基于MLX91205电流传感器的电机驱动系统

摘要

In order to reduce the cost of motor controller and improve control performance,MLX91205 was used to detect the phase current of motor.TMS320F2808 was used as processor of control system,and circuit sensor output signal converted by a high-precision conversion circuit can be detected by processor.Motor vector control strategy and motor driving circuit were designed ai-ming at the motor parameters and performance indicators.Experimental results show that motor stator current follows the given cur-rent accurately and the precision of current sampling is high,and it is worth application in motion control system.%为了降低电机控制器的成本，减小质量以及提高电机的控制性能，采用霍尔传感器MLX91205对电机的相电流进行检测，采用TMS320F2808作为控制系统的处理器，设计一种高精度转换电路将传感器输出的电信号送入处理器，针对电机的参数与性能指标，设计了电机的驱动电路和矢量控制策略。实验结果表明：电机的定子电流能够精确地跟随给定电流，而且电流采样精度高，适合在运动控制系统中应用。