华南理工大学学报(自然科学版)
華南理工大學學報(自然科學版)
화남리공대학학보(자연과학판)
Journal of South China University of Technology (Natural Science Edition)
2015年
9期
8-13
,共6页
同步电动机%建模%输出误差算法%参数辨识%PI 控制器
同步電動機%建模%輸齣誤差算法%參數辨識%PI 控製器
동보전동궤%건모%수출오차산법%삼수변식%PI 공제기
synchronous motors%modeling%output-error algorithm%parameter identification%PI controller
为了得到永磁同步电动机更为精确的数学模型,采用机理建模和数值建模相结合的方式,提出了一种永磁同步电动机分数阶建模方法。首先根据电动机组成机理建立电动机的电磁环节和机械环节模型,分别对这两个环节进行建模实验,然后采用基于输出误差的数值拟合方法进行参数辨识,得到永磁同步电动机的分数阶模型,最后根据所得模型设计速度控制器并进行电动机速度跟踪仿真和实验。结果表明,电动机分数阶模型比整数阶模型能更准确地描述电动机的实际特性。
為瞭得到永磁同步電動機更為精確的數學模型,採用機理建模和數值建模相結閤的方式,提齣瞭一種永磁同步電動機分數階建模方法。首先根據電動機組成機理建立電動機的電磁環節和機械環節模型,分彆對這兩箇環節進行建模實驗,然後採用基于輸齣誤差的數值擬閤方法進行參數辨識,得到永磁同步電動機的分數階模型,最後根據所得模型設計速度控製器併進行電動機速度跟蹤倣真和實驗。結果錶明,電動機分數階模型比整數階模型能更準確地描述電動機的實際特性。
위료득도영자동보전동궤경위정학적수학모형,채용궤리건모화수치건모상결합적방식,제출료일충영자동보전동궤분수계건모방법。수선근거전동궤조성궤리건립전동궤적전자배절화궤계배절모형,분별대저량개배절진행건모실험,연후채용기우수출오차적수치의합방법진행삼수변식,득도영자동보전동궤적분수계모형,최후근거소득모형설계속도공제기병진행전동궤속도근종방진화실험。결과표명,전동궤분수계모형비정수계모형능경준학지묘술전동궤적실제특성。
In order to obtain a precise model of permanent magnet synchronous motor (PMSM),a fractional-order modeling approach of PMSMis proposed by combining the mechanism modeling and the numerical modeling.First, the model structures of electromagnetic part and mechanical part of PMSMare built on the basis of the composition mechanism of PMSM,and modeling experiments are conducted on the two parts.Then,the parameters of the two parts are identified by applying the output-error numerical fitting method,and the fractional-order model of PMSM is thus obtained.Finally,the speed controllers are designed on the basis of the obtained model,and the simulations and experiments of tracking the motor speed are performed.Simulation and experimental results show that the pro-posed fractional-order model can describe the nature of PMSM more precisely in comparison with the integer-order model.