Effects of Load on the Electrodynamic Suspension System of the Ultra-high Speed Rocket Sled with Halbach Array

Electrodynamic suspension (EDS) system based on moving Halbach Array over a conducting plate has been verified to be poor in stability, but it is not clear whether the load could impact on it. This paper focuses on the effect of the load on the stability of the EDS system based on the Halbach array moving over a plate. Generalized energy was introduced by quantifying the Hamiltonian function. By Padé approximation, formulas to obtain both the amplitude and frequency were given. Load varied from 50kg to 64kg, keeping the generalized energy fixed to study the stability. Results show that the stability of electrodynamic suspension system could be improved by lager load, yet the oscillation frequency drifts.