As a suspension device based on the principle of electromagnetic induction, the maintenance of the suspension state of the magnetic floating ball depends on the dynamic balance of the field strength between the permanent magnet and the electromagnetic coil. The energy conversion efficiency of the core suspension module directly determines the continuous working time of the system. There is a cumulative effect of energy loss in the process of converting the electrical energy input into an alternating magnetic field through a closed-loop control circuit. The stability of the suspension height of the magnetic floating ball is subject to the feedback accuracy of the position sensor and the real-time response capability of the magnetic compensation algorithm. The increase in the system oscillation amplitude will accelerate the energy dissipation process.
The thermal stability of the material of the magnetic floating ball structure affects the long-term operating performance. The skin effect of the electromagnetic coil leads to Joule heat accumulation, and the temperature rise changes the residual magnetic properties of the permanent magnet. The dynamic balance accuracy of the rotor assembly is negatively correlated with the friction loss of the bearing system. The kinetic energy attenuation caused by air resistance is irreversible without an active energy replenishment mechanism. The environmental magnetic field disturbance interferes with the signal acquisition of the magnetic floating ball, forcing the control system to increase the adjustment frequency to maintain the suspension state.
The integrity of the magnetic shielding structure determines the degree of penetration of external electromagnetic interference and affects the energy consumption base required for the system to maintain suspension. The ripple factor of the current regulation module and the switching loss of the power device jointly restrict the overall energy efficiency ratio of the system. In terms of material fatigue, the stress relaxation characteristics of the elastic support change the natural frequency of the system over time, indirectly affecting the duration of suspension stability.
The ultimate constraint on the suspension time of the magnetic floating ball can be attributed to the sustainability of the energy supply method. The external power supply system has better continuous working potential than the built-in battery, but is subject to the guarantee of power supply continuity.
