基于PID参数的经编机电子横移系统优化

Optimization of warp knitting machine electronic shogging system based on PID parameters

为准确把握PID参数对经编机电子横移系统的影响以及优化系统性能。分析了在速度控制模式下电子横移伺服控制系统的控制结构。依据各个环路的作用，对电子横移伺服控制系统中的电流环、速度环、位置环的PID控制方式进行选择。并以速度调节器中的P参数为例，在HKS4型高速经编机上进行试验，分析不同速度比例增益对系统的影响。结果表明，增大速度比例增益可加快系统动态响应，有利于机速的提高。最后，通过细化试验参数区间，找到速度比例增益临界值，提高了最高机速，优化了现有电子横移系统的动态响应性。

To grasp the influence of PID parameters on warp knitting machine, and to optimize the system performance, the control structure of the electronic shogging system under speed control mode is analyzed. The PID control mode of the current loop, speed loop, position loop in the electronic shogging system is selected according to the role of each loop. Moreover, the P parameter in speed controller is taken as an example, some tests are carried out on the HKS4 high speed warp knitting machine to analyze the influence of different speed proportional gain on the system. It turns out that increasing the proportional gain is beneficial to the system dynamic response of the electronic shogging system and finally improves machine speed. At last, by refining the test parameter interval, finding a speed proportional gain threshold can increase the maximum speed and optimize the dynamic response of existing electronic shogging system.