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1. 发明授权

US06690160B2 Position sensing apparatus 有权
标题翻译：位置检测装置
公开(公告)号：US06690160B2
公开(公告)日：2004-02-10
申请号：US10127785
申请日：2002-04-22
申请人： Keith Wayland Gray , Walter Craig Wright , Dale Killen
发明人： Keith Wayland Gray , Walter Craig Wright , Dale Killen
IPC分类号： G01B714
CPC分类号： F15B15/2861 , G01D5/04
摘要： A cylinder position sensing system includes a cylinder housing which slidably receives a rod or shaft element. The cylinder housing has an end piece which slidably receives the shaft element. A first axial groove is formed in the shaft element, and a first magnet member is mounted in the first groove. A second helical groove is formed in the shaft element and is spaced apart from the first groove. A second magnet member is mounted in the second groove. A magnetic field sensor is mounted in the cylinder housing so that the sensor generates an output signal as a function of a relative distance between the first and second magnet members as the second element moves with respect to the first element. Preferably, the shaft element includes a central cylindrical shaft and a hollow cylindrical sleeve mounted over and receiving the shaft. Preferably, the first and second grooves are formed in an inner surface of the sleeve, and the sleeve and the end piece are formed of nonferrous material.
摘要翻译：气缸位置检测系统包括可滑动地容纳杆或轴元件的气缸壳体。气缸壳体具有可滑动地容纳轴元件的端部件。第一轴向槽形成在轴元件中，第一磁性构件安装在第一槽中。第二螺旋槽形成在轴元件中并且与第一凹槽间隔开。第二磁体构件安装在第二凹槽中。磁场传感器安装在气缸壳体中，使得当第二元件相对于第一元件移动时，传感器产生作为第一和第二磁体构件之间的相对距离的函数的输出信号。优选地，轴元件包括中心圆柱形轴和安装在轴上并接收轴的中空圆柱形套筒。优选地，第一和第二槽形成在套筒的内表面中，并且套筒和端件由有色金属材料形成。

2. 发明申请

US20060087313A1 System and method for detecting the axial position of a shaft or a member attached thereto 有权
标题翻译：用于检测轴或连接到其上的构件的轴向位置的系统和方法
公开(公告)号：US20060087313A1
公开(公告)日：2006-04-27
申请号：US10974330
申请日：2004-10-27
申请人： Gopal Revankar , Keith Gray , Dale Killen
发明人： Gopal Revankar , Keith Gray , Dale Killen
IPC分类号： G01B7/14
CPC分类号： F15B15/2869 , F15B15/2846 , F15B15/2861
摘要： In accordance with one embodiment of the invention, a method and system for detecting the position of a shaft comprises providing a shaft with defined hardened metallic regions. The shaft has a first hardened metallic region from a surface of the shaft to a first radial depth from the surface at a first longitudinal position. The shaft has a second hardened metallic region from the surface of the shaft to a second radial depth at a second longitudinal position. The second radial depth is different from the first radial depth. A sensor senses an eddy current to detect an alignment of at least one of the first hardened metallic region and the second hardened metallic region with a fixed sensing region at a respective time. A data processor determines a longitudinal position of the shaft with respect to a cylinder at the respective time based on the sensed eddy current.
摘要翻译：根据本发明的一个实施例，用于检测轴的位置的方法和系统包括提供具有限定的硬化金属区域的轴。轴具有从轴的表面到第一纵向位置处的表面的第一径向深度的第一硬化金属区域。轴具有从轴的表面到第二纵向位置的第二径向深度的第二硬化金属区域。第二径向深度与第一径向深度不同。传感器感测涡电流以在相应的时间具有固定感测区域来检测至少一个第一硬化金属区域和第二硬化金属区域的对准。数据处理器基于感测到的涡流来确定轴在相应时刻相对于气缸的纵向位置。

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