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公开(公告)号：US4696192A
公开(公告)日：1987-09-29
申请号：US882535
申请日：1986-07-07
CPC分类号： H01L41/125 , G01L9/16 , Y10S73/02
摘要： A fluid pressure sensor includes a body made of a soft magnetic material with a groove formed therein, and a coil is installed in the body in the groove. One magnetostrictive disc is placed on the body over the groove, and two non-magnetic discs are placed over the magnetostrictive disc. A casing is provided for accommodating the body carrying the coil, the magnetostrictive disc, and the non-magnetic discs, and it is closed by a lid member which has a surface for receiving a fluid pressure. A plurality of through holes are formed in the lid member within the fluid pressure receiving surface such that the through holes extend to the non-magnetic disc at position over the groove, whereby the magnetostrictive plate is partially distorted by the fluid pressure.
摘要翻译： 流体压力传感器包括由软磁材料制成的主体，其中形成有凹槽，并且线圈被安装在凹槽中的主体中。 一个磁致伸缩盘被放置在凹槽上的主体上，并且两个非磁盘被放置在磁致伸缩盘的上方。 提供壳体，用于容纳承载线圈，磁致伸缩盘和非磁盘的主体，并且其由具有用于接收流体压力的表面的盖构件封闭。 多个通孔形成在流体压力接收表面内的盖构件中，使得通孔在凹槽上方的位置延伸到非磁盘，由此磁致伸缩板由流体压力部分地变形。
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公开(公告)号：US4780671A
公开(公告)日：1988-10-25
申请号：US854605
申请日：1986-04-22
CPC分类号： G01L3/102 , G01L3/103 , H01R13/6683 , Y10S73/02
摘要： A torque sensor includes a cylindrical body disposed concentrically around a shaft and having its opposite ends secured to the surface of the shaft through elastic bodies, a layer of soft magnetic alloy having a magnetostriction property and secured to the surface of the cylindrical body, and a coil disposed concentrically around the layer with an air gap between it and the layer. The torque sensor is constructed such that a strain produced on the surface of the cylindrical body by a torque is converted into a change of a relative permeability of the soft magnetic alloy due to a reverse magnetostriction effect which is detected as a change of inductance of the coil. When the shaft thermally expands or deflects, the elastic bodies act to permit only a torque to be transmitted to the cylindrical body, so that a uniform output is provided without the influence of a thermal strain and deflection of the shaft.
摘要翻译： 扭矩传感器包括：圆柱体，其同轴地设置在轴的周围，并且其相对端部通过弹性体固定在轴的表面，具有磁致伸缩性质的软磁性合金层固定在圆筒体的表面上， 线圈同心地设置在层之间，并在其与层之间具有气隙。 转矩传感器被构造成使得通过扭矩在圆柱体的表面上产生的应变由于反向磁致伸缩效应而被转换为软磁性合金的相对磁导率的变化，该反向磁致伸缩效应被检测为电感的变化 线圈 当轴热膨胀或偏转时，弹性体用于仅允许扭矩传递到圆柱体，从而在不受轴应变和轴的偏转的影响的情况下提供均匀的输出。
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公开(公告)号：US4812758A
公开(公告)日：1989-03-14
申请号：US853717
申请日：1986-04-18
摘要： The long-term measurement stability of a magnetostrictive effect strain or stress sensor that uses an amorphous magnetic alloy excited by a magnetic field is improved by generating a magnetic field from an electric current formed from a superposed alternating current waveform and a recurring rectangular current waveform that has a larger amplitude at its start-up and which converges to a smaller amplitude after a predetermined time period or an electric current formed from a superposed direct current component and an alternating current component having constant amplitude and a frequency that varies in a recurring manner between a high frequency and a lower frequency.
摘要翻译： 使用由磁场激发的非晶磁性合金的磁致伸缩效应应变或应力传感器的长期测量稳定性通过从叠加的交流波形和重复的矩形电流波形形成的电流产生磁场来改善， 在其启动时具有较大的幅度，并且在预定时间段之后会聚到较小的振幅，或者由叠加的直流分量和具有恒定幅度和频率的交流分量形成的电流以 频率高，频率较低。
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公开(公告)号：US4765192A
公开(公告)日：1988-08-23
申请号：US928408
申请日：1986-11-10
IPC分类号： G01L3/10
摘要： A torque sensor which includes a pair of multiple thread portions integrally formed in the surface of a rotating shaft in such a manner that one of the multiple thread portions forms a positive angle with the thrust direction of the rotating shaft and the other forms a negative angle with the thrust direction. The threads of the multiple thread portions are at least made of soft magnetic alloy having magnetostrictive properties. A pair of coils are arranged concentrically on the outer side of the multiple thread portions at a given distance therefrom. The strain produced in the surface of the rotating shaft is detected as inductance changes of the coils when the permeability of the soft magnetic alloy changes. The direction and magnitude of the torque are detected because of the difference between the inductances of the coils.
摘要翻译： 一种转矩传感器，包括一对多个螺纹部，其一体地形成在旋转轴的表面中，使得多个螺纹部中的一个与旋转轴的推力方向成正角，而另一个形成负角 推力方向。 多个螺纹部分的螺纹至少由具有磁致伸缩特性的软磁合金制成。 一对线圈同心地布置在多个螺纹部分的外侧上，距离其给定距离处。 当软磁性合金的磁导率变化时，在旋转轴的表面产生的应变被检测为线圈的电感变化。 由于线圈的电感之间的差异，检测到转矩的方向和幅度。
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公开(公告)号：US4823617A
公开(公告)日：1989-04-25
申请号：US218827
申请日：1988-07-14
申请人： Hiroyuki Hase , Shinya Tokuono , Masayuki Wakamiya
发明人： Hiroyuki Hase , Shinya Tokuono , Masayuki Wakamiya
摘要： A torque sensor comprising strips of an amorphous magnetic alloy fixed to the surface of a rotary shaft so as to utilize a inverse magnetostrictive effect of the amorphous magnetic alloy is operated in a state in which a predetermined amount of internal compressive strain is previously produced in the strips, so that the torque sensor can operate without any temperature-dependent change in its sensitivity and without occurrence of a hysteresis of its output.
摘要翻译： 包括固定在旋转轴表面上以便利用非晶磁性合金的反向磁致伸缩效应的非晶磁性合金条的转矩传感器在预先产生预定量的内部压缩应变的状态下运行 使得转矩传感器可以在其灵敏度没有任何温度相关的变化而没有出现其输出滞后的情况下运行。
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