公开(公告)号：US20050231193A1

公开(公告)日：2005-10-20

申请号：US11100628

申请日：2005-04-07

申请人： Yuichi Yamamoto ,  Yukio Shoji ,  Nobumi Yoshida

发明人： Yuichi Yamamoto ,  Yukio Shoji ,  Nobumi Yoshida

IPC分类号： G01D5/14 ,  G01B20060101 ,  G01B7/00 ,  G01B7/02 ,  G01B7/14 ,  G01B7/30 ,  G01R33/00 ,  G01R33/06

CPC分类号： G01D5/145

摘要： A plurality of Hall ICs 34A, 34B are disposed around a magnetic rod 32 that is movable along a central axis. The Hall ICs are disposed in different positions in terms of both a straight line distance coordinate in the direction of the central axis and a rotational angle coordinate around the central axis. The amount of displacement of the magnetic rod 32 is calculated based on the average of output signals from the Hall ICs. Errors in the output signals due to a shift and tilt of the magnetic rod are detected and calibration of the measurement method is carried out.

摘要翻译： 多个霍尔IC34A，34B围绕可沿中心轴线移动的磁棒32设置。 根据中心轴方向的直线距离坐标和围绕中心轴线的旋转角坐标，霍尔IC被设置在不同的位置。 基于来自霍尔IC的输出信号的平均值来计算磁棒32的位移量。 检测由于磁棒的移动和倾斜引起的输出信号的误差，并进行测量方法的校准。

公开(公告)号：US07218099B2

公开(公告)日：2007-05-15

申请号：US11100628

申请日：2005-04-07

申请人： Yuichi Yamamoto ,  Yukio Shoji ,  Nobumi Yoshida

发明人： Yuichi Yamamoto ,  Yukio Shoji ,  Nobumi Yoshida

IPC分类号： G01B7/14 ,  G01B7/30

CPC分类号： G01D5/145

摘要： A plurality of Hall ICs 34A, 34B are disposed around a magnetic rod 32 that is movable along a central axis. The Hall ICs are disposed in different positions in terms of both a straight line distance coordinate in the direction of the central axis and a rotational angle coordinate around the central axis. The amount of displacement of the magnetic rod 32 is calculated based on the average of output signals from the Hall ICs. Errors in the output signals due to a shift and tilt of the magnetic rod are detected and calibration of the measurement method is carried out.

摘要翻译： 多个霍尔IC34A，34B围绕可沿中心轴线移动的磁棒32设置。 根据中心轴方向的直线距离坐标和围绕中心轴线的旋转角坐标，霍尔IC被设置在不同的位置。 基于来自霍尔IC的输出信号的平均值来计算磁棒32的位移量。 检测由于磁棒的移动和倾斜引起的输出信号的误差，并进行测量方法的校准。

公开(公告)号：US07034526B2

公开(公告)日：2006-04-25

申请号：US11135657

申请日：2005-05-24

申请人： Yukio Shoji ,  Yuichi Yamamoto ,  Nobumi Yoshida

发明人： Yukio Shoji ,  Yuichi Yamamoto ,  Nobumi Yoshida

IPC分类号： G01B7/30

CPC分类号： G01D5/145

摘要： In a displacement sensor (10), a shaft (24) of a movable member (14) comprises a tubular part (26) having an opening (26c) at one end. A rod-form permanent is inserted into the tubular part (26) through the opening (26c) . A spacer (32) is fitted over a narrow portion of the rod-form magnet (28). The thickest portion of the magnet (28) and the spacer (32) contact the side wall of the tubular part (26) tightly, so that the magnet (28) is disposed coaxially with the tubular part (26). A stopper (26d) is formed on the opening (26c) of the tubular part (26), so that the magnet (28) does not move axially. Therefore, the magnet (28) is mounted in a prescribed position in a movable member (14) with a high degree of accuracy.

摘要翻译： 在位移传感器（10）中，可移动构件（14）的轴（24）包括在一端具有开口（26c）的管状部分（26）。 杆形永久体通过开口（26c）插入管状部分（26）中。 间隔件（32）装配在杆状磁体（28）的窄部分上。 磁体（28）和间隔物（32）的最厚部分紧密地与管状部分（26）的侧壁接触，使得磁体（28）与管状部分（26）同轴设置。 在管状部件（26）的开口（26c）上形成止动件（26d），使得磁体（28）不轴向移动。 因此，磁体（28）以高精度安装在可动构件（14）中的规定位置。

公开(公告)号：US20050273288A1

公开(公告)日：2005-12-08

申请号：US11127308

申请日：2005-05-12

申请人： Yuichi Yamamoto ,  Yukio Shoji ,  Nobumi Yoshida

发明人： Yuichi Yamamoto ,  Yukio Shoji ,  Nobumi Yoshida

IPC分类号： G01B21/00 ,  G01B7/02 ,  G01F1/12 ,  G05D16/20

CPC分类号： G05D16/2013

摘要： A disclosed device eliminates an error in a displacement amount measured value caused by changes over time in a characteristic of a displacement sensor, and can always maintain high accuracy of measurement. When a hydraulic valve, to which the displacement sensor is mounted, is positioned at predetermined positions, output signals from the displacement sensor are acquired as sample values. On the basis of the acquired sample values, a trend of changes over time in the characteristic of the displacement sensor is computed. Settings of a conversion table, which is used for displacement amount computation, are corrected in a direction along the computed trend of changes.

摘要翻译： 所公开的装置消除了位移传感器的特性中随着时间的变化引起的位移量测量值的误差，并且可以始终保持高的测量精度。 当安装位移传感器的液压阀被定位在预定位置时，获取来自位移传感器的输出信号作为样本值。 基于所获取的样本值，计算位移传感器的特性随时间的变化趋势。 用于位移量计算的转换表的设置沿着计算出的变化趋势的方向被校正。

公开(公告)号：US07124045B2

公开(公告)日：2006-10-17

申请号：US11127308

申请日：2005-05-12

申请人： Yuichi Yamamoto ,  Yukio Shoji ,  Nobumi Yoshida

发明人： Yuichi Yamamoto ,  Yukio Shoji ,  Nobumi Yoshida

IPC分类号： G01F1/12 ,  G01F1/50

CPC分类号： G05D16/2013

摘要： A disclosed device eliminates an error in a displacement amount measured value caused by changes over time in a characteristic of a displacement sensor, and can always maintain high accuracy of measurement. When a hydraulic valve, to which the displacement sensor is mounted, is positioned at predetermined positions, output signals from the displacement sensor are acquired as sample values. On the basis of the acquired sample values, a trend of changes over time in the characteristic of the displacement sensor is computed. Settings of a conversion table, which is used for displacement amount computation, are corrected in a direction along the computed trend of changes.

摘要翻译： 所公开的装置消除了位移传感器的特性中随着时间的变化引起的位移量测量值的误差，并且可以始终保持高的测量精度。 当安装位移传感器的液压阀被定位在预定位置时，获取来自位移传感器的输出信号作为样本值。 基于所获取的样本值，计算位移传感器的特性随时间的变化趋势。 用于位移量计算的转换表的设置沿着计算出的变化趋势的方向被校正。

公开(公告)号：US20050264280A1

公开(公告)日：2005-12-01

申请号：US11135657

申请日：2005-05-24

申请人： Yukio Shoji ,  Yuichi Yamamoto ,  Nobumi Yoshida

发明人： Yukio Shoji ,  Yuichi Yamamoto ,  Nobumi Yoshida

IPC分类号： G01D5/12 ,  G01B7/02 ,  G01B7/14 ,  G01B7/30 ,  G01D5/14

CPC分类号： G01D5/145

摘要： In a displacement sensor (10), a shaft (24) of a movable member (14) comprises a tubular part (26) having an opening (26c) at one end. A rod-form permanent is inserted into the tubular part (26) through the opening (26c) . A spacer (32) is fitted over a narrow portion of the rod-form magnet (28). The thickest portion of the magnet (28) and the spacer (32) contact the side wall of the tubular part (26) tightly, so that the magnet (28) is disposed coaxially with the tubular part (26). A stopper (26d) is formed on the opening (26c) of the tubular part (26), so that the magnet (28) does not move axially. Therefore, the magnet (28) is mounted in a prescribed position in a movable member (14) with a high degree of accuracy.

摘要翻译： 在位移传感器（10）中，可移动构件（14）的轴（24）包括在一端具有开口（26c）的管状部分（26）。 杆形永久体通过开口（26c）插入管状部分（26）中。 间隔件（32）装配在杆状磁体（28）的窄部分上。 磁体（28）和间隔物（32）的最厚部分紧密地与管状部分（26）的侧壁接触，使得磁体（28）与管状部分（26）同轴设置。 在管状部件（26）的开口（26c）上形成止动件（26d），使得磁体（28）不轴向移动。 因此，磁体（28）以高精度安装在可动构件（14）中的规定位置。

公开(公告)号：US07754069B2

公开(公告)日：2010-07-13

申请号：US10802027

申请日：2004-03-17

申请人： Yukio Shoji ,  Nobumi Yoshida

发明人： Yukio Shoji ,  Nobumi Yoshida

IPC分类号： B01D35/30

CPC分类号： F15B21/041 ,  B01D29/23 ,  B01D29/902 ,  B01D2201/188

摘要： It is an object of the present invention to provide a filter for trapping foreign matter in which a filtration element can trap foreign matter that is admixed to a fluid present inside the filter with good reliability and a comparatively high trapping ratio. Hydraulic oil that has flown from an opening portion into a guide space of a first flow path guide is guided downward by the first flow path guide and directed toward a second flow path guide. As a result, the oil passes through a very narrow gap, that is, a gap with a cross sectional area of the flow path narrowed so as to increase the flow velocity of the hydraulic oil, a rising flow of the hydraulic oil is formed, and this flow is spouted up by the second flow path guide and guided by the first flow path guide toward a filter element. Foreign matter admixed to the hydraulic oil rises with good intensity together with the hydraulic oil and is moved by the hydraulic oil toward the filter element. Therefore, foreign matter can be trapped by the filter element with good reliability and a comparative high trapping ratio.

摘要翻译： 本发明的目的是提供一种用于捕集异物的过滤器，其中过滤元件可以以良好的可靠性和较高的捕集率捕获与过滤器内部存在的流体混合的异物。 从开口部流入第一流路导向件的引导空间的液压油被第一流路导向件向下引导并朝向第二流路导向件。 结果，油通过非常窄的间隙，即流路的横截面积变窄的间隙，以增加液压油的流速，形成液压油的上升的流量， 并且该流动被第二流路引导件喷出并被第一流路引导件朝向过滤元件引导。 与液压油混合的异物与液压油一起上升，并被液压油朝向过滤元件移动。 因此，异物可以通过过滤元件被捕获，具有良好的可靠性和较高的捕获率。

公开(公告)号：US07082758B2

公开(公告)日：2006-08-01

申请号：US11130408

申请日：2005-05-17

申请人： Masato Kageyama ,  Yukio Shoji ,  Nobumi Yoshida

发明人： Masato Kageyama ,  Yukio Shoji ,  Nobumi Yoshida

IPC分类号： G01M3/00

CPC分类号： F04B51/00 ,  E02F9/20 ,  E02F9/226 ,  E02F9/2296 ,  F15B19/005 ,  F15B21/041 ,  F15B21/085 ,  F16D31/02

摘要： In a hydraulic machine, hydraulic pump failure is detected and the pump lifespan is estimated before the pump failure occurs. The discharge pressure 122, oil temperature 126, and drain filter differential pressure 120 are measured, a correlative relationship 128 between the filter differential pressure and the discharge pressure is determined, and a representative filter differential pressure 130 is calculated from this correlative relationship. Using an oil temperature-differential pressure correlation function, the representative differential pressure value 130 is corrected so that the variable component 132 caused by the oil temperature 126 is eliminated therefrom. The long-term trend and the short-term trend of the increase over time of the corrected differential pressure is calculated. A pump failure is predicted or the pump lifespan is estimated based on the degree of deviation between the long-term trend and the short-term trend.

摘要翻译： 在液压机中，检测到液压泵故障，并在泵故障发生之前估计泵的寿命。 测量排出压力122，油温126和排水过滤器差压120，确定过滤器压差和排出压力之间的相关关系128，并根据该相关关系计算代表性的过滤器压差130。 使用油温差压相关函数，校正代表压差值130，从而消除由油温126引起的可变部件132。 计算出校正差压随时间的增长的长期趋势和短期趋势。 预计泵故障或者根据长期趋势与短期趋势之间的偏差程度来估计泵的寿命。

公开(公告)号：US20050262838A1

公开(公告)日：2005-12-01

申请号：US11130408

申请日：2005-05-17

申请人： Masato Kageyama ,  Yukio Shoji ,  Nobumi Yoshida

发明人： Masato Kageyama ,  Yukio Shoji ,  Nobumi Yoshida

IPC分类号： E02F9/24 ,  E02F9/20 ,  E02F9/22 ,  F04B49/10 ,  F04B51/00 ,  F15B19/00 ,  F15B20/00 ,  F15B21/04 ,  F15B21/08 ,  F16D31/02 ,  G01L13/00 ,  G01M3/26 ,  G01M13/00 ,  G01M99/00

CPC分类号： F04B51/00 ,  E02F9/20 ,  E02F9/226 ,  E02F9/2296 ,  F15B19/005 ,  F15B21/041 ,  F15B21/085 ,  F16D31/02

摘要： In a hydraulic machine, hydraulic pump failure is detected and the pump lifespan is estimated before the pump failure occurs. The discharge pressure 122, oil temperature 126, and drain filter differential pressure 120 are measured, a correlative relationship 128 between the filter differential pressure and the discharge pressure is determined, and a representative filter differential pressure 130 is calculated from this correlative relationship. Using an oil temperature-differential pressure correlation function, the representative differential pressure value 130 is corrected so that the variable component 132 caused by the oil temperature 126 is eliminated therefrom. The long-term trend and the short-term trend of the increase over time of the corrected differential pressure is calculated. A pump failure is predicted or the pump lifespan is estimated based on the degree of deviation between the long-term trend and the short-term trend.

摘要翻译： 在液压机中，检测到液压泵故障，并在泵故障发生之前估计泵的寿命。 测量排出压力122，油温126和排水过滤器差压120，确定过滤器压差和排出压力之间的相关关系128，并根据该相关关系计算代表性的过滤器压差130。 使用油温差压相关函数，校正代表压差值130，从而消除由油温126引起的可变部件132。 计算出校正差压随时间的增长的长期趋势和短期趋势。 预计泵故障或者根据长期趋势与短期趋势之间的偏差程度来估计泵的寿命。