摘  要：设计的无刷直流电机锁相环数字稳速控制系统以单片机和可编程逻辑器件GAL芯片为核心，实现无刷直流电机的稳速控制。介绍了锁相环系统原理、硬件设计和系统的传递函数。经实验验证，控制系统结构简单、稳定可靠、转速平稳，可在短时间内快速起动并对转速进行跟踪，有实用意义。
关键词：稳速系统；无刷直流电动机；锁相环；单片机；实验

Abstract: A digital steady-speed control system based on phase-locked loop of brushless DC motor is designed in this paper.The core of the system is MCU and programmable logic device GAL,to realize the steady speed control of BLDCM .Simulation and expriments results show that the control system can achieve good performance of simple structure,high reliability,steady speed,quick start and speed tracking.
Key WordsSteady-speed control system；Brushless DC motor；Phase-locked loop；MCU；Experiment