Abstract
This paper considers requirements for main motion drives. A mathematical description of a dualmass system interconnected through an elastic replacement belt is provided. A study was made of the influence of elasticity on the dynamics and accuracy of maintaining the speed of the main motion drive of a machine. When modeling a control system for the main motion drive of a lathe machine, taking the elastic connection of the belt without a correction factor into consideration, an error associated with the speed in the steady state under a change in the resistance moment arises. The resistance moment depends on the radius, the workpiece material, and the settings of the longitudinal and transverse drives, such as depth of cut and feed rate. The control system for the main motion drive of a lathe, developed in the MatLab and Simulink environment, taking the belt elasticity with a correction factor into account, ensures high static characteristics of the drive.
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