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1.发明授权Method and apparatus for measurement and control of magnetic particle concentration in a magnetorheological fluid 有权用于测量和控制磁流变流体中磁性颗粒浓度的方法和装置公开(公告)号：US08896293B2
公开(公告)日：2014-11-25
申请号：US13085688
申请日：2011-04-13
摘要： A system for sensing and controlling concentration of magnetic particles in magnetorheological fluid comprising a wire coil and an AC voltage generator that, when energized, creates a magnetic flux field including a fringing field. When the fringing field extends through the magnetorheological fluid, the impedance in the circuit is proportional to the concentration of magnetic particles. A reference wire coil identical to the sensing wire coil is connected therewith. A demodulator is connected to each of the coils sends an impedance difference signal to a feedback controller connected to controllable dispensing apparatus for adding a calculated amount of replenishing fluid to the magnetorheological fluid. The system may be incorporated into an integrated fluid management module having apparatus for receiving and replenishing spent magnetorheological fluid and a sensor system in accordance with the present invention for use in a magnetorheological finishing system having a carrier wheel.
摘要翻译： 一种用于感测和控制磁流变流体中的磁性颗粒浓度的系统，包括线圈和AC电压发生器，当被通电时，产生包括边缘场的磁通场。 当边缘场延伸穿过磁流变流体时，电路中的阻抗与磁性颗粒的浓度成比例。 与传感线圈相同的参考线圈线圈与其连接。 连接到每个线圈的解调器将阻抗差信号发送到连接到可控分配装置的反馈控制器，用于将计算量的补充流体添加到磁流变流体。 该系统可以并入具有用于接收和补充用过的磁流变流体的装置的集成流体管理模块和根据本发明的用于具有承载轮的磁流变整理系统中的传感器系统。
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2.发明申请公开(公告)号：US20120164916A1
公开(公告)日：2012-06-28
申请号：US13085688
申请日：2011-04-13
摘要： A system for sensing and controlling concentration of magnetic particles in magnetorheological fluid comprising a wire coil and an AC voltage generator that, when energized, creates a magnetic flux field including a fringing field. When the fringing field extends through the magnetorheological fluid, the impedance in the circuit is proportional to the concentration of magnetic particles. A reference wire coil identical to the sensing wire coil is connected therewith. A demodulator is connected to each of the coils sends an impedance difference signal to a feedback controller connected to controllable dispensing apparatus for adding a calculated amount of replenishing fluid to the magnetorheological fluid. The system may be incorporated into an integrated fluid management module having apparatus for receiving and replenishing spent magnetorheological fluid and a sensor system in accordance with the present invention for use in a magnetorheological finishing system having a carrier wheel.
摘要翻译： 一种用于感测和控制磁流变流体中的磁性颗粒浓度的系统，包括线圈和AC电压发生器，当被通电时，产生包括边缘场的磁通场。 当边缘场延伸穿过磁流变流体时，电路中的阻抗与磁性颗粒的浓度成比例。 与传感线圈相同的参考线圈线圈与其连接。 连接到每个线圈的解调器将阻抗差信号发送到连接到可控分配装置的反馈控制器，用于将计算量的补充流体添加到磁流变流体。 该系统可以并入具有用于接收和补充用过的磁流变流体的装置的集成流体管理模块和根据本发明的用于具有承载轮的磁流变整理系统中的传感器系统。
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公开(公告)号：US20120164925A1
公开(公告)日：2012-06-28
申请号：US12977180
申请日：2010-12-23
CPC分类号： B24B31/112 , B24B1/005
摘要： A system for magnetorheological finishing of a substrate. An integrated fluid management module (IFMM) provides dynamic control of the rheological fluid properties of the MR fluid on a conventional MR finishing apparatus, and dispensing of the fluid to the wheel. A magnetically shielded chamber charged with MR fluid is in contact with the carrier wheel. A transverse line removes the spent MR fluid from the wheel as the ribbon leaves the work zone. Replenishment fluid is added to the chamber via a dripper, and preferably an electric mixer agitates MR fluid in the chamber. A grooved magnetically-shielded insert at the exit of the chamber forms a polishing ribbon on the carrier wheel as the wheel is turned. A sensor sensitive to concentration of magnetic particles provides a signal for control of MR fluid properties, particularly, water content in the MR fluid. Means is provided for cooling fluid within the chamber.
摘要翻译： 一种基板磁流变整理系统。 集成流体管理模块（IFMM）提供对常规MR整理装置上MR流体的流变流体特性的动态控制，以及将流体分配到车轮。 装有MR流体的磁屏蔽室与承载轮接触。 当条带离开工作区时，横向线从轮上移除废的MR流体。 补充液通过滴液器加入到腔室中，优选地，电动搅拌器搅拌腔室中的MR流体。 在腔室出口处的槽形磁屏蔽插入件在车轮转动时在载体轮上形成抛光带。 对磁性颗粒浓度敏感的传感器提供了用于控制MR流体性质，特别是MR流体中的含水量的信号。 提供了用于在室内冷却流体的装置。
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公开(公告)号：US08613640B2
公开(公告)日：2013-12-24
申请号：US12977180
申请日：2010-12-23
IPC分类号： B24B49/00
CPC分类号： B24B31/112 , B24B1/005
摘要： A system for magnetorheological finishing of a substrate. An integrated fluid management module (IFMM) provides dynamic control of the rheological fluid properties of the MR fluid on a conventional MR finishing apparatus, and dispensing of the fluid to the wheel. A magnetically shielded chamber charged with MR fluid is in contact with the carrier wheel. A transverse line removes the spent MR fluid from the wheel as the ribbon leaves the work zone. Replenishment fluid is added to the chamber via a dripper, and preferably an electric mixer agitates MR fluid in the chamber. A grooved magnetically-shielded insert at the exit of the chamber forms a polishing ribbon on the carrier wheel as the wheel is turned. A sensor sensitive to concentration of magnetic particles provides a signal for control of MR fluid properties, particularly, water content in the MR fluid. Means is provided for cooling fluid within the chamber.
摘要翻译： 一种基板磁流变整理系统。 集成流体管理模块（IFMM）提供对常规MR整理装置上MR流体的流变流体特性的动态控制，以及将流体分配到车轮。 装有MR流体的磁屏蔽室与承载轮接触。 当条带离开工作区时，横向线从轮上移除废的MR流体。 补充液通过滴液器加入到腔室中，优选地，电动搅拌器搅拌腔室中的MR流体。 在腔室出口处的槽形磁屏蔽插入件在车轮转动时在载体轮上形成抛光带。 对磁性颗粒浓度敏感的传感器提供了用于控制MR流体性质，特别是MR流体中的含水量的信号。 提供了用于在室内冷却流体的装置。
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5.发明授权Method and apparatus for forming a dynamic magnetic seal using magnetorheological fluid 有权使用磁流变流体形成动态磁性密封的方法和装置公开(公告)号：US07156724B2
公开(公告)日：2007-01-02
申请号：US11012645
申请日：2004-12-15
申请人： William Kordonski , Andy Price , Jerry Carapella , Arpad Sekeres
发明人： William Kordonski , Andy Price , Jerry Carapella , Arpad Sekeres
IPC分类号： B24B1/00
CPC分类号： F16J15/43
摘要： An arcuate, preferably cylindrical, magnetic shunt bar supports a plurality of pin magnets having alternate north and south orientations, defining a ring-shaped array of magnets of alternating orientation. The magnet free ends opposite the shunt bar are positioned to conform closely to the shape of a surface to be sealed, forming a narrow gap therebetween containing a multi-polar magnetic field extending beyond the free ends in a direction substantially orthogonal to the surface. The axes of the magnets may be disposed at any desired angular orientation to the surface. Magnetorheological fluid (MRF) in the gap is magnetically stiffened and held as a dynamic seal. The arrangement is useful as a shaft seal, wherein the seal surface passes axially through the array, and also as a wiper for MRF from a carrier surface wherein the surface passes by the array.
摘要翻译： 弧形，优选圆柱形的磁分路杆支撑具有交替的北和南取向的多个销磁体，限定交替定向的磁体的环形阵列。 与分流棒相对的磁体自由端被定位成紧密地与待密封的表面的形状紧密地形成，在它们之间形成狭窄的间隙，其间包含大致垂直于表面的方向延伸超过自由端的多极磁场。 磁体的轴可以以任何期望的角度方向设置到表面。 间隙中的磁流变流体（MRF）被磁力加强并保持为动态密封。 该装置作为轴密封是有用的，其中密封表面轴向地穿过阵列，并且还可以作为用于表面经过阵列的载体表面的MRF的擦拭器。
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公开(公告)号：US06267651B1
公开(公告)日：2001-07-31
申请号：US09480306
申请日：2000-01-10
IPC分类号： B24B4900
CPC分类号： B24B1/005 , B24B31/112 , B24B31/12 , H01F7/0252
摘要： A magnetic wiper for removing magnetorheological fluid from a carrier surface includes a horseshoe magnet having north and south polepieces elongated in a first direction orthogonal to a second direction of magnetic flux in the magnet. The polepieces are generally parallel at their free ends in the first direction and are preferably arcuate such that the inner polepiece forms a trough for receiving magnetorheological fluid removed from the carrier surface and conveying it to an exit tube. The free ends are shaped to conform closely to the shape of the carrier surface, forming a narrow gap therebetween containing a magnetic fringing field extending beyond the free ends. Magnetorheological fluid conveyed into the gap by the carrier surface is magnetically stiffened to a very stiff paste which is retained in the gap by the fringing field, forming a dynamic liquid seal such that additional magnetorheological fluid carried by the carrier surface is wiped away from the surface and into the trough formed by the inner polepiece. Thus, the magnet forms an effective remover of magnetorheological fluid from the carrier surface without any mechanical contact with the surface.
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7.发明申请公开(公告)号：US20100079137A1
公开(公告)日：2010-04-01
申请号：US12449655
申请日：2008-02-27
申请人： William Kordonski , Arpad Sekeres , Robert James
发明人： William Kordonski , Arpad Sekeres , Robert James
IPC分类号： G01N27/72
摘要： A system for determining magnetic permeability of a material. Two electrical inductors formed as primary and secondary concentric coils share a common magnetic core space. A first AC voltage applied to the primary coil creates a magnetic flux in the core proportional to the magnetic permeability of the material. The magnetic flux induces an AC voltage in the secondary coil indicative of the apparent magnetic permeability of the sample. The apparent permeability is corrected for conductivity by imposing a second AC voltage and resistor in series across first and second electrodes disposed in the material. When the material is a magnetorheological fluid, the magnetic permeability is proportional to the concentration of magnetic particles in the sample and can be back-calculated from the amplitude of the secondary voltage signal.
摘要翻译： 一种用于确定材料的磁导率的系统。 形成为主要和次级同心线圈的两个电感器共享共同的磁芯空间。 施加到初级线圈的第一AC电压在芯中产生与该材料的磁导率成比例的磁通量。 磁通量引起次级线圈中的交流电压，表示样品的表观磁导率。 通过在设置在材料中的第一和第二电极上串联施加第二交流电压和电阻器来校正电导率的表观磁导率。 当材料是磁流变流体时，磁导率与样品中磁性颗粒的浓度成比例，可以从次级电压信号的幅度反向计算。
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8.发明申请公开(公告)号：US20080214092A1
公开(公告)日：2008-09-04
申请号：US11681258
申请日：2007-03-02
申请人： William Kordonski , Arpad Sekeres , Robert James
发明人： William Kordonski , Arpad Sekeres , Robert James
摘要： A system for determining the magnetic permeability of a material is provided. Two electrical inductors formed as primary and secondary concentric coils share a common magnetic core space. An AC voltage applied to the primary coil creates a magnetic flux in the core proportional to the magnetic permeability of a sample of the material positioned within the core space. The magnetic flux induces an AC voltage in the secondary coil indicative of the sample magnetic permeability. When the material is a magnetorheological fluid, the magnetic permeability is proportional to the concentration of magnetic particles in the sample and can be back-calculated from the amplitude of the secondary voltage signal. Sensitivity and resolution can be increased by using two identical sets of coils wherein a reference material forms a core for the primary set and the MR fluid sample forms a core for the secondary set.
摘要翻译： 提供了用于确定材料的磁导率的系统。 形成为主要和次级同心线圈的两个电感器共享共同的磁芯空间。 施加到初级线圈的交流电压产生磁芯中的磁通量，该磁通量与定位在磁芯空间内的材料的样品的磁导率成比例。 磁通量在次级线圈中产生表示样品磁导率的AC电压。 当材料是磁流变流体时，磁导率与样品中磁性颗粒的浓度成比例，可以从次级电压信号的幅度反向计算。 可以通过使用两组相同的线圈来提高灵敏度和分辨率，其中参考材料形成用于初级组的芯，并且MR流体样品形成用于次级组的芯。
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9.发明申请Method and apparatus for forming a dynamic magnetic seal using magnetorheological fluid 有权使用磁流变流体形成动态磁性密封的方法和装置公开(公告)号：US20060125191A1
公开(公告)日：2006-06-15
申请号：US11012645
申请日：2004-12-15
申请人： William Kordonski , Andy Price , Jerry Carapella , Arpad Sekeres
发明人： William Kordonski , Andy Price , Jerry Carapella , Arpad Sekeres
IPC分类号： F16J15/43
CPC分类号： F16J15/43
摘要： An arcuate, preferably cylindrical, magnetic shunt bar supports a plurality of pin magnets having alternate north and south orientations, defining a ring-shaped array of magnets of alternating orientation. The magnet free ends opposite the shunt bar are positioned to conform closely to the shape of a surface to be sealed, forming a narrow gap therebetween containing a multi-polar magnetic field extending beyond the free ends in a direction substantially orthogonal to the surface. The axes of the magnets may be disposed at any desired angular orientation to the surface. Magnetorheological fluid (MRF) in the gap is magnetically stiffened and held as a dynamic seal. The arrangement is useful as a shaft seal, wherein the seal surface passes axially through the array, and also as a wiper for MRF from a carrier surface wherein the surface passes by the array.
摘要翻译： 弧形，优选圆柱形的磁分路杆支撑具有交替的北和南取向的多个销磁体，限定交替定向的磁体的环形阵列。 与分流棒相对的磁体自由端被定位成紧密地与待密封的表面的形状紧密地形成，在它们之间形成狭窄的间隙，其间包含大致垂直于表面的方向延伸超过自由端的多极磁场。 磁体的轴可以以任何期望的角度方向设置到表面。 间隙中的磁流变流体（MRF）被磁力加强并保持为动态密封。 该装置作为轴密封是有用的，其中密封表面轴向地穿过阵列，并且还可以作为用于表面经过阵列的载体表面的MRF的擦拭器。
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公开(公告)号：US06309285B1
公开(公告)日：2001-10-30
申请号：US09881476
申请日：2001-06-14
IPC分类号： B24B100
CPC分类号： B24B1/005 , B24B31/112 , B24B31/12 , H01F7/0252
摘要： A magnetic wiper for removing magnetorheological fluid from a carrier surface includes a horseshoe magnet having north and south polepieces elongated in a first direction orthogonal to a second direction of magnetic flux in the magnet. The polepieces are generally parallel at their free ends in the first direction and are preferably arcuate such that the inner polepiece forms a trough for receiving magnetorheological fluid removed from the carrier surface and conveying it to an exit tube. The free ends are shaped to conform closely to the shape of the carrier surface, forming a narrow gap therebetween containing a magnetic fringing field extending beyond the free ends. Magnetorheological fluid conveyed into the gap by the carrier surface is magnetically stiffened to a very stiff paste which is retained in the gap by the fringing field, forming a dynamic liquid seal such that additional magnetorheological fluid carried by the carrier surface is wiped away from the surface and into the trough formed by the inner polepiece. Thus, the magnet forms an effective remover of magnetorheological fluid from the carrier surface without any mechanical contact with the surface.
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