基于DSP的工业缝纫机数控改造

Numerical transform of industrial sewing machine based on DSP

根据工业缝纫机机械传动部分的自动化程度低、响应速度慢、传动机构间的齿轮精度和同步性差、机械总轴容易出现机械谐振和噪声大等缺点,本文将用3台电机独立控制工业平缝机的3个运动单元,将其拆分为独立单元。其中单台电机控制系统以DSP为控制芯片和相关外围电路构成三闭环直流调速系统(转速环、电流环、位置环)。实验表明该电机控制系统能够取得良好的动态性能和较宽的调速范围,转速误差在2%以内,同时系统结构简单,运行可靠,具有较高的使用价值。

According to the degree of automation of mechanical drive industrial sewing machine parts of the low,slow response speed,transmission mechanism between the gear accuracy and weak synchronization,mechanical shaft is easy to appear the mechanical resonance,noise and so on,this article will use the 3motor independent control of three motor units,industrial sewing machine.The motor control system with single takes DSP as the control chip and related peripheral circuit composed of three closed loop DC speed control system（speed loop,current loop,position loop）.Experimental results show that the motor control system can achieve good dynamic performance and wide speed range,and the system has the advantages of simple structure,speed error within 2%,reliable operation,and has high use value.