Analysis of Magnetic Force Characteristics for a Zero-Power Hybrid Maglev Actuator with Variable Permanent Magnetic Offset Mechanism

This paper presents the design and magnetic field analysis of a novel hybrid zero-power magnetic levitation system capable of a constant air gap under varying loads. Finite element simulations confirm that the linear superposition of sinusoidal permanent magnet flux and current-dependent electromagnetic flux enables active control of magnetic force while maintaining a constant gap. The simulation results validate the feasibility of constant-gap, zero-power levitation and demonstrate the systems capability to support ferromagnetic objects of different masses through coordinated control of the permanent magnet angle and coil current.