基于STM32的新型动态旋流器电气系统设计

Design of a New Dynamic Hydrocyclone Electrical System Based on STM32

针对当前常规动态旋流器控制精度低,分流效果差等问题,设计了一种基于STM32的新型动态旋流器控制系统,分别对其硬件及软件进行设计与实现。该系统以直流无刷电机(BLCD)作为动力源,采用六步换向的方波驱动策略,以PWM技术调制电机转速,通过PID控制器实现对目标旋流速度快速、准确、稳定地闭环跟踪,并提供可视化的PID参数整定界面,极大缩减了操作者获得最优控制品质的时间。为验证该控制系统的可行性,分别设置了电气系统速度闭环测试实验和油水分离实验,通过数值模拟方法分析了电气系统参数和操作参数对油水分离效率的影响。实验结果表明,该系统可实现对目标转速的精确控制,且随着叶轮转速提高,装置分离效率呈现先增大后减小的趋势,当转速在842 r/min时,对4种不同比重的油水混合液的分离效率均达到最高,为85.9%。

Aiming at the problems of low control precision and poor diverting effect of the current conventional dynamic hydrocyclone,a new dynamic hydrocyclone control system based on STM32 is designed,and its hardware and software are designed and implemented respectively.The system uses the brushless DC motor(BLCD)as the power source,adopts the six-step reversing square wave driving strategy,modulates the motor speed with PWM technology,realizes the fast,accurate and stable closed-loop tracking of the target swirl speed through the PID controller,and provides the visual PID parameter setting interface,which greatly reduces the time for the operator to obtain the optimal control quality.The experimental results show that the system can achieve accurate control of the target speed,and with the increase of the impeller speed,the separation efficiency of the device increases first and then decreases.When the speed is 842 r/min,the separation efficiency of the four kinds of oil-water mixture with different specific gravity reaches the highest,85.9%.