直进式拉丝机的主要功能 Main functions of direct-input wire drawing machine

直进拉丝机厂家根据操作工在面板设定决定作业的速度，该速度的模拟信号进入PLC，PLC考虑加减速度的时间之后按照一定的斜率输出该模拟信号。这样做的目的主要是满足点动、穿丝等一些作业的需要。PLC输出的模拟电压信号同时接到所有变频器的AI2（AI1也可以）输入端，作为速度的主给定信号。各摆臂位移传感器的信号接入到对应的转鼓驱动变频器作为PID控制的反馈信号。根据摆臂在中间的位置，自己设定一个PID的给定值。这个系统是非常典型的带前馈的PID控制系统，一级串一级，PID作为微调量。

The direct-inlet wire drawing machine manufacturer determines the speed of the operation according to the operator setting on the panel. The analog signal of the speed enters the PLC. After considering the acceleration and decreasing time, the PLC outputs the analog signal at a certain slope. The purpose of this is mainly to meet the needs of some operations such as jogging and threading. The analog voltage signal output by the PLC is connected to the AI2 (AI1 can also be) input of all inverters as the main given signal of the speed. The signals of each swing arm displacement sensor are connected to the corresponding drum drive inverter as a feedback signal for PID control. Set a PID value by yourself according to the position of the swing arm in the middle. This system is a very typical PID control system with feed forward, with one level in series and one level in fine-tuning amount.