经纱张力速度分散控制  

Tension and velocity decentralized control of let-off system

作　　者：彭志辉[1] 马光[1] 周晨[1] 

机构地区：[1]温州大学机电工程学院,浙江温州325035

出　　处：《纺织学报》2011年第10期127-133,共7页Journal of Textile Research

基　　金：浙江省教育厅资助项目(Y200803160);温州市科技局资助项目(G20090035)

摘　　要：针对经纱卷绕过程中半径变化导致张力和速度时变和非线性扰动等特性,以及对控制系统稳定性、精度和动态性能产生的严重影响,提出一种经纱张力速度分散控制策略。首先,建立送经辊精确数学模型。然后,将张力调节解耦为张力速度协调控制,再给出送经辊参考速度算法,并且与前馈补偿算法、PID控制算法有机结合,构成了送经辊张力控制系统。以经纱张力为控制对象,对传统分散PI控制方法和所提出的控制方法进行对比实验。结果表明,所提出的控制策略能有效地抑制卷绕直径变化对张力的影响,且具有精度高、响应速度快、鲁棒性强和适应范围广等优点。The change of warp package diameter during let-off results in the warp tension and velocity time-varying and non-linear turbulence that have a severe influence on the performance of let-off system control system,such as stability,accuracy and dynamic performance.Therefore,this paper presents a warp tension and velocity decentralized control with a servo controller as an actuator.Firstly,an accurate dynamic model is developed for the let-off system.Then,the let-off system is decoupled into the constant tension control and the velocity control,and finally,a strategy for computing the reference velocity of let-off is presented,in combination with feed-forward control and PID control,makes up the constant tension control system of the warp package.Comparison between the general decentralized PI control and proposed decentralized control shows that the proposed decentralized control is capable of suppressing the disturbance more effectively and has better accuracy,faster response,more robust and wide range of applications.

关 键 词：经纱张力 控制策略 速度调节 PID控制 

分 类 号：TS103.7[轻工技术与工程—纺织工程]