经纱张力速度分散控制

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...

Study on tension and velocity decentralized control of let-off system with servo control

To solve the change of Web diameter resulting in the warp tension and velocity becoming more complicated, time-varying and non-linear, which has a severe influence on performance of let-off system controller, such as stability, accuracy and dynamic performance, this paper presents a warp tension and velocity decentralized control with servo controller as actuator. First, an accurate dynamic model is developed for the let-off system; Second, the let-off system is decoupled into the constant tension control and the velocity control; Finally, a strategy for computing reference velocity of let-off is presented, which integrated with feed-forward control, PID control, being composed of the constant tension controller. An experimental analysis between general decentralized PI controller and proposed decentralized controller show that proposed decentralized controller is capability of suppressing the disturbance more effectively and has better accuracy, faster response, more robust and wide range of applications broader.