✍ Scribed by B.V. Jayawant; P.K. Sinha
No coin nor oath required. For personal study only.
The aim of this paper is to establish that attraction type systems, i.e. with controlled d.c. electromagnets, can be successfully employed for the suspension of urban transit vehicles, having speeds around 70km/hr, without the aid of secondary suspension. The feasibility of the d.c. suspension systems is illustrated through the ride and track-clearance characteristics for a single-degree of freedom suspension system travelling along a ferromagnetic guideway with random roughness. Performance of the suspension system with active feedback of track-clearance, vertical velocity and vertical acceleration ure discussed, and the analytical results are compared with expcrimental data obtained fl'om a vibrating guideway test rig.
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