Where 𝑥 1 is the displacement of the brass plate, 𝑥 2 is the displacement of the working unit, 𝑚 1 is the equivalent mass of the brass plate and the housing, 𝑚 2 is the equivalent mass of the working unit, 𝐾 1 is the equivalent stiffness of the brass plate, 𝐶 1 is the equivalent damping of the brass plate, 𝐶 2 is the equivalent damping of the MFSA, and 𝐹 𝑚 is the restoring force. The main task is to calculate the most crucial performance parameter of the MFSA, namely 𝐶 2 .