A Dynamic Model for Six-Degree-of-Freedom Bearingless Linear Motor Systems

This article develops a dynamic model for six-degree-of-freedom bearingless linear motor systems by means of lumped-element modeling. A four-sided system, containing eight three-phase units fed their own inverters, is considered as an example but the modeling approach can be applied to other well. The mechanical subsystem comprises rigid-body dynamics. electromagnetic governs electrical dynamics and production resultant force its associated torque. In order unbalanced magnetic torque due tilting mover, are spatially discretized into number identical submotor models having uniform air gap. each unit electrically connected in series, i.e., they share same current, flux linkages forces differ tilted positions. parameterized based on simple static two-dimensional finite-element method computations at range air-gap current values. developed validated through comparison between time-domain simulation results experimental results. simulations, real-time control system development, various analyses system.