Abstract
In the piezoelectric shunt damping technique, active shunt circuits play an essential role for realizing an advanced sensor-less piezoelectric vibration control system. This paper discusses the stability margin of the piezoelectric shunt damping system using the virtual admittance also known as the synthetic admittance. From the analysis of the stability-margin of the open-loop transfer function, it is shown that the virtual admittance is suitable for simulating the inductive shunt such as a series LR circuit.
