Implementation of Low-Sensitivity Adaptive Control Systems in Machining Low-Stiffness Axisymmetric Workpieces

Abstract

Abstract This work analyses and proposes an application of adaptive control systems exhibiting low-sensitivity to changes in the technological system parameters in machining low-stiffness axisymmetric workpieces. Secondly, the frequency ranges at which the adaptive control system shows high sensitivity to changing machining allowance were determined. Finally, the developed method enables increasing the control accuracy of dynamic system parameters under changing feed rate and adjusting the elastic-strain parameters of the low-stiffness workpiece by means of the introduction of an error correction block in the form of negative feedback relative to the cutting force. The paper presents the method for constructing adaptive control systems that exhibit low sensitivity to modification of turning or grinding parameters.