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公开(公告)号：USRE42903E1
公开(公告)日：2011-11-08
申请号：US11490508
申请日：2006-07-20
IPC分类号： A61F2/48
CPC分类号： F16F9/535 , A61F2/5046 , A61F2/64 , A61F2/68 , A61F2/70 , A61F2/80 , A61F2002/5003 , A61F2002/5004 , A61F2002/5016 , A61F2002/5043 , A61F2002/607 , A61F2002/6614 , A61F2002/6863 , A61F2002/704 , A61F2002/74 , A61F2210/009 , A61F2250/0034
摘要： The present invention relates to a variable-torque magnetorheologically actuated prosthetic knee which utilizes a plurality of interspersed and alternating rotors and stators to shear magnetorheological fluid in gaps formed therebetween. Advantageously, by operating in the “shear mode” there is substantially no or negligible fluid pressure buildup or change. Moreover, the multiple MR fluid gaps or flux interfaces desirably allow for the production of a large torque at low speed—eliminating the need for a transmission—and also for a wide dynamic torque range. One embodiment of the invention allows the rotors and/or stators to close the gaps therebetween to create a frictional torque component, thereby forming a “hybrid” braking system which provides a total torque or damping which is a combination of viscous torque and frictional torque.
摘要翻译： 本发明涉及一种可变扭矩磁流变动力学假肢膝盖，其利用多个散布的和交替的转子和定子来剪切在其间形成的间隙中的磁流变流体。 有利地，通过在“剪切模式”中操作，基本上没有或可忽略的流体压力积聚或改变。 此外，多个MR流体间隙或磁通界面期望地允许以低速产生大的扭矩 - 消除了对变速器的需要以及宽动态扭矩范围。 本发明的一个实施例允许转子和/或定子闭合它们之间的间隙以产生摩擦转矩分量，由此形成“混合”制动系统，其提供作为粘性转矩和摩擦转矩的组合的总扭矩或阻尼。
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公开(公告)号：US06764520B2
公开(公告)日：2004-07-20
申请号：US09767367
申请日：2001-01-22
IPC分类号： A61F248
CPC分类号： F16F9/535 , A61F2/5046 , A61F2/64 , A61F2/68 , A61F2/70 , A61F2/80 , A61F2002/5003 , A61F2002/5004 , A61F2002/5016 , A61F2002/5043 , A61F2002/607 , A61F2002/6614 , A61F2002/6863 , A61F2002/704 , A61F2002/74 , A61F2210/009 , A61F2250/0034
摘要： The present invention relates to a variable-torque magnetorheologically actuated prosthetic knee which utilizes a plurality of interspersed and alternating rotors and stators to shear magnetorheological fluid in gaps formed therebetween. Advantageously, by operating in the “shear mode” there is substantially no or negligible fluid pressure buildup or change. Moreover, the multiple MR fluid gaps or flux interfaces desirably allow for the production of a large torque at low speed—eliminating the need for a transmission—and also for a wide dynamic torque range. One embodiment of the invention allows the rotors and/or stators to close the gaps therebetween to create a frictional torque component, thereby forming a “hybrid” braking system which provides a total torque or damping which is a combination of viscous torque and frictional torque.
摘要翻译： 本发明涉及一种可变扭矩磁流变动力学假肢膝盖，其利用多个散布的和交替的转子和定子来剪切在其间形成的间隙中的磁流变流体。 有利地，通过在“剪切模式”中操作，基本上没有或可忽略的流体压力积聚或改变。 此外，多个MR流体间隙或磁通界面期望地允许以低速产生大的扭矩 - 消除了对变速器的需要以及宽动态扭矩范围。 本发明的一个实施例允许转子和/或定子闭合它们之间的间隙以产生摩擦转矩分量，由此形成“混合”制动系统，其提供作为粘性转矩和摩擦转矩的组合的总扭矩或阻尼。
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