摘要
完成了永磁同步电机电流检测系统设计,包括霍尔电流传感器、电流信号调理电路、采样电路及控制系统。推导了磁平衡式闭环霍尔电流传感器传递函数,分析了传感器参数对传感器响应时间的影响,设计了信号调理电路,采用同步采样方式进行电流采样,并给出了DSP/FPGA工作流程。最后设计了DSP/FPGA实验平台,进行电流环闭环实验,表明电流检测噪声较小。
Current detecting system of PMSM(Permanent Magnet Synchronous Motor)has been designed in this paper.The system is consist of closed-loop hall current sensor,signal processing circuit,AD sampling circuit and control system.The transfer function of closed-loop hall current sensor has been deduced.And the impact of sensor parameters on sensor response time has been analyzed.Current signal processing circuit has been designed.And the current is sampled in synchronous sampling mode as is shown in DSP/FPGA work flow.At the end of this paper,current loop control experiment is accomplished in the experimental platform.The current detecting noise is little.
作者
蒋明
邵文普
王华
JIANG Ming;SHAO Wen-pu;WANG Hua(China Academy of Engineering Physics,Mianyang 621900,)
出处
《机电工程技术》
2018年第4期29-31,共3页
Mechanical & Electrical Engineering Technology
