回転型ダンパを組み込んだ空気ばねの防振特性(機械力学,計測,自動制御)

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For the characteristics of an anti-vibration apparatus, the static stiffness must be high enough to support the loaded body's mass, and the dynamic stiffness should be as low as possible to curb vibration transmission. For vibration around the resonant frequency, sufficient damping is especially needed to swiftly suppress the motion. An air suspension system is an excellent anti-vibration device. Various types of air spring are readily available in the market, and the characteristics have a particular feature: high static loading capacity and relatively low dynamic stiffness. The remaining issue is low damping and how to increase it. This paper proposes a new air suspension mound that basically consists of two subsystems linked in parallel. The first sybsystem is an air spring itself that supports the pay load. The second subsystem is comprised of a rubber block, a ball screw, and an inertia disc connected in a series to attain low dynamic stiffness or high damping performance. The dynamic stiffness of the proposed mount plunges at certain frequency and rebounds sharply, approaching constant value as frequency increases. The loss stiffness indicates sharp peak at little bit higher frequency than that of dynamic stiffness. It has been proved theoretically that the phenomena are caused by the resonance of the inertia disc. In comparisons of theoretical calculations with actual measurements, the theory fairy agrees with the measured values.
社団法人日本機械学会の論文
2009-12-25

回転型ダンパを組み込んだ空気ばねの防振特性(機械力学,計測,自動制御)

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