公开(公告)号：US5083468A

公开(公告)日：1992-01-28

申请号：US490665

申请日：1990-03-02

申请人： Klaus Dobler ,  Hansjorg Hachtel

发明人： Klaus Dobler ,  Hansjorg Hachtel

IPC分类号： G01B7/00 ,  G01B7/30 ,  G01D5/20 ,  G01D5/242 ,  G01L3/10

CPC分类号： G01D5/202 ,  G01L3/105

摘要： A measuring device for contact-free measuring of a rotation angle and/or torque of shaft comprises two coaxial bodies fastened on shaft stubs and rotatable relative to one another. The bodies have on their adjacent outer surfaces an equal number of areas having high and low electrical conductivity alternating in the circumferential direction. The bodies are enclosed by coils connected in a Wheatstone bridge circuit. A high-frequency alternating current flows through the coils and produces a magnetic alternating field which generates eddy currents in the outer surface areas of the two bodies in proportion to the magnitude of the surfaces of the two bodies penetrated by the magnetic alternating field.

摘要翻译： PCT No.PCT / DE88 / 00468 Sec。 371日期1990年3月2日 102（e）1990年3月2日PCT PCT。1988年7月28日PCT公布。 第WO89 / 02058号公报 日期：1989年3月9日。用于无接触地测量轴的旋转角度和/或扭矩的测量装置包括固定在轴桩上并相对于彼此可旋转的两个同轴体。 主体在其相邻的外表面上具有相等数量的在圆周方向上交替具有高导电性和低导电性的区域。 机体由惠斯登电桥电路中连接的线圈封闭。 高频交流电流流过线圈并产生磁性交变场，其在与磁性交变场所穿透的两个体的表面的大小成比例地在两个体的外表面区域中产生涡流。

公开(公告)号：US4574237A

公开(公告)日：1986-03-04

申请号：US534301

申请日：1983-09-21

申请人： Hansjorg Hachtel ,  Klaus Dobler

发明人： Hansjorg Hachtel ,  Klaus Dobler

IPC分类号： G01D5/245 ,  G01P3/481 ,  G01P3/49 ,  G01P3/48 ,  G01P3/54

CPC分类号： G01P3/481

摘要： A coil sensor excited with alternating current and connected in a circuit for detecting changes in the coil impedance producing a signal exceeding a fixed threshold value in response to the revolution of a wheel with features providing periodic changes in the spacing between the coil and the wheel, has its periphery subdivided into zones where the surface material is alternately thereomagnetic and non-theromagnetic. With a suitable setting of the frequency of the exciting alternating current and a suitable choice of the materials with respect to their eddy current and magnetic induction effect on the inductance of the coil, it is possible to suppress the signal of once per revolution periodicity resulting from wheel eccentricity, bearing wobble or the like.

摘要翻译： 线圈传感器用交流电激励并连接在电路中，用于检测线圈阻抗的变化，产生响应于车轮旋转的超过固定阈值的信号，该特征提供线圈和车轮之间的间隔的周期性变化， 其外围细分为表面材料交替磁场和非磁性的区域。 通过合适的激励交流电频率设置和材料的相对于其涡电流和磁感应效应对线圈电感的适当选择，可以抑制一圈每周期的信号 车轮偏心，轴承摆动等。

公开(公告)号：US4417208A

公开(公告)日：1983-11-22

申请号：US214743

申请日：1980-12-09

申请人： Hansjorg Hachtel ,  Klaus Dobler

发明人： Hansjorg Hachtel ,  Klaus Dobler

IPC分类号： G01P3/481 ,  G01C22/02 ,  G01D5/20 ,  G01D5/245 ,  G01P3/488 ,  G01P3/49 ,  G01P3/50 ,  G01P3/46 ,  G01P3/52

CPC分类号： G01P3/49 ,  G01C22/02 ,  G01D5/2046 ,  G01D5/2053 ,  G01P3/488 ,  G01P3/505

摘要： An apparatus for contactless distance, or travel and/or speed measurement of bodies moving substantially uniformly is disclosed. The apparatus has zones of electrically conductive material which are displaced in synchronism with the body and a measuring transducer disposed at a distance therefrom and spatially fixed, the measuring transducer having a high-frequency alternating current flowing through it. To permit construction of a measuring transducer having large geometric dimensions while detecting narrow electrically conductive zones (10) of attaining measurement signals which are relatively invulnerable to malfunction, the measuring transducer (15) is extended spatially over a multiplicity of zones (10) and has individual, active measuring faces (16) which are interconnected and spatially demarcated. The distance of these active measuring faces (16) from one another, viewed in the direction of movement of the zones (10), corresponds substantially to the distance (b) of adjacent zones (10) and the width of the measuring faces, also viewed in the direction of movement of the zones (10), corresponds substantially to the width (c) of the zones (10).

摘要翻译： 公开了用于非接触距离的设备，或者基本均匀地移动的主体的行进和/或速度测量。 该装置具有与主体同步位移的导电材料区域，以及设置在距离空间固定的测量传感器，测量换能器具有流过其的高频交流电流。 为了允许构造具有大几何尺寸的测量传感器，同时检测窄导电区（10）以获得相对不易发生故障的测量信号，测量传感器（15）在空间上延伸多个区（10），并具有 独立的，主动的测量面（16），其互连并在空间上划定。 从区域（10）的移动方向看，这些主动测量面（16）彼此的距离基本上对应于相邻区域（10）的距离（b）和测量面的宽度 从区域（10）的移动方向观察，基本上对应于区域（10）的宽度（c）。

公开(公告)号：US5205256A

公开(公告)日：1993-04-27

申请号：US671862

申请日：1991-04-01

申请人： Klaus Dobler ,  Hansjorg Hachtel

发明人： Klaus Dobler ,  Hansjorg Hachtel

IPC分类号： F02M41/12 ,  F02M59/44

CPC分类号： F02M59/44 ,  F02M41/126 ,  F02M41/128 ,  F02M2200/24

摘要： Fuel injection pump for internal combustion engines comprising a displacement pickup for determining the position of control elements arranged in a pump housing. The displacement pickup comprises a movable part, which is arranged in the pump housing and is connected with the control element, and a stationary part which is arranged on the outside of the pump housing. The position of the movable part of the displacement pickup is determined by the stationary part by means of a measuring process which measures in a contactless manner, e.g. by means of the induction or eddy current principle.

摘要翻译： PCT No.PCT / DE89 / 00498 Sec。 371日期1991年4月1日 102（e）日期1991年4月1日PCT PCT 1989年8月1日PCT公布。 第WO90 / 03511号公报 日期1994年4月5日。用于内燃机的燃料喷射泵，包括用于确定布置在泵壳体中的控制元件的位置的位移拾取器。 位移拾取器包括设置在泵壳体中并与控制元件连接的可移动部件和布置在泵壳体的外侧上的固定部件。 位移拾取器的可移动部分的位置由静止部分借助于以非接触方式测量的测量过程来确定，例如， 通过感应或涡流原理。

公开(公告)号：US5025213A

公开(公告)日：1991-06-18

申请号：US391555

申请日：1989-07-26

申请人： Klaus Dobler ,  Hansjorg Hachtel

发明人： Klaus Dobler ,  Hansjorg Hachtel

IPC分类号： G01B7/00 ,  G01D5/20

CPC分类号： G01D5/202 ,  G01D5/2053

摘要： A device for determining a length of linear movement of an angle of rotation of a machine part, and comprising spaced first and second bodies, a coil arranged on one of the first and second bodies, and a diaphragm connectable to a machine part for joint displacement therewith and arranged between the first and second bodies for movement relative to the one of the first and second bodies, which diaphragm has an area formed in such a manner than an inductive effect and an eddy current effect which result from axial oscillation of the diaphragm, upon flow of an alternating current through the coil, cancel each other with respect to their electrical action on the coil.

摘要翻译： PCT No.PCT / DE88 / 00713 Sec。 371日期：1989年7月26日 102（e）日期1989年7月26日PCT提交1988年11月17日PCT公布。 公开号WO89 / 05438 日期：1989年6月15日。一种用于确定机器部件的旋转角度的线性运动的长度的装置，并且包括间隔开的第一和第二主体，布置在第一和第二主体中的一个上的线圈以及可连接的隔膜 涉及一种用于与其接合位移的机器部件，并布置在第一和第二主体之间，用于相对于第一和第二主体中的一个移动，该隔膜具有以不同于感应效应和涡流效应的方式形成的区域 从隔膜的轴向振动，当交流电流流过线圈时，相对于线圈上的电作用彼此抵消。

公开(公告)号：US4448084A

公开(公告)日：1984-05-15

申请号：US381316

申请日：1982-05-24

申请人： Klaus Dobler ,  Hansjorg Hachtel

发明人： Klaus Dobler ,  Hansjorg Hachtel

IPC分类号： G01B7/30 ,  G01L3/10

CPC分类号： G01B7/30 ,  G01L3/105

摘要： To improve the output sensitivity of two concentric, telescopic sleeves (8, 9), respectively secured at their end portions to stub shafts (2, 5; 3, 4) which are aligned, and connected, for example, by a torsion element (1), so that torque being transmitted by the shafts through the torsion element can be determined, the sleeves are cut with axial slits (11, 16, 17) in which the cuts of one of the sleeves extend only over half the axial length and are offset with respect to each other, two windings (20, 21) being wound over a winding form (18) surrounding the outer one of the sleeves, and positioned centrally with respect to the half-slits (16, 17); upon applying high-frequency alternating current to the windings, and relative rotation of the sleeves, which will bring one of the half-slits in alignment with the axially extending slit (11) in the other sleeve, while rotating the other half-slit out of alignment, changes in inductance of the windings can be determined due to change in eddy currents being induced in the respective sleeve portions. The width (b) of the conductive sleeve portions (14, 15) to the width (a) of the slits which, effectively, form non-conductive circumferential portions, should be between 10:1 and 5:1, the spacing between the sleeves being as small as possible, for example in the order of 0.05 mm to 0.25 mm.

摘要翻译： 为了提高两个同心的伸缩套筒（8,9）的输出灵敏​​度，分别固定在其端部处的短轴（2,5; 3，4）上，这些短轴被对准并且例如通过扭转元件 可以确定轴通过扭转元件传递的扭矩，套筒用轴向狭缝（11,16,17）切割，其中一个套筒的切口仅延伸一半的轴向长度， 两个绕组（20,21）缠绕在围绕外部一个套筒的缠绕形式（18）上并且相对于半缝隙（16,17）位于中心位置; 在向绕组施加高频交流电流时，以及套筒的相对旋转，这将使另一个套筒中的一个半狭缝与轴向延伸的狭缝（11）对准，同时将另一半狭缝向外旋转 由于在相应的套筒部分中引起的涡流的变化，可以确定绕组的电感的变化。 导电套筒部分（14,15）与有效形成不导电圆周部分的狭缝宽度（a）的宽度（b）应在10：1和5：1之间， 袖子尽可能小，例如为0.05mm至0.25mm。

公开(公告)号：US4356732A

公开(公告)日：1982-11-02

申请号：US213589

申请日：1980-12-05

申请人： Hansjorg Hachtel ,  Klaus Dobler

发明人： Hansjorg Hachtel ,  Klaus Dobler

IPC分类号： G01D5/20 ,  G01L3/10

CPC分类号： G01D5/202 ,  G01L3/105

摘要： Measuring apparatus for the torque transmitted through a shaft consists of a first and second induction member respectively mounted at the input and the output end of the shaft for rotation therewith. The induction members are discs or concentric cylindrical elements made of a conductive material, each member having sector-shaped cut-out portions. The sector-shaped cut-out portions of the two members are aligned for a predetermined starting torque. A coil is mounted opposite one of the members and generates a high frequency magnetic field. The magnetic field induces eddy currents in the members. The eddy currents in the second member increase as the conduction material of the second member shifts toward exposure to the coil through the cut-out portions of the first member. Increases in eddy currents cause decreases in inductivity of the coil which, when measured, constitute a measure of the transmitted torque.

摘要翻译： 用于通过轴传递的扭矩的测量装置包括分别安装在轴的输入端和输出端处的第一和第二感应构件，用于与其一起旋转。 感应构件是由导电材料制成的盘或同心圆柱形元件，每个构件具有扇形切口部分。 两个构件的扇形切口部分对准预定的起动转矩。 一个线圈与其中一个构件相对安装，并产生高频磁场。 磁场在构件中引起涡流。 当第二构件的导电材料通过第一构件的切口部分转向暴露于线圈时，第二构件中的涡流增加。 涡流增加导致线圈的电感降低，当被测量时，线圈构成传递转矩的量度。