基于DSP-FPGA的永磁电机数字控制系统设计∗

摘要

This paper presents the design of digital control system of permanent magnet motor based on DSP-FPGA and permanent magnet motor FOC principles. It completes the overall structure and the design of cor-responding hardware and software of digital control system. In order to improve the dynamic performance of the control system, This paper uses resolver decoding algorithm based on CORDIC to obtain angle cosine and sine value and speed information, And uses high-speed synchronous serial communication SPI between DSP and FPGA. Basis on the of the overall design and analysis, simulation by computer software and control experimental on actual permanent magnet motor results shows that the digital control system has a simple de-signed structure, better dynamic and static performance. Therefore,this control system has good prospect in practical applications.%以交流永磁电机矢量控制原理为基础，介绍了一种基于DSP-FPGA的永磁电机数字控制系统的设计，完成了数字控制系统的总体架构及相应的硬件、软件设计，同时为了提高控制系统的动态性能，采用了基于CORDIC变换的旋转变压器解码算法得到转角正余弦函数值与转速信息，且DSP与FPGA之间采用高速同步串行通信SPI来实现。在对总体设计分析的基础上，通过计算机软件仿真和对实际永磁电机的控制实验结果表明，所设计的数字控制系统具有结构简单、较好的动静态特性与快速性能，在实际应用中具有较好的应用前景。