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.
Highlights
In the natural environments, there is vibration everywhere
Active vibration control exerted by piezoelectric actuators (PEAs) initiated by signals from piezoelectric vibration sensors mounted on a test plate was investigated
adaptive network-based fuzzy inference system (ANFIS) was found to be clearly superior to the traditional Type-1 fuzzy controller for vibration reduction control
Summary
There is vibration everywhere. Natural as well as manmade vibration and noise can be detrimental to most precision manufacturing processes. Most high precision production lines have stringent controls and norms established for vibrations to avoid adverse impact on production. The reduction of the impact of vibration, both structural and from noise, can be achieved by three main methods: passive, active, and semi-active control. Control is achieved passively by the use of anti-vibration devices and mounts or by a material that has a damping effect or has shock absorbing properties. A range of smart materials has been developed These include piezoelectric, electrostriction, magnetic contraction materials, etc. These advances have led to serious improvements in vibration reduction, which has allowed active methods to become easier and more effective than passive means.
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