基于FPGA的FPMSM滑模观测器无传感器控制

针对五相永磁同步电动机在无传感器控制领域研究较少的情况,在分析了其数学模型基础上,利用饱和函数作为切换函数,引入角度补偿单元,提出了一种抖振现象低、跟踪性能良好的滑模观测器位置估算方法。结合FPGA开发工具System Generator完成滑模观测器模块的建模和实现,并将模块生成的Verilog HDL代码下载到FPGA实验平台上。仿真和实验结果表明了利用滑模观测器进行五相永磁同步电动机位置估算的可行性。

A Sliding Model Observer for Sensorless Control of FPMSM Based on FPGA

In order to meet the situation of studying less on the sensorless control of a five-phase permanent magnet synchronous motor(FPMSM),based on analysis of the mathematical model of FPMSM,by using a saturation function instead of the sign function,joining the the phase-angle compensating module,the way of estimating position by a sliding mode obserber(SMO) with the characteristic of a faint chattering problem and a excellent tracking performance was proposed.The model of SMO was built and implemented based on the advanced system-level FPGA development tools System Generator(SG),and the Verilog HDL code which this module generated was downloaded to FPGA platform.Simulation and experiment results show the feasibility of estimating position by the sliding model observer for FPMSM.