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    • 4. 发明授权
    • Rotating magnetic object motion sensor with unbalanced bias
    • 具有不平衡偏置的旋转磁体运动传感器
    • US6140813A
    • 2000-10-31
    • US742488
    • 1996-11-01
    • Hiroshi SakanoueNoriaki HayashiIzuru ShinjoNaoki HiraokaWataru FukuiYutaka Ohashi
    • Hiroshi SakanoueNoriaki HayashiIzuru ShinjoNaoki HiraokaWataru FukuiYutaka Ohashi
    • G01B7/30G01B7/00G01D5/245G01P3/487H01H36/00G01P3/44G01D5/14G01P3/488
    • G01P3/487
    • A magnetic object motion sensor which can operate with high accuracy not only when a magnetic object moves at high speeds but also even when it moves at low speeds, which can be produced with a greater production tolerance and a greater dimensional tolerance. The magnetic object motion sensor includes: magnetoelectric transducer elements disposed opposite protrusions of a moving magnetic object; a magnet for generating bias magnetic flux toward the magnetoelectric transducer elements; unbalanced bias producing means for producing imbalance in the magnetic field sensitivity between the magnetoelectric transducer elements; a differential amplifier for amplifying in a differential fashion the electric signals output by the magnetoelectric transducer elements; a waveform shaping circuit for converting the differential signal output by the differential amplifier to a pulse signal corresponding to the edges of the magnetic material protrusion; the unbalanced bias producing means producing a difference in the amplitude of the magnetic flux density between that applied to one element of the pair of magnetoelectric transducer elements and that applied to the other element so that the difference in the electric signal level corresponding to the difference in the amplitude of the magnetic flux density becomes greater than the hysteresis of the waveform shaping circuit, thereby, in effect, introducing imbalance in the sensitivity between the magnetoelectric transducer elements.
    • 磁性物体运动传感器可以高精度地操作,不仅当磁性物体以高速移动时,而且即使当其以低速移动时,也可以以更大的制造公差和更大的尺寸公差产生。 磁性物体运动传感器包括:与运动的磁性物体相对的突起设置的磁电换能器元件; 用于向磁电换能器元件产生偏磁通的磁体; 用于产生磁电换能器元件之间的磁场灵敏度不平衡的不平衡偏压产生装置; 用于以差分方式放大由电磁换能器元件输出的电信号的差分放大器; 波形整形电路,用于将由差分放大器输出的差分信号转换为对应于磁性材料突起的边缘的脉冲信号; 所述不平衡偏置产生装置产生施加到所述一对磁电换能器元件中的一个元件之间的磁通密度的振幅和施加到另一元件的磁通密度的差异,使得与所述另一元件相对应的电信号电平的差异 磁通密度的振幅变得大于波形整形电路的滞后,从而实际上引入了磁电换能器元件之间的灵敏度不平衡。
    • 6. 发明授权
    • Controller for four-stroke cycle internal-combustion engine
    • 四冲程循环内燃机控制器
    • US5575259A
    • 1996-11-19
    • US578025
    • 1995-12-26
    • Wataru FukuiYutaka Ohashi
    • Wataru FukuiYutaka Ohashi
    • F02B75/02F02D43/00F02P5/04F02P5/15F02P11/02F02P5/00
    • F02P5/045F02P11/02F02P5/1506F02B2075/027Y02T10/46
    • A controller for a four-stroke cycle internal-combustion engine does not incur an operation failure in an engine even at the startup when injectors are placed under injection control at the same time and a cylinder group to be ignited is placed under ignition control at the same time. The controller for the four-stroke cycle internal-combustion engine has an angle detector for detecting the angle of rotation of a four-stroke cycle internal-combustion engine in synchronization with the rotation of the four-stroke cycle internal-combustion engine; an injector for injecting fuel which is provided for each cylinder of the four-stroke cycle internal-combustion engine; a plurality of ignition coils for generating high voltage for ignition for the respective cylinders; a fuel injection control unit for making the injectors inject fuel to the respective cylinders at the same time; and an ignition control unit for performing control by applying high voltage from the ignition coils so that the spark plugs may discharge at the same time to a cylinder group to be ignited. The fuel injection control unit performs the fuel injection after a predetermined time from the moment the control of the ignition coils was performed.
    • 用于四冲程循环内燃机的控制器即使在启动时也不会引起发动机的操作故障,同时喷射器同时放置在喷射控制下,并且要点燃的气缸组被置于点火控制下 同时。 用于四冲程循环内燃机的控制器具有角度检测器,用于与四冲程循环内燃机的旋转同步地检测四冲程循环内燃机的旋转角度; 用于喷射燃料的喷射器,其被设置用于四冲程循环内燃机的每个气缸; 多个点火线圈,用于为各个气缸产生点火的高电压; 燃料喷射控制单元,用于使喷射器同时向各个气缸喷射燃料; 以及点火控制单元,用于通过施加来自点火线圈的高电压来执行控制,使得火花塞可以同时放电到要点燃的气缸组。 燃料喷射控制单元从执行点火线圈的控制之后的预定时间起执行燃料喷射。
    • 7. 发明授权
    • Manufacturing method of a rotation sensor
    • 旋转传感器的制造方法
    • US06427316B1
    • 2002-08-06
    • US09432158
    • 1999-11-02
    • Izuru ShinjoNoriaki HayashiNaoki HiraokaWataru FukuiYutaka Ohashi
    • Izuru ShinjoNoriaki HayashiNaoki HiraokaWataru FukuiYutaka Ohashi
    • H01F706
    • G01P1/026B29C45/14655G01P1/00G01P3/487G01P3/488Y10T29/4902Y10T29/49121Y10T29/49158
    • A method of manufacturing a rotation sensor is provided. In the method, an insert conductor having a predetermined shape and having at least a connector terminal and a conversion device terminal is provided. The insert conductor is insert-molded in a resin base such that at least the connector terminal and the conversion device terminal of the insert conductor remain exposed from the resin base. A resin connector part is molded such that the resin connector part encircles the connector terminal. Also, a magnetoelectric conversion device is connected to the conversion device terminal of the insert conductor, and positioning parts are provided at a tip of the resin base. In addition, the magnetoelectric conversion device is sandwiched between the positioning parts to securely hold the magnetoelectric conversion device, and a press fit part is formed at the tip of the resin base. Also, an output terminal of the magnetoelectric conversion device is pressed against the conversion device terminal of the insert conductor with the press fit part.
    • 提供一种制造旋转传感器的方法。 在该方法中,提供具有预定形状并且至少具有连接器端子和转换装置端子的插入导体。 插入导体嵌入成型在树脂基底中,使得至少插入导体的连接器端子和转换装置端子保持暴露于树脂基部。 树脂连接器部件被模制成使得树脂连接器部分环绕连接器端子。 此外,磁电转换装置连接到插入导体的转换装置端子,并且定位部分设置在树脂基部的尖端处。 此外,磁电转换装置夹在定位部件之间,以牢固地保持磁电转换装置,并且在树脂基座的尖端处形成压配合部分。 此外,磁压转换装置的输出端子通过压配合部分压靠在插入导体的转换装置端子上。