Since the maximum vibration occurs at the end of the spacecraft's flexible solar panel, the MFSA is installed at the end. Therefore, the corresponding experimental system can be simplified as the model shown in Fig. . Because of small amplitude and low frequency vibration, the oscillation system abstracted by the experimental system can be further simplified into the free vibration system of a two-degree-of-freedom as shown in Fig. . When external vibration occurs, the working unit moves from the initial position and is subjected to the restoring force by the inclination. Moreover, the stable suspended support force exerts on the magnet to retain it suspended in the MF. The back and forth movement of the working unit causes the flow of the MF, which dissipates the energy of the oscillation system. In order to simplify the motion equation of the oscillation system, the following assumptions are necessary.