一种小型数字电动舵机系统设计与实现  

Design and Implementation of a Small Digital-electric Servo System

作　　者：伍城 赵怀林[1] 朱纪洪[2] 

机构地区：[1]上海应用技术学院电气与电子工程学院,上海201418 [2]清华大学计算机系,北京100084

出　　处：《自动化与仪表》2015年第10期10-14,36,共6页Automation & Instrumentation

基　　金：国家自然科学基金项目(61104082)

摘　　要：舵机作为飞行控制系统重要执行机构,其作用是驱动舵面按照角度指令偏转。随着功率电传技术的快速发展,舵机系统要求具有更高的安全性、可靠性、动态特性和功率密度。该文设计了一种用于阀门调节的数字电动舵机控制器,以三相直流无刷电机作为核心执行机构,选用DSP+CPLD作为主控制单元和LVDT作为高精度位置传感器,采用电流闭环、角速度闭环和位置闭环三环控制策略实现数字化控制。实验结果表明,系统具有高性能动态响应和高精度的稳态指标。As the important executive body of flight control system,the servo aims to drive the control surface deflec- tion according to the position command. With the rapid development of the power telex technology,the servo system requires a higher level of security,reliability,dynamics and power density. This paper designed a digital electric servo controller for valve adjustment. Three-phase brushless DC motor （BLDCM）acts as the core executive body. The system selected DSP＋CPLD as the main control unit and the high-precision linear variable differential transformer（LVDT）as the position sensor. We achieve the digital control through the realization of three closed-loop control strategy includ- ing current loop ,speed loop and position loop. Experimental results show that the system has high dynamic response speed and great precision static performance.

关 键 词：数字舵机 动态响应 静态指标 线性位移传感器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]