CNC Machine Adaptive Control Mechatronic Module

Abstract

AbstractA new scientific and technical direction has been formulated in the field of the development of hierarchical adaptive and intelligent control of machine tools based on the use of a mechatronic module embedded in directly motor-spindle unit of a CNC metal cutting machine. The design of a mechatronic module (based on linear actuator idea) is proposed, which contains all the necessary elements for two design variants of this module. In the first variant, it is a mechatronic transducer for generating a control signal about the imbalance of forces (between the reference and actual forces). In the second variant, it is a mechatronic power converter to eliminate the specified imbalance of forces with force-and-torque stabilization or tracking control according to a changing program. In the first variant (transducer), the generated control signal enters the input of a closed automatic control system “by deviation” (for example, into the CNC system of a metal-cutting machine). In the second variant (power converter), the mechatronic module performs the function of direct automatic regulation “by disturbance” during information interaction with the CNC system. The proposed and tested in practice mechatronic module design is based on a new paradigm of creating power-setting devices for software (program) hierarchical control of force-and-torque parameters, in contrast to the traditional paradigm of creating devices for software (program) control of kinematic parameters (displacement and speed) of machining processes on CNC machines, both positional and contour ones. KeywordsCNC machineMechatronic transducerUnbalance signalAdaptive controlIntelligent controlHierarchical controlCutting torqueAxial forceElectrodynamic forceAnisotropic properties