基于 KV31 的无刷直流电机控制系统设计

为提高港口机电设备的能源利用率,提出以无刷直流电机作为驱动机构,替代目前广泛使用的三相异步电机。控制系统作为无刷直流电机的重要组成部分,对于电机性能表现至关重要。系统以 NXP的 KV31 微控制器作为控制核心,按照模块化思想,对无刷直流电机的软硬件进行设计,其中包括核心控制电路、功率驱动电路和转子位置信号检测电路等;根据港口机械中的电机存在的实际工况,设计阶跃负载实验等多组实验进行测试。实验结果表明,所设计的无刷直流电机控制系统运行稳定可靠,能够满足性能要求。

Design of Brushless DC Motor Control System Based on KV31

In order to improve the energy utilization rate of port electromechanical equipment , a brushless Direct Current motor is proposed to replace the three-phase asynchronous motor which is widely used at present.As an important part of brushless Direct Current motor , the control system is very important for the performance of the motor.The system uses NXP KV31 microcontroller as the control core.According to the modular idea , the hardware and software of the brushless Direct Current motor are designed , including the core control circuit , power drive circuit , rotor position signal detection circuit and so on.According to the actual working conditions of the motor in the port machinery , several groups of experiments such as step load experiment are designed for testing.The experimental results show that the designs brushless Direct Current motor control system runs stably and reliably , and the system can meet the performance requirements.