Integrated motor rotating speed measuring mechanism of sensor arranged in motor end cover

一种电机端盖内置传感器的一体化电机转速测量机构

Abstract

The invention provides an integrated motor rotating speed measuring mechanism of a sensor arranged in a motor end cover. A bearing is embedded into the center of the end cover and plays a role in supporting the rotation of a motor rotating shaft, and the end of the motor rotating shaft is embedded into a bearing inner hole; a radical magnetized permanent magnet steel is arranged in the center of the end face of the rotating shaft and rotates together with the motor rotating shaft, and senses signals in a Hall sensor chip; a circular circuit board is fixed in a circular sunken table in the center of the end cover by using screws; the Hall sensor chip is positioned in the center of the surface of the circular circuit board and used for sensing the rotation of the motor rotating shaft; and one end of a cable is directly welded on the circular circuit board, and the other end of the cable is led out of the end cover through a cable processing hole of the end cover so as to output the signals. By adopting an integrated structure, the rotating speed of a motor rotor is measured more compactly and reliably, and installation and debugging of external devices are avoided. The orthogonal pulse signals can be measured by adopting a counter, so the method is simple and reliable. Because the Hall sensor chip and the motor rotating shaft are arranged in non contact, the reliability is greatly improved.
本发明提供一种电机端盖内置传感器的一体化电机转速测量机构,端盖中心嵌设有轴承起支撑电机转轴旋转的作用,电机转轴端部嵌于轴承内孔中;径向磁化的永磁体磁钢安装于转轴端面中心处随电机转轴旋转,并在霍尔传感器芯片中感应信号;圆形电路板用螺钉固定于端盖中心圆形沉台中;霍尔传感器芯片位于圆形电路板表面中心处感知电机转轴的旋转;电缆一端直接焊在圆形电路板上,另一端通过端盖的加工电缆孔引出端盖以便信号输出。采用一体化的结构,使电机转子转速测量更加紧凑、可靠,且免去外部装置的安装和调试。这种正交脉冲信号可以采用计数器测量,因此方法简单可靠。由于霍尔传感器芯片与电机转轴为无接触安装,可靠性大为提高。

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Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
    CN-1540837-AOctober 27, 2004四川东风电机厂有限公司电动汽车驱动电机
    CN-200969555-YOctober 31, 2007中国江南航天工业集团林泉电机厂一体化无刷直流测速发电机
    CN-201378776-YJanuary 06, 2010涂阳东Permanent magnet DC motor with magnetic brushes
    CN-201966752-USeptember 07, 2011胡磊Motor speed measuring control device
    JP-2006121828-AMay 11, 2006Fuji Heavy Ind Ltd, 富士重工業株式会社Permanent-magnet motor tester

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