1、 电动执行器设计 摘要 电动执行器被广泛应用于各种工业自动化过程的控制环节，能够精确地实现远 程控制。主要由伺服放大器和执行器两大部分组成。电动执行器接受调节器来的 4-20mA 的直流信号，将其线性地转换成机构转角或直线位置位移，用以操作风门、 挡板、阀门等调节机构，以实现自动调节。本设计的重点是设计电动执行器的控 制部分。控制部分主要由单片机和可控硅组成。其中单片机选用 AT89C2051， AT89C2051 单片机是 51 系列单片机的一个成员，是 8051 单片机的简化版。AT89C2051 构成的单片机系统是具有结构最简单、造价最低廉、效率最高的微控制系统，省去了外 部的 RAM、
2、ROM 和接口器件，减少了硬件开销，节省了成本，提高了系统的性价比。可 控硅选用 BTA16。本设计的电动执行器的控制部分主要是控制伺服电机的正反转。 关键词：电动执行器；控制；单片机;可控硅；电机 Electric actuator design ABSTRACT Electric actuators are widely used in various industrial automation control links, which can realize remote control precisely. Mainly by the servo amplifier and the a
3、ctuator is composed of two parts, Electric actuator for DC signal regulator to 420mA, the linear conversion mechanism of the angular or linear displacement, to operate a damper, baffle, valve adjustment mechanism, in order to achieve automatic adjustment. The point of this design is to control the d
4、esign of electric actuator part.Control part is mainly composed of single-chip microcomputer and controlled silicon. The SCM AT89C2051, AT89C2051 microcontroller is a member of the 51 Series MCU, is a simplified version of the 8051 single chip microcomputer. AT89C2051 constitute the SCM system is th
5、e most simple structure, low cost, most efficient micro-control system, eliminating the external RAM, ROM and the interface device, reduces the hardware cost, saves the cost, enhances the system performance. Silicon controlled rectifier using BTA16. The control part of the design of the electric actuator is the main positive inversion control servo motor. Keywords: electric actuator, Control; MCU; thyristor; motor 目 录 第一章 绪论 - 1 1.1 设计的背景和意义 - 1 1.2 概述 - 1 1.3 电动执行器的性能特点 -
