Research on the Identification Modeling of Air-Magnet Active Vibration Isolation System

Abstract

Abstract. The methods of the identification modeling of air-magnet active vibration isolation system (AMAVIS) are studied. Difference equation model and transfer function model are established respectively in the time domain and frequency domain. The models are analyzed and proved by the experiment. Identification results show that the order of frequency identification is higher than the time identification model. But when it comes to accuracy and convergence, frequency identification model has obvious advantage. This paper provides evidence for subsequent active vibration control. The conclusion is the basic of subsequent experiment and research.

Optimization of the Stabilization System for Electromagnetic Suspension in Active Vibration Isolation Devices

“…, where R is the resistance of the EMS electromagnet winding; L 0 is the EMS inductance corresponding to the equilibrium point of the suspended body; m is the mass of the vibration-isolated object; a is a linearization coefficient of the electromagnet traction, which depends on the electromagnet current and relative displacement of the object raised to the power (-2); b is a linearization coefficient of the electromagnet traction, depending on the electromagnet current and relative displacement of the object raised to the power (-3) [16][17][18].…”