Title: Impedance optimisation of a planar piezo-actuation stage for supports of rotating machines

Authors: Luca Pugi

Addresses: Università degli Studi di Firenze, Florence, Italy

Abstract: Actuator impedance play a key role in advanced vibration control applications. In this work author propose an innovative layout for a piezo-actuation stage devoted to the force/position controls of the supports of rotating machines. Proposed solution is designed in order to obtain an isotropic behaviour and a frequency response which is optimised respect to dynamical behaviour of controlled machine taking count of performance constraints of chosen piezo-actuators. Authors also introduce an innovative design procedure to proceed to a proper sizing of the proposed solution with limited costs in terms of needed computational resources. Proposed actuation layout and corresponding design procedure have been applied successfully applied to a benchmark test case in order to demonstrate their feasibility, reliability and potential advantages.

Keywords: mechatronics; mechanical impedance shaping; rotating machines; piezo-electric actuators; vibration control.

DOI: 10.1504/IJMA.2020.108798

International Journal of Mechatronics and Automation, 2020 Vol.7 No.2, pp.81 - 93

Received: 11 Apr 2019
Accepted: 11 Feb 2020
Published online: 03 Aug 2020 *

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