电磁选针器选针刀头摆动驱动力矩的测量

Measurement of the swing driving torque of the electro-magnetic selector

电磁选针器选针刀头摆动驱动力矩是决定选针频率和选针稳定性的重要因素。为了满足高速针织设备高频率选针的要求,需要通过驱动力矩的测量和分析对高性能选针器进行优化设计。设计了一种基于STM32嵌入式微处理器的电磁选针器选针刀头摆动驱动力矩的测量系统。针对数量级在1~30g的微小力测量,设计了高精度的信号处理电路和数值处理方法,以准确测量选针刀头在摆动过程中各位置的驱动力矩。通过人机交互方式实现测量,将所测得数据以文本的形式保存至SD卡中,用于后期驱动力矩与选针位置关系的研究。

The swing driving torque of the electro-magnetic selector is an essential factor for the frequency and the stability of needle selection.In order to meet the requirement of the high-frequency needle selection of the high-speed knitting equipment,it is necessary to carry out optimal design of highperformance needle selector by measuring and analyzing the driving torque.The paper designs a measurement system of the driving torque of the electro-magnetic selector,which is based on the STM32 embedded microprocessor.For 1~30 g tiny force measurement,the paper designs a high-precision signal processing circuit and numerical method to accurately measure the driving torque of the head of needle selector in each position of swing.By means of human-computer interaction,the driving torque can be conveniently measured,and the measured data can be saved to the SD card in the form of text for researching the relation between the driving torque and the position of the needle selection.