Active multimode vibration control of a smart structure using macro fiber composite actuators based on ANFIS

Abstract

In this study, vibration control was achieved using macro fiber composite actuators initiated by feedback from polyvinylidene difluoride (PVDF) membrane sensors. First, the structure mode was found using the finite element method after which simulation of the effect of piezoelectric actuators on the structure as well as a feasibility investigation was carried out. The ANSYS Workbench was used for parametric design and to determine the best position for the actuators. Structure vibration in different modes was measured using PVDF membrane sensors for feedback control and to investigate the vibration reduction effect achieved with three individual controllers. The pros and cons of active vibration reduction control were also examined in several different modes. The experimental results obtained with several types of vibration reduction control were compared: Type-1 fuzzy control, Type-1 adaptive fuzzy control, and the vibration reduction effect of an adaptive neuro-fuzzy inference system. The results showed that the adaptive neuro-fuzzy inference system controller was the best choice under the experimental conditions used in this study.

Active control strategy for low frequency vibration of space flexible cables based on improved sliding mode controller

“…9 Wave control refers to applying transverse force directly to the flexible cable to suppress the propagation of vibration waves, but this method will derive damage to the control part. 10 Therefore, scholars pay more attention to the study of modal control. Modal control that takes the displacement of a certain observation point of the flexible cable as the feedback suppresses the low frequency vibration of the cable through the output force of the axial actuator.…”