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    • 7. 发明公开
    • Analog panel meter mechanism
    • 机械师Teil eines analogen Schalttafel仪器。
    • EP0216988A1
    • 1987-04-08
    • EP86105829.5
    • 1983-07-01
    • SANGAMO WESTON, INC.
    • Nador, Julius
    • G01R1/16G01R5/06
    • G01R5/06G01R1/16
    • A moving coil (10) permament magnet (70) electrical meter mechanism comprises pole pieces (6) forming a housing for the permanent magnet (70), and a yoke structure forming with the pole pieces an air gap in which the moving coil moves. The mechanism is provided with a compensating shunt (66,68), made from a material of temperature dependent permeability, for compensating for variations in flux density in the air gap due to temperature changes. The shunt is positioned adjacent and parallel to the magnet, and has its thickness selected to reduce the variations in flux denisty in the air gap to within predetermined limits.
    • 动圈(10)磁铁(70)电表机构包括形成用于永磁体(70)的壳体的磁极片(6),以及形成有极片的磁轭结构,其中移动线圈移动。 该机构设置有由温度依赖性磁导率的材料制成的补偿分流器(66,68),用于补偿气隙中由于温度变化引起的通量密度的变化。 分流器位于与磁体相邻且平行的位置,并且其厚度被选择以将气隙中的通量衰减的变化减小到预定限度内。
    • 10. 发明授权
    • Moving magnet galvanometers having a varied density winding distribution
coil for a desired performance characteristic
    • 具有所需性能特性的变体密度分布线圈的移动磁铁电位器
    • US5225770A
    • 1993-07-06
    • US660705
    • 1991-02-25
    • Jean Montagu
    • Jean Montagu
    • G01R5/12G01R5/06G01R5/16G02B26/10H02K26/00
    • H02K26/00G01R5/06
    • A galvanometer is shown, which includes a cylindrical magnetic rotor polarized into two essentially semi-cylindrical poles on opposite sides of its axis. Two coil portions are disposed on opposite sides of the rotor, separated by a plane of symmetry that is in essential alignment with the poles of the rotor at the center of its range of motion. The legs of each grouping of turns of each coil portion are disposed in a distribution beginning at a point corresponding to the radial surface of the bobbin on which the coil portion is wound, and extending continuously substantially to the plane of symmetry. The distribution may be lower in density at the plane of symmetry than spaced therefrom and may approximate an inverse cosine distribution. A rotor is shown that includes a thin-walled torque-bearing sleeve encircling at least a portion of the magnet and is joined to the output shaft and the magnet. A fastener anchors the bobbin to the shell to prevent relative rotation therebetween. A position transducer is linked to the rotor outside of the space between the bearings to favorably affect the first resonance of the rotor. A winding fixture is shown, and the process of making the coils is described.
    • 示出了电流计,其包括圆柱形磁转子,其在其轴线的相对侧上被极化成两个基本上为半圆柱形的极。 两个线圈部分设置在转子的相对侧上,该对称平面与转子的极点在其运动范围的中心处必须对齐。 每个线圈部分的每组匝的腿部设置在从与卷绕线圈部分的线轴的径向表面相对应的点开始,并且基本上延伸到对称平面。 分布在对称平面处的密度可能低于其间隔,并且可以接近反余弦分布。 示出了一种转子,其包括环绕至少一部分磁体的薄壁扭矩承载套筒并且连接到输出轴和磁体。 紧固件将线轴固定到壳体以防止它们之间的相对旋转。 位置传感器在轴承之间的空间外部连接到转子,以有利地影响转子的第一共振。 示出了卷绕夹具,并且描述了制造线圈的过程。