CAJ | 학술논문

设计了一种基于松下系列PLC、变频器及组态软件实现对三相异步电机变频无级调速的控制系统,通过上位机组态界面输入框给定电机转速,加入旋转编码器作为电机转速反馈信号[1],使电机能够在给定转速下稳定运行;采用模糊控制调节方式控制PLC的输出脉冲,进而控制变频器的输出频率;通过PLC与上位机的连接,运用组态软件实现对电机运行状态的监控,并可通过控制按钮实时地控制电机的运行状态。实验结果显示,采用了模糊控制的监控曲线比采用PID调节的监控曲线有了明显的改善,测量值和变频器输出曲线已经没有明显的超调现象,且曲线趋于稳定的时间也明显缩短,可广泛应用于电机变频调速系统中。
설계료일충기우송하계렬PLC、변빈기급조태연건실현대삼상이보전궤변빈무급조속적공제계통,통과상위궤조태계면수입광급정전궤전속,가입선전편마기작위전궤전속반궤신호[1],사전궤능구재급정전속하은정운행;채용모호공제조절방식공제PLC적수출맥충,진이공제변빈기적수출빈솔;통과PLC여상위궤적련접,운용조태연건실현대전궤운행상태적감공,병가통과공제안뉴실시지공제전궤적운행상태。실험결과현시,채용료모호공제적감공곡선비채용PID조절적감공곡선유료명현적개선,측량치화변빈기수출곡선이경몰유명현적초조현상,차곡선추우은정적시간야명현축단,가엄범응용우전궤변빈조속계통중。
This control system was designed based on the PLC of the Panasonic series,inverter and configuration software to regulate the frequency speed of Three-phase asynchronous motor steplessly.The control system rotates motors with the input box of PC software,it takes Rotary Encoder as the feedback of speed of the motors,and the control system could make motors operate smoothly by the given speed.The Fuzzy-Control was adopted to control the output pulse of the PLC,and then,to control the output pulse of the inverter,with the connection of the PLC and the PC,it makes the supervision of the configuration software to the running state of the motors come true,and it even could control the running state of the motors at all times with the controlling button.The experimental results illustrate that,it was an obvious improvement to use the control curve of the Fuzzy-Control than to use the curve of the PID.It also shows that there isn＇t any clear overshoot of the measurements,and this shortens the time obviously of the curve tending to stability.This system can be widely used to the speed regulating system of the motors.