摘要
针对中频加热弯管机在温度控制过程中温度波动范围大、推管速度与温度控制匹配度较低问题,本文对中频加热弯管机的加热系统和液压系统进行了详细分析,建立了系统的传递函数,采用双环控制器控制温度,并将变速积分PID控制技术引入中频加热弯管机的液压控制系统。实验结果表明,基于双环变速积分PID控制系统的具有较高的温度准确性和弯管的成型质量。
For the large range of temperature f luctuations and pushing tube speed and temperature control matching problems, the heating system and hydraulic in the intermediate frequency bender are analyzed, transfer function of heating system and hydraulic system are established. A double closed loop controller is developed and variable integral PID method is adopted in hydraulic system control strategy. The results show that base on a double closed loop and variable integral PID control method ensures accurately control to the temperature and high-level quality to the elbows.
出处
《科技资讯》
2018年第26期5-7,9,共4页
Science & Technology Information
基金
德阳中科先进制造创新育成专项资金(项目编号:YC-2016-QY12)
关键词
双闭环
变速积分PID
中频加热
弯管机
Double closed loop
Variable integral PID control
Medium-frequency heating
Pipe bender
