基于STM8S903K3的直流无刷电机电流控制

Control of DC Brushless Motor Current via STM8S903K3

以小型直流无刷电机为被控对象、STM8S903K3为控制芯片,应用芯片内部模数转换器,采用PWM半波中断匹配电流采集,实现电机电流PI控制。搭建总体硬件结构,利用意法半导体ST公司的Cosmic和STVD、STVP进行程序编写,完成直流无刷电机电流控制器的程序设计。然后利用PWM半波中断匹配电流采集的方式,采集到转速反馈系统中反馈的信息。采用simulink进行仿真验证无刷直流电机有位置传感器仿真验证。最后设计了基于RS232的通信协议,保证上位机与调速系统通信的有效性、稳定性,更好地实现对调速系统运行状态的实时监测,最后设计实验成功地验证系统的运行。

With small DC brushless motor as the controlled object and STM8S903K3 as the control chip,the chip's internal analog-to-digital converter is used,and PWM half-wave interrupt matching current collection is used to realize motor current PI control.Set up the overall hardware structure,use Cosmic,STVD,STVP of STMicroelectronics to write the program,and complete the program design of the DC brushless motor current controller.Then test the PWM half-wave interrupt matching current acquisition to reach the feedback information from the speed control of the brushless motor.Simulink is used for simulation and verification.The brushless DC motor has position sensor simulation and verification.Finally,in accordance with the basic protocol based on RS232,the effectiveness and stability of communication between the host computer and the speed control system are ensured,and the real-time monitoring of the operation status of the speed control system is better achieved.Finally,training is performed and the system operation is successfully verified.