Active Parametric Vibration Control of Dynamic Systems

Abstract

Parametricexcitationcanusuallybeseeninthelargemechanicalstructurecausingunwanted resonances when the static parameters of the system change usually by vibrations. In this work, we discuss the non-linear properties like stability and damping effect of the periodic change of the system’s stiffness. Parametric excitation is added into the system by using negative position feedback with parametric gain change. Test rig of a cantilever beam with piezoelectric actuator and sensor is used, the identification and then simulation is made the same as practical measurements. Fixed end of cantilever bean is kinematically excited while combination parametric resonance is used for active vibration damping.