全闭环经编送经系统PID控制算法设计

The PID control algorithm design of the fully-closed loop warp let-off system

针对先进经编机用电子送经系统精度高、响应速度快的要求,设计了一种全闭环控制的电子送经系统,它主要由控制单元、送经驱动装置、测速反馈装置和主轴信号装置4个部分组成。阐述了该全闭环送经系统的控制过程,并对其控制算法进行了研究。为了提高系统的快速响应性能,设计了修正PID(比例-积分-微分)控制算法,即当经编机正常运转时,则采用PID控制以提高系统的控制精度;而当开停车时,采用PD(比例-微分)控制以减少超调量,增强系统的快速响应能力。

In order to meet the requirements of high precision and rapid response of electronic warp let-off system of advanced warp knitting machines,this paper designs a fully-closed loop electronic warp let-off system consisted of control unit,let-off driving device,speed measurement feedback device and main shaft signal device,presents the control process and studies the control algorithm.In addition,in order to improve the rapid response property of the system,this paper modifies the PID(proportion-integration-differential) control algorithm so as to improve the control precision in normal running and increase the rapid response capability through reducing the control work.