MFC Sensors and Actuators in Active Vibration Control of the Circular Plate

Abstract

In this paper, the MFC sensor and actuators are applied to suppress circular plate vibrations. It is assumed that the system to be regulated is unknown. The mathematical model of the plate was obtained on the base of registration of a system response on a fixed excitation. For the estimation of the system's behaviour the ARX identification method was used to derive the linear model in the form of a transfer function of the order nine. The obtained model is then used to develop the linear feedback control algorithm for the cancellation of vibration by using the MFC star-shaped actuator (SIMO system). The MFC elements location is dealt with in this study with the use of a laser scanning vibrometer. The control schemes presented have the ability to compute the control effort and to apply it to the actuator within one sampling period. This control scheme is then illustrated through some numerical examples with simulations modelling the designed controller. The paper also describes the experimental results of the designed control system. Finally, the results obtained for the considered plate show that in the chosen frequency limit the designed structure of a closed-loop system with MFC elements provides a substantial vibration suppression.

Hysteresis modeling and feedforward compensation of a flexible structure actuated by macro fiber composites using bias bipolar Prandtl-Ishlinskii model

“…MFC shows excellent performances of thin laminate, large actuation force, and high reliability (Deraemaeker et al, 2009; Pandey and Arockiarajan, 2016; Shi and Jia, 2018) investigated a shear wave deicing method driven by MFC actuators, and implemented this technology on a flexible plate for aircraft wings. Leniowska and Mazan (2015) designed a novel star-shaped MFC actuator to suppress the vibration of a circular plate under multi-frequency disturbance. Erturk and Cen (2013) and Shahab and Erturk (2016) utilized MFC bimorphs as the prolusion device of a robotic fish, Lou et al (2020) proposed a MFC-actuated koi’s caudal fin-like propulsion device, and obtained its underwater oscillating performance.…”

Spectral Analysis of Macro-Fiber Composites Measured Vibration of Double-Panel Structure Coupled with Solenoids

“…In this study, Macro-Fiber Composite (MFC) patches are attached to the radiating panel of the double-panel structure to measure vibration of this panel. Piezocomposites, possible to use both as sensors and actuators, are known for their high-quality properties, such as low mass and high flexibility [ 39 ]. This is an important class of smart materials, which produce electrical charge if exposed to mechanical deformations [ 40 ].…”

Shear actuation mechanism and shear-based actuation capability of an obliquely reinforced piezoelectric fibre composite in active control of annular plates

“…Apart from the large-scale structures, the same structural elements are also utilized in small-scale devices like optical mirror, micropumps, microvalves, devices for generating/detecting sound, implantable medical devices, micro-switches and so on (Cao et al, 2001;Chee et al, 1998;Dong et al, 2002;Philen and Wang, 2001;Spencer et al, 1978). For active control of these small-scale devices or similar devices with the host structure of annular/circular plate, the piezoelectric actuators can be utilized as it is reported in the literature using the extension mode piezoelectric actuators (Chen et al, 2004;Dobrucki and Pruchnicki, 1997;Ebrahimi and Rastgoo, 2008;Fox et al, 2007;Kumar et al, 2015;Leniowska and Mazan, 2015;Li and Chen, 2003;Liu et al, 2008;Morris and Forster, 2000;Takano et al, 1990).…”