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.
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 *