| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic suspension system with high practicality. SOLUTION: In vibration damping control for generating absorber force generated by an electromagnetic shock absorber as vibration damping force for damping at least vibrations at a spring upper part, when a vehicle travels at a place where road surface gradient changes, vibrations in frequency lower than a set frequency fc' are made to be excluded from damping objects. When the vehicle travels at a place where the road surface gradient changes, for example, a place changing from a slope to a flat road, a place changing from a flat road to a slope, etc., a force which produces pitch is applied on a vehicle body according to the change of the road surface gradient, and vibrations with comparatively large amplitude and comparatively low frequency are generated in the vehicle body. The suspension system of the present invention can prevent the generation of the absorber force to the vibrations and can mitigate a burden on the system. COPYRIGHT: (C)2009,JPO&INPIT
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