基于PLC和变频器控制电机转速的设计与分析  

Design and analysis of motor speed control based on PLC and frequency converter

作　　者：刘迪 王成刚 王晶 王昉 LIU Di;WANG Chenggang;WANG Jing;WANG Fang(School of Basic Science for Aviation,Naval Aeronautical University,Yantai 264001,China)

机构地区：[1]海军航空大学航空基础学院,山东烟台264001

出　　处：《电子设计工程》2022年第14期165-169,共5页Electronic Design Engineering

基　　金：国家自然科学基金(51377168)。

摘　　要：电机是一种非常重要的机械装置,在工农业生产、军事装备、航空航天等领域应用非常广泛。在工业生产中,对电机转速的测量很重要,要对电机进行保护,防止发生事故。因此,要实时监测电机的转速以保证电机的正常运行。该设计将PLC与变频调速技术相结合,利用数字PID控制方法来实现对电机转速的控制,通过光电编码器对转速进行测量。通过实验选择合适的比例、积分、微分系数,可以得到比较满意的控制效果。当速度达到1000 r/min以上时,相对误差比较小,在1%以内,基本上满足调速的指标,达到了预期的效果。The motor is a very important mechanical device,in industrial and agricultural production,military equipment,aerospace and other fields,the application of the motor is very wide.It is very important to measure the speed of the motor in industrial production.It is necessary to protect the motor and prevent accidents.Therefore,the speed of the motor should be monitored in real time to ensure the normal operation of the motor.The design combines PLC and frequency conversion speed regulation technology,uses the digital PID control method to control the motor speed,and measures the speed through the photoelectric encoder.By selecting appropriate proportional,integral and differential coefficients,a satisfactory control effect can be obtained.When the speed reaches more than 1000 r/min,the relative error is relatively small,within 1%,which basically meets the speed regulation index and achieves the desired effect.

关 键 词：变频调速 PID控制算法 电机转速 抗干扰 脉冲信号 

分 类 号：TN274[电子电信—物理电子学]