Experimental fuzzy logic active vibration control

Abstract

This paper presents analytical and experimental investigations on the elastodynamic control of a four-bar mechanism system with a flexible coupler link retrofitted with a collocated piezo electric sensor actuator pair using P-like fuzzy logic control (FLC). A major advantage of FLC is that the controller can be designed without having a model of the system. The four-bar mechanism will be operated close to its fundamental natural frequency, considered to be the major contributor to the system response. Damping the low frequency vibrations is essential to realize light weight flexible mechanisms for viable industrial applications. The viability of the controller design is assessed by comparing the experimental results with those obtained by simulation.