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1. 发明授权

US06318520B1 Magnetorheological fluid damper tunable for smooth transitions 有权
标题翻译：磁流变阻尼器适用于平滑过渡
公开(公告)号：US06318520B1
公开(公告)日：2001-11-20
申请号：US09772640
申请日：2001-01-30
申请人： Iiya Lisenker , Patrick N. Hopkins , Michael R. Lukuc
发明人： Iiya Lisenker , Patrick N. Hopkins , Michael R. Lukuc
IPC分类号： F16F953
CPC分类号： F16F9/3405 , B60G2204/112 , F16F9/3214 , F16F9/535
摘要： An improved magnetorheological fluid damper is provided which effectively provides a smooth transition, without a sharp break in the damper force/velocity curve, between very low damping forces near zero damper velocity to higher damping forces at higher piston velocities while maintaining desirable maximum force levels. The damper includes a piston assembly, including a magnet assembly and a flow gap extending through the piston assembly to permit fluid flow between the chambers. The force/velocity optimization feature includes a groove or passage open to the flow gap, positioned in series with a part of the flow gap in a magnetic circuit generated by the magnet assembly and dimensioned/sized to permit fluid flowing the passage to experience a magnetorheological effect less than a magnetorheological effect experienced by fluid flowing through the flow gap but not through the groove. Preferably, the passage is formed in an inner annular surface of a flux ring positioned around a piston core. The passage may be a single passage or multiple passages and may be formed, for example, by a curvilinear surface, a modified rectangular surface and/or a triangular surface or combinations of surfaces.
摘要翻译：提供了一种改进的磁流变流体阻尼器，其有效地提供了在阻尼器力/速度曲线下的非常低的阻尼力与零阻尼器速度的非常低的阻尼力之间的平滑过渡，而在更高的活塞速度下具有较高的阻尼力，同时保持期望的最大力水平。阻尼器包括活塞组件，其包括磁体组件和延伸穿过活塞组件的流动间隙，以允许流体在腔室之间流动。力/速度优化特征包括通向流动间隙的凹槽或通道，其与由磁体组件产生的磁路中的一部分流动间隙串联定位，并且尺寸设计成允许流体流动通道以经历磁流变学效果小于流体流过流动间隙而不通过凹槽所经历的磁流变效应。优选地，通道形成在位于活塞芯周围的磁通环的内环形表面中。通道可以是单个通道或多个通道，并且可以例如通过曲线表面，改进的矩形表面和/或三角形表面或表面的组合形成。

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