基于STM32的全自动贴片机控制系统设计与实现

Design of Automatic Mounter Control System Based on STM32

摘要:

针对贴片机控制系统对贴装速度、位置精度的严格要求,设计了一种基于STM32微处理器的贴片机运动控制系统。针对贴片机控制系统在快速启停过程中因抖动等干扰影响位置跟踪精度的问题,在X轴和Y轴步进电机控制中设计了基于自抗扰控的(ADRC)闭环控制器,其线性扩张状态观测器(LESO)对系统的内外干扰进行实时估计,并通过线性误差补偿控制律进行扰动补偿,从而提高了单轴位置跟踪精度。设计了上位机系统管理软件,通过串口通信将PCB版图文件中元器件坐标、数量等数据下发到下位机控制系统。实际应用中,该控制系统运行稳定,抗干扰性能良好,控制精度高,具有一定的实际应用价值。

Abstract:

According to the requirements for speed and position accuracy of the placement machine control system, a placement machine control system based on STM32 microprocessor motion was designed. A closed-loop control based on auto-disturbance suppression controller (ADRC) is designed to solve the problem of position tracking accuracy due to interference such as jitter during the fast start-stop process of the placement machine control system in the motor control. The linear extended state observer (LESO) estimates the internal and external disturbances of the system in real time, and compensates the disturbance by the linear error compensation control law, thereby improving the single-axis position tracking accuracy. The upper computer system management software is designed to storage the files of the PCB, and send data to the lower computer control system through serial communication. In practical applications, the control system is stable in operation, good in anti-interference performance, high in control precision, and has certain practical application value.