Active vibration suppression of elastic blade structure: Using a novel magnetorheological layer patch

Abstract

This research study proposes a new active control structure to suppress vibrations of a small-scale wind turbine blade with attached magnetorheological fluid patch actuated by an electromagnet. The blade structure is manufactured by an aluminum extrusion machine considering the airfoil data of SH3055 which is designed for use on a small wind turbine. An interaction model between the magnetorheological patch and the electromagnetic actuator is derived and a force characterization is realized. A norm-based multiobjective H2/H∞ controller is designed using the state-space model of the elastic blade element. The H2/H∞ controller is experimentally implemented under the steady-state aerodynamic load conditions. The results of experiments show that the magnetorheological layer patch is effective for suppressing vibrations of the blade structure and robust against parametric uncertainty.

Active vibration control of a blade element with uncertainty modeling in PZT actuator force

“…The blade structure natural frequencies are obtained experimentally and analytically by using different approaches (Bolat and Sivrioglu, 2018). To compare the results the frequency values are given in Table 1.…”

Switching linear quadratic Gaussian control of a flexible blade structure containing magnetorheological fluid

“…Various research works have attempted to understand the dynamics and behavior of structures containing MR fluid under a magnetic field. Concerning with the sandwich beams containing MR fluid Yalcintas et al (1995), Yalcintas and Dai (1999, 2003), and Bolat and Sivrioglu (2018) presented significant research outcomes. These studies have examined many aspects of sandwich beams under different magnetic fields such as suppression of vibration, natural frequency change, damping value and loss factor change.…”

Investigation of dynamic properties of a three-dimensional printed thermoplastic composite beam containing controllable core under non-uniform magnetic fields

“…The dynamic analysis of a laminated sandwich panel with a 3D printed honeycomb core filled with MRE was investigated by de Souza Eloy et al 12 They concluded that when the magnetic field on the free end of the sandwich panel increased, the vibration amplitude decreased and the natural frequencies shifted downwards. Bolat and Sivrioglu 13 developed an active small scale aluminum alloy blade structure with MR fluid patch. Their findings showed that structural vibration is greatly suppressed by the applied magnetic field strength.…”