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单词 Limit switch
释义

Limit switch

中文百科

极限开关

极限开关
桥的可动件上的极限开关

极限开关是电机工程中的一种开关,可以用物体的运动或是物体是否存在来启动或关闭。

极限开关常作为控制系统中控制机械的一部份,例如安全互锁,或是计算一物体通过某一点的次数。极限开关是一个机电设备,其中有一个和一个接点机械链接的致动器。若物体接触致动器,就会触动接点,打开或是关闭电气的连接。

因为极限开关坚固,容易安全,其运作的可靠性高,常用在许多不同的环境及应用中。极限开关可以侦测物体是否存在、也可以侦测物体是否通过某一点,或是其最后是否有停在某一点。极限开关最早是用来定义一物体行进的范围,因此称为极限开关。

英语百科

Limit switch 极限开关

 A limit switch with a roller-lever operator; this is installed on a gate on a canal lock, and indicates the position of a gate to a control system.
A limit switch mounted on a moving part of a bridge.

In electrical engineering a limit switch is a switch operated by the motion of a machine part or presence of an object.

They are used for controlling machinery as part of a control system, as a safety interlocks, or to count objects passing a point. A limit switch is an electromechanical device that consists of an actuator mechanically linked to a set of contacts. When an object comes into contact with the actuator, the device operates the contacts to make or break an electrical connection.

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更新时间:2025/6/19 7:20:15