This paper proposes an innovative mechatronic piezo-actuated module to control vibrations\nin modern machine tools. Vibrations represent one of the main issues that seriously compromise\nthe quality of the workpiece. The active vibration control (AVC) device is composed of a host part\nintegrated with sensors and actuators synchronized by a regulator; it is able to make a self-assessment\nand adjust to alterations in the environment. In particular, an innovative smart actuator has been\ndesigned and developed to satisfy machining requirements during active vibration control. This study\npresents the mechatronic model based on the kinematic and dynamic analysis of the AVC device.\nTo ensure a real time performance, a H2-LQG controller has been developed and validated by\nsimulations involving a machine tool, PZT actuator and controller models. The Hardware in the\nLoop (HIL) architecture is adopted to control and attenuate the vibrations. A set of experimental tests\nhas been performed to validate the AVC module on a commercial machine tool. The feasibility of the\nreal time vibration damping is demonstrated and the simulation accuracy is evaluated.
Loading....