资源描述:
《基于损耗分析的高空电机效率模糊自适应优化控制》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第 45卷第 3期中南大学学报(自然科学版)Vol.45No.32014年 3月JournalofCentralSouth University(Scienceand Technology)Mar. 2014基于损耗分析的高空电机效率模糊自适应优化控制1,21雷金莉,窦满峰(1.西北工业大学自动化学院,陕西西安,710072;2.宝鸡文理学院电子电气工程系,陕西宝鸡,721007) 摘要:针对电池能量有限的高空驱动电机效率优化控制问题,提出一种结合电机损耗分析和模糊自适应算法的混合变步长在线搜索效率优化控制策略。在保证驱动电机控制系统动静态性能良好的前提下
2、,首先对高空驱动电机的损耗进行分析,以确定直流电流的搜索范围,然后采用模糊自适应算法在线变步长搜索直流电流,为减小效率寻优过程中转速和转矩的波动,模糊量化时引入转速和转矩因素。动静态仿真实验结果表明:驱动电机控制系统动静态性能良好,效率优化搜索时间约为0.02s,稳态效率提高8.4%。与直接搜索法相比,该控制策略寻优搜索时间短,转速、转矩波动小,鲁棒性好,实现高空驱动电机系统轻载稳态时高效率运行。关键词:高空驱动电机;效率优化;损耗分析;模糊控制;自适应控制中图分类号:TP391 文献标志码:A文章编号:1672−7207(2014)03−0742−06F
3、uzzyadaptive optimizationcontrol of highaltitudemotorefficiency based on lossanalysis1, 21LEI Jinli,DOUManfeng (1.SchoolofAutomation,NorthwesternPolytechnicalUniversity,Xi’an 710072,China;2.DepartmentofElectronics&ElectricEngineering,BaojiUniversityofArts&Science,Baoji721007,China
4、)Abstract:To solve theefficiencyoptimizationcontrolproblemofhighaltitudedrivemotorundertheconditionoffinite powersupply,a variable steponline search efficiencyoptimizationcontrolstrategywhich combinesmotorlossanalysis andfuzzyadaptive algorithmwas proposed.Underthepremiseofunchang
5、eablecontrolperformance when motorparametersandloaddisturbanceexist,drivemotorlosswasanalyzedtodeterminetheoptimalcurrentsearchrange.The optimalcurrentwassearchedonlineusingfuzzyadaptive algorithm,and speedandtorquefactors were joinedin fuzzy quantificationinordertoreduce thespeed
6、 andtorquefluctuations intheefficiencyoptimizationprocess.Simulation resultsshowthatdrive motorcontrolsystemhasgood staticanddynamicperformance,with optimization time being about0.02 s,and motorefficiencyincreasing by 8.4%.Comparedwith directsearch method,the proposed method has s
7、horteroptimization time,smallerspeed and torque fluctuations, and good robustness. Itkeeps high efficiencyatsteady and lowload.Keywords:highaltitude drive motor;efficiencyoptimization;lossanalysis;fuzzycontrol;adaptive control高空飞行器体积和载重受限,飞行器携带的电池体积小、效率高、控制性能好等优势,成为高空飞行能量有限,这就要求必须
8、极大限度地提高螺旋桨电驱器螺旋桨驱动电机的首选。永磁无刷直流电机额