle of mass and force reduction, three variants of dynamic models were obtained depending on the choice of the link of construction, in order to optimize the kinematic and force parameters of the machine unit.
As a result of the analysis of dynamic models it is concluded that the most optimal solution of problems of optimization of kinematic and dynamic parameters of the machine unit is the complex approach which consists in designing not the drive scheme and the machine unit as a whole. That is, using only a standard electric motor, and the executive body of the machine and the mechanical transmission to design as a whole. This approach will provide the optimal solution to almost any problem posed to engineers and designers by modern production.