摘 要: 电力拖动自动控制设备的控制对象为各类电动机或其他执行电器,控制原理为通过对控制对象的起动、停止、正反转、调速、制动等的运行方式采用电气控制的方法实现控制,进而在生产过程中实现自动化控制。为了更好地控制电动机的运行,需要设计相应的控制线路。从逻辑代数的基本概念入手,探讨逻辑代数在设计三相异步电动机控制线路中的应用,针对三相异步电动机连续运转和正反转控制线路设计进行详细介绍。
关键词: 逻辑代数 三相异步电动机 连续控制 电气联锁
中图分类号: TM92文献标识码: A文章编号: 1679-3567(2024)05-0082-03
Application of Logic Algebra in the Design of Control Circuits for Three-Phase Asynchronous Motors
LU Mingxing
Yuncheng Mechanical and Electrical Engineering School, Yuncheng, Shanxi Province, 044000 China
Abstract: The control objects of electric drive automation control equipment are all kinds of motors or other executive electrical appliances, and its control principle is to use electrical control methods to control the operation modes of control objects, such as starting, stopping, positive and negative rotation, speed regulation and braking, and then realize automatic control in the production process. In order to better control the operation of the motor, it is necessary to design corresponding control circuits. This paper starts with the basic concept of logic algebra, discusses its application in the design of control circuits for three-phase asynchronous motors, and introduces the design of the continuous operation and forward-reverse control circuits of three-phase asynchronous motors in detail.
Key Words: Logical algebra; Three-phase asynchronous motor; Continuous control; Electrical interlock
逻辑设计法利用逻辑代数来进行控制线路设计,根据实际生产工艺的要求,将执行元件需要的工作信号和主令电器的接通与断开状态看成逻辑变量,然后根据实际的控制要求,将逻辑变量之间的逻辑关系用逻辑关系式来表达,并根据基本公式和运算规律进行简化,根据最简式设计出需要的控制线路[1]。




