基于DSP和ML4428无刷直流陀螺电机锁相稳速控制的研究

Phase-locked Loop Steady Speed Control of BLDCM in Gyro Based on DSP and ML4428

提出了一种新的基于数字信号处理器(DSP)TMS320LF2407A和专用驱动芯片ML4428的陀螺用无位置传感器无刷永磁直流电机(BLDCM)稳速控制系统。它采用芯片ML4428实现无刷直流电机速度控制系统中的反电势检测﹑换相和功率驱动,并使用数字信号处理器TMS320LF2407A作为控制处理器,实现了电机的起停控制﹑﹑速﹑﹑﹑﹑速检测。它还采用了锁相环技术和积分分离的PID控制算法,大大提高了系统的控制性能和可靠性。

A phase-locked loop steady-speed control system is presented, in which the Brushless Permanent Magnet DC motors（BLDCM） are based on DSP and ML4428. The counter electromotive force detection and back-EMF commutation are realized by the chip ML4428. The starting and stopping of motor and the supply and detection of the speed are realized based on TMS320LF2407A. The PLL technology and the integral control algorithm are applied, so the control function and the reliability of the system are greatly increased.