an outline design of a magnetically suspended, 30 passenger vehicle for urban transport is presented. lift and guidance are provided by eight controlled dc electromagnets and propulsion is by a double-sided linear induction motor. the basic principles of the suspension are considered and a comparison is made between alternative suspension methods. a case for the adoption of magnetic suspension is presented. the design of the vehicle and track is dealt with at length. the magnet design and static characteristics are considered. control laws are investigated for a small-signal, linearized dynamic analysis. a similar, but separate, control is provided for each magnet. the linear motor is sized according to anticipated demands. ac and dc power supplies are contrasted and details of track and system control considered. system costs were calculated on the basis of figures for the birmingham rapid transit study as if the magnetic suspension system was also a contender together with the four other systems studied. the complete magnetic suspension system is shown to be less costly than any of the other systems. (a)

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