基于Matlab无刷直流电机系统仿真建模的新方法  

A Novel Method for Modeling and Simulation of BLDC System Based on Matlab

作　　者：纪志成[1] 沈艳霞[1] 姜建国[1] 

机构地区：[1]中国矿业大学

出　　处：《系统仿真学报》2003年第12期1745-1749,1758,共6页Journal of System Simulation

摘　　要：在分析无刷直流电机(BLDC)数学模型的基础上,提出了无刷直流电机系统仿真建模的新方法。在Matlab/Simulink中,建立独立的功能模块,如BLDC本体模块、电流滞环控制模块、速度控制模块等,再进行功能模块的有机整合,搭建无刷直流电机系统的仿真模型。为保证仿真快速性和有效性,模型采用分段线性法生成梯形波反电动势,系统采用双闭环控制:速度环采用PI控制,电流环采用滞环电流控制。仿真结果证明了该方法的有效性,同时也适用于验证其他控制算法的合理性,为实际电机控制系统的设计和调试提供了新的思路。Based on the mathematical model of the Brushless DC motor (BLDC), a novel method for modeling and simulation of BLDC system in Matlab has been proposed. In Matlab/Simulink, the isolated functional blocks, such as BLDC block, Hysteresis current controller block, Speed controller block, ect., have been modeled. By the organic combination of these blocks, the model of BLDC can be established easily. To guarantee the validity and speediness in simulation, the back EMF is generated using piecewise linear curves. In the double loop of control system, a PI controller is adopted in the speed loop and a hysteresis current controller is adopted in the current loop. The reasonability and validity have been testified by the simulation results and this novel method offers a new thoughtway for designing and debugging actual motors.

关 键 词：无刷直流电机(BLDC) 仿真建模 MATLAB 分段线性法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]