无位置传感器无刷直流电机数字控制系统

Control System Based on Digital Control for BLDC Motor Without Position Sensor

介绍了一种基于DSP+CPLD的全数字方式的无位置传感器无刷直流电动机控制系统,采用速度和电流双闭环对无刷电机进行控制,运用高度集成化的芯片6AM15作为电机的驱动电路,同时选用电机专用芯片ST7MC进行反电势过零检测。此系统极大程度上简化了硬件结构,调试简单,降低了成本,提高了电机的动态性能和可靠性。

The eontrol system for BLDC motor without position sensor based on whole-integrated digital style in DSP＋CPLD is introduced by this paper. The paper adopted speed and current doubleclosed loop control mode, and used highly-integrated chip 6AM15 as the motor＇s drive circuit, meanwhile, selecting the special motor chip ST7MC to have a BBMF zero-crossing detection. The system could easily simplify the hardware structure, having a convenient debugging, reducing the cost,also strengthening the dynamic characteristics and reliability of the motor.