摘要
为克服纯积分器的积分初值、误差累积以及直流偏移等缺陷,提出了基于全维状态观测器的永磁同步电机定子磁链观测方法。以定子磁链作为状态向量构造系统状态方程,以电流作为输出向量构造系统输出方程,配置观测器极点正比于电机模型极点,并采用Matlab中的鲁棒极点配置算法进行观测器反馈增益阵的计算。实验表明,采用全维状态观测器对定子磁链观测的准确度更高,所构成的直接转矩控制系统具有更好的性能。
In order to avoid the defects such as initial value,accumulation of errors and dc drift,the full order state observer for observing of flux linkage of permanent magnet synchronous motor is advanced.The state equation which uses stator flux linkage as state vector and output equation which uses current as output vector were designed.The poles were placed at position which was proportional to the poles of motor and the feedback gain matrix was designed by robust pole assignment arithmetic in Matlab.At last,the experiment show that the accuracy of full order state observer for stator flux linkage and the performance of direct torque control system based on it are better than that of pure integrator and corresponding system.
出处
《电力电子技术》
CSCD
北大核心
2007年第11期29-30,33,共3页
Power Electronics
关键词
永磁电机
转矩控制/全维状态观测器
极点配置
permanent magnet motor
torque control / full order state observer
pole assignment
作者简介
郎宝华（1972-），男，辽宁抚顺人，博士研究生，研究方向为电力电子与电力传动，高精度运动控制系统。
