摘要
研制了一套基于S7-200电动机调速实验平台,通过编码器采集电动机转速,反馈给可编程控制器(PLC),PLC经过比较判断,输出模拟量,控制变频器,实现对电动机变频调速闭环控制;同时使用电位器,调节磁粉制动器输出,模拟负载的变化特性。通过触摸屏动态监控电动机转速和负载特性。实验装置预留各种接口,学生可以自主在该实验平台组网和上位机组态控制等实验。
An experimental platform for the motor speed regulation based on S7-200 is developed.Through the encoder to collect the motor speed for the feedback to the PLC,the comparative judgment is carried out by the PLC to make the output of the analog quantity,control the frequency converter and realize the closed-loop control of motor variable frequency speed regulation.At the same time,the potentiometer is used to regulate the output of the magnetic powder brake and simulate the changing characteristics of the load.The motor speed and the loading characteristics of magnetic powder brake are dynamically monitored and controlled by the touching screen. The experimental device is provided with various interfaces,and the students can independently carry out the experiments for the networking,the host computer configuration control,etc.,on this experimental platform.
出处
《实验技术与管理》
CAS
北大核心
2017年第9期85-89,共5页
Experimental Technology and Management
基金
陕西省科学研究发展计划项目(2016GY-064)
西安科技大学2016年度校级教育教学改革与研究项目(JG16029)
关键词
异步电动机
调速
实验台
PLC
变频器
编码器
asynchronous motor
speed regulation
experimental platform
PLC
frequency converter
encoder
