摘要
针对温度对象有非线性、大时滞、强耦合等特点,将模糊控制与PID控制结合起来,设计了一种模糊PID控制器。此控制器基于误差的变化特点,对比例和微分系数及时调节。调整的方法是:当偏差较大时,调大比例系数,增快系统的响应速度;当偏差较小时,而偏差微分较大时,调小比例系数,提高控制精度。通过在铝挤压实验平台测试表明,模糊PID算法比常规PID算法具有上升时间短、响应速度快、控制精度高等特点,模糊PID算法对温度控制系统有良好的控制性能。
Aiming at the non-linearity,large hysteresis and strong coupling of temperature system,this paper designed the fuzzy PID controller,which combining fuzzy control with PID control.According to the change of the system deviation and bias,the controller real-time adjustment of the scale factor and the differential coefficient.The adjustment method is:1)when the deviation is large,increase the scale factor,and improve the response speed of the system;2)when the deviation is small,but large deviation differential,transfer a small scale factor,and improve control accuracy.Test results of aluminum extrusion experiment platform show that the fuzzy PID algorithm has the characteristics of short rise time,fast response and high control precision,which compared with the conventional PID algorithm.Fuzzy PID algorithm has good control performance for temperature control system.
作者
蒋思中
Jiang Sizhong(Guangxi Vocational & Technical College,Nanning Guangxi 530226,China)
出处
《科技通报》
北大核心
2017年第10期121-124,共4页
Bulletin of Science and Technology
基金
2014年度广西高校科学技术研究项目(项目编号:YB2014487)
关键词
铝棒
温度控制
模糊PID控制器
铝挤压实验平台
aluminum bar
temperature control
fuzzy PID controller
aluminum extrusion experiment platform
