Active Vibration Control of Smart Structure Using PZT Patches

The assembly that serves an engineering function is called as structure and structure that exhibits intelligence, efficiency, adaptability, accurate response and optimum performance is termed as a smart structure. Though, due to these advantages smart structures are used in many high end applications like aerospace engineering, microelectronics productions, precise positioning and automation industries, active vibration control of these structures is extremely important. This is because; mechanical vibrations in the structure can have detrimental effects as they can damage sensitive components of the structure or even the whole structure. Vibration control basically suppresses the effect of external disturbances and keeps the structure in its equilibrium position. In this paper, vibration control analysis of the structure for forced vibrations is carried out. The smart structure considered here, is a finite and flat beam-like fiber cantilever structure with PZT patches attached to its surface. Along with vibration control analysis effect of changing positions of PZT patches on this analysis is also discussed in this paper.