基于51单片机多通道直流电机调速设计觹  

Design of Regulating Speed System of Multi-channel DC Motor Based on 51 Single-Chip Microcomputer

作　　者：李素娟[1] 蒋维安[1] 

机构地区：[1]中国民航飞行学院飞行技术学院,四川广汉618307

出　　处：《机电工程技术》2010年第6期30-32,129,共4页Mechanical & Electrical Engineering Technology

基　　金：国家自然科学基金项目(编号:F02/60572179)

摘　　要：介绍了一种以AT89C55为核心的多通道直流电机PWM调速系统,可同时实现六路微型电机的独立控制。应用积分分离PID控制算法,得出新的控制量,从而改变占空比,实现了PWM调速,并用光电编码器实现速度闭环控制。由于AT89C55单片机I/O接口数量的限制,采用ULN2803可同时驱动六路微型电机,单片机与PC机串口通信可控制六路电机。Matlab仿真结果表明系统满足精度高、响应快的要求。A kind of DC motor PWM speed regulation system taking AT89C55 as the core of the control which can realize the independent control of six channel mini-motor is introduced.The system adopts separated Integral PID algorithm,gets a new control date and the duty cycle is changed,so speed can be adjusted.With the photoelectrical encoder,the speed closed-loop control can be realized.Due to the limit of the number of I/O of AT89C55,the system can only drive six channel mini-motor using ULN2803,The six channels DC motor can be controlled through serial communication between MCU and PC.The results of Matlab simulation demonstrated the system could satisfy the demand of the high precision and fast response.

关 键 词：AT89C55 PWM 多通道 光电编码器 

分 类 号：TM331.3[电气工程—电机]