请输入您要查询的英文单词:

 

单词 Dc motors
释义

Dc motors

中文百科

直流电动机 DC motor

(重定向自Dc motors)

直流电动机是依靠直流电驱动的电动机,在小型电器上应用较为广泛。

直流马达的基本构造包括电枢、「场磁铁」、「集电环」、「电刷」。

  1. 电枢:可以绕轴心转动的软铁芯缠绕多圈线圈。
  2. 场磁铁:产生磁场的强力永久磁铁或电磁铁。
  3. 集电环:线圈约两端接至两片半圆形的集电环,随线圈转动,可供改变电流方向的变向器。每转动半圈(180度),线圈上的电流方向就改变一次。
  4. 电刷:通常使用碳制成,集电环接触固定位置的电刷,用以接至电源。
英语百科

DC motor 直流电动机

(重定向自Dc motors)
Workings of a brushed electric motor with a two-pole rotor (armature) and permanent magnet stator.
A brushed DC electric motor generating torque from DC power supply by using an internal mechanical commutation. Stationary permanent magnets form the stator field. Torque is produced by the principle that any current-carrying conductor placed within an external magnetic field experiences a force, known as Lorentz force. In a motor, the magnitude of this Lorentz force (a vector represented by the green arrow), and thus the output torque,is a function for rotor angle, leading to a phenomenon known as torque ripple)

Since this is a single phase two-pole motor, the commutator consists of a split ring, so that the current reverses each half turn ( 180 degrees).

A DC motor is any of a class of electrical machines that converts direct current electrical power into mechanical power. The most common types rely on the forces produced by magnetic fields. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current flow in part of the motor. Most types produce rotary motion; a linear motor directly produces force and motion in a straight line.

随便看

 

英汉双解词典包含3607232条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
京ICP备09058993号 更新时间:2025/5/15 23:52:32