Stepping motor unit and rotary control valve incorporating the same
    1.
    发明授权
    Stepping motor unit and rotary control valve incorporating the same 失效
    步进电机单元和结合其的旋转控制阀

    公开(公告)号:US5043649A

    公开(公告)日:1991-08-27

    申请号:US456781

    申请日:1989-12-28

    IPC分类号: F16N29/04 H02K37/22 H02P8/14

    CPC分类号: H02K37/22 F16N29/04 H02P8/14

    摘要: A stepping motor unit includes a stepping motor of the type wherein the interior of the stepping motor is filled with an oil, a detector for detecting the temperature of the oil in the stepping motor, a device for varying an upper limiting value of the rotational speed of the stepping motor and an upper limiting value of the rotational acceleration of the stepping motor in view of a current viscous condition of the oil based on the temperature detected by the temperature detector, and a driver for driving the stepping motor at a rotational speed and a rotational acceleration which fall in ranges, respectively, not exceeding the upper limiting values. The stepping motor unit thus constructed has rapid and accurate response characteristics and is capable of operating reliably without falling out of step even when the environmental temperature varies in a very wide range. A rotary control valve incorporating such stepping motor unit is also disclosed.

    摘要翻译: 步进电动机单元包括步进电机,其中步进电机的内部充满油,用于检测步进电机中的油的温度的检测器,用于改变转速的上限值的装置 考虑到基于由温度检测器检测到的温度的油的当前粘性状况,步进电动机的旋转加速度的上限值和用于以转速驱动步进电动机的驱动器,以及 分别落在范围内的旋转加速度不超过上限值。 如此构造的步进电动机单元具有快速且准确的响应特性,即使当环境温度在非常宽的范围内变化时也能够可靠地运行而不会失步。 还公开了一种结合了这种步进马达单元的旋转控制阀。