Title: Comparison of model free control strategies for chatter suppression by an inertial actuator

Authors: Iker Mancisidor; Alexander Pena-Sevillano; Rafael Barcena; Oier Franco; Jokin Munoa; Luis Norberto López De Lacalle

Addresses: Dynamics and Control, IK4-Ideko, Arriaga Industrialdea 2, 20870, Elgoibar, Gipuzkoa, Spain ' Dynamics and Control, IK4-Ideko, Arriaga Industrialdea 2, 20870, Elgoibar, Gipuzkoa, Spain ' Department of Electronic Technology, University of the Basque Country, UPV-EHU, 3 Rafael Moreno, 48013, Bilbao, Bizkaia, Spain ' Dynamics and Control, IK4-Ideko, Arriaga Industrialdea 2, 20870, Elgoibar, Gipuzkoa, Spain; Precision Controls Laboratory, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L3G1, Canada ' Dynamics and Control, IK4-Ideko, Arriaga Industrialdea 2, 20870, Elgoibar, Gipuzkoa, Spain; Department of Mechanical Engineering, Faculty of Engineering of Bilbao, Aeronautics Advanced Manufacturing Center (CFAA), Alameda de Urquijo s/n, 48013, Bilbao, Bizkaia, Spain ' Department of Mechanical Engineering, Faculty of Engineering of Bilbao, Aeronautics Advanced Manufacturing Center (CFAA), Alameda de Urquijo s/n, 48013, Bilbao, Bizkaia, Spain

Abstract: The employment of inertial active damping devices for chatter suppression in machining processes has been widely studied. The main drawback is that machine tools generally offer reduced spaces for the actuator location close to the cutting point and, hence, a reduced volume design is required for this external device. Consequently, the ratio between the force capability and the occupied volume is of major importance. Therefore, the performance of the actuator must be exploited to the fullest, which depends principally on the selected control strategy to determine the force to be exerted. The work presents the comparison of the most used feedback control algorithms and a novel strategy based on the regenerative effect disturbance. Their results are assessed for orthogonal cutting cases, with the aim of optimising the behaviour of the active damping system.

Keywords: active damping; inertial actuator; chatter.

DOI: 10.1504/IJMMS.2019.103477

International Journal of Mechatronics and Manufacturing Systems, 2019 Vol.12 No.3/4, pp.164 - 179

Received: 04 Apr 2019
Accepted: 01 Jun 2019
Published online: 06 Nov 2019 *

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