基于线性自抗扰控制的放卷张力控制系统
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摘要
由于连续轧染机放卷系统具有时变性、非线性和耦合性等特点,常规PID控制效果不良。针对恒张力控制问题,结合自抗扰控制方法提出一种放卷张力控制的方法。根据放卷运行机理,对放卷过程进行数学建模,推导静、动态解耦模型,设计线性自抗扰控制器(LADRC)。对该控制器与常规PID控制进行对比仿真实验,结果表明:该控制器能够使织物的张力在放卷过程中保持恒定,提高系统的稳定性和抗干扰性。
Since continuous rolling machine unwinding system has the characteristics of timevarying,non-linearity and coupling,the conventional PID control effect is bad.Aiming at the problem of constant tension control of this system,a method of unwinding tension control was proposed by combining auto-disturbance rejection control method.According to the mechanism of unwinding operation,the mathematical model of the unwinding process was simulated,and the static and dynamic decoupling models were deduced.Besides,the linear auto-disturbance-rejection controller (LADRC) was designed.The simulation experiment was carried out by comparing the controller with the conventional PID control.Experiments showed that the controller could make the fabric tension maintain constant in the unwinding process,and improved the stability and anti-jamming of the system.
Since continuous rolling machine unwinding system has the characteristics of timevarying,non-linearity and coupling,the conventional PID control effect is bad.Aiming at the problem of constant tension control of this system,a method of unwinding tension control was proposed by combining auto-disturbance rejection control method.According to the mechanism of unwinding operation,the mathematical model of the unwinding process was simulated,and the static and dynamic decoupling models were deduced.Besides,the linear auto-disturbance-rejection controller (LADRC) was designed.The simulation experiment was carried out by comparing the controller with the conventional PID control.Experiments showed that the controller could make the fabric tension maintain constant in the unwinding process,and improved the stability and anti-jamming of the system.
引文
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[2]郑永忠.小浴比溢喷染色机的低张力控制[J].纺织导报,2013(11):67-68.
[3]李革,贾元武,张建新,等.基于模糊神经网络的PID张力控制系统[J].纺织学报,2008,29(6):109-112.
[4]李坤全,文睿.瓦楞纸板生产线原纸张李自适应模糊PID控制[J].包装工程,2017,38(7):135-138.
[5]张永胜,高宏力,刘庆杰,等.基于模糊控制理论的同步带恒张力控制系统[J].包装机械设计与制造,2012(6):15-17.
[6]陈增强,孙明玮,杨瑞光.线性自抗扰控制器的稳定性研究[J].自动化学报,2013,39(5):574-580.
[7]彭艳,刘梅,罗均,等.无人旋翼机线性自抗扰航向控制[J].仪器仪表学报,2013,34(8):1894-1899.
[8]李健,梅雪松,陶涛,等.放卷张力系统鲁棒控制器的设计[J].西安交通大学学报,2012,46(1):86-90.
[9]徐晶,李健,丁颂,等.基于自抗扰控制的放卷系统张力控制器设计[J].包装工程,2016,37(15):150-155.
[10]HAN J Q.From PID to active disturbance rejection control[J].IEEE Transactions on Industrial Electronics,2009,56(3):900-906.
[11]ZHENG Q,CHEN Z,GAO Z Q.A practical approach to disturbance decoupling control[J].Control Engineering Practice,2009,17(9):1016-1025.
[12]马永光,冉宁,赵朋,等.基于S函数在自抗扰控制器在Simulink仿真中的应用[J].仪器仪表用户,2012,19(4):78-80.