Title :
Study of EDS & EMS Hybrid Suspension System With Permanent-Magnet Halbach Array
Author :
Long, Zhiqiang ; He, Guang ; Xue, Song
Author_Institution :
Eng. Res. Center of Maglev Technol., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
In this paper, a permanent magnet (PM) electro-dynamic suspension and electro-magnetic suspension (EDS & EMS) hybrid suspension system is proposed to overcome the shortcomings of the under-damped dynamics in a PM EDS system. The linearized model is established and its stability is also analyzed using the Routh criterion. According to the rational distribution between the repulsive force and the electromagnetic force, a controller is designed to meet the dynamic performance required in practical applications. A novel maglev system using a hybrid suspension scheme is also presented in this paper. Furthermore, a single-degree-of-freedom (SDOF) hybrid suspension experimental mechanism is established, and some experiments have also been undertaken to validate its effectiveness on suppressing the oscillation of the PM EDS system caused by external disturbances.
Keywords :
Routh methods; magnetic levitation; permanent magnets; EDS hybrid suspension system; EMS hybrid suspension system; Routh criterion; electrodynamic suspension; electromagnetic force; electromagnetic suspension; maglev system; permanent magnet Halbach array; repulsive force; single-degree-of-freedom hybrid suspension; underdamped dynamics; Electromagnetic forces; Magnetic forces; Magnetic levitation; Stability analysis; Suspensions; Active control; Halbach array; PM EDS & EMS suspension system; dynamic performance; experimental mechanism;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2159237
