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; 文章编号:1672-7207(2011)S1-0949-04 Fuzzy variable structure and direct torque controller for IPM permanent magnet synchronous motors used in electrical vehicle CHE Guo-lin1, 2, ZHANG Yun-sheng2 (1... and direct torque control strategy was designed to interior permanent magnet (IPM ) synchronous motor which fits the electrical vehicle driving. This method overcomes the existence of conventional......
core loss and copper loss to reduce the operation efficiency in the direct torque control system of interior permanent magnet synchronous motor (IPMSM-DTC) for urban rail traction, efficiency... performances of the system are improved. Key words: urban rail transit; interior permanent magnet synchronous motor; efficiency-optimization; switching frequency optimization control 对已通车运营的城轨线路初步统计,城轨交通每天每公里的......
-hua(季首华), JIN Jun-ze(金俊泽), CHANG Yu-bao(常玉宝) (Research Center of Foundry Engineering, Dalian University of Technology, Dalian 116024, China) Abstract: The influence of permanent-magnet-driven... electrochemical polarization. The results show that the permanent-magnet stirring refines the microstructure of AZ61 magnesium alloy, which improves the precipitation amount and distribution uniformity of β......
for High Temperature Materials and Tests, Ministry of Education, Shanghai Jiaotong University, Shanghai 200030, China ) Abstract: The microstructure of an explosively compacted Nd-Fe-B permanent magnet... of phases. Figs.2-5 show the microstructures and the selected area diffraction(SAD) patterns of the explosively compacted Nd-Fe-B permanent magnet. The composition analysis corresponding to the large......
Fe-Mn-Ti合金的磁硬机理 刘荣运1,马如璋2,吕键3 (1.重庆特殊钢公司特钢研究所 重庆 400032;2.北京科技大学材料物理系 北京 100083;3.首钢总公司冶金研究所 北京 100085) 摘要:Fe-Mn-Ti合金在冷加工后于540℃左右高温回火可以得到较高的磁矫顽力.本研究用退磁曲线测量；磁转矩法测定磁织构随回火温度的变化；在100℃~600℃之间回火时测定高温矫顽力随时间的变化,并分加外磁场和不加外磁场两种情况,分析磁退火效应.从多样性试验结果出发,分析讨论后得到Fe-Mn-Ti合金的高矫顽力的产生可能主要是单畴机理. 关键词:Fe-Mn-Ti合金; 半硬磁材料; 磁硬化机理; 单畴机理; Fe-Mn-Ti alloy; semihard permanent magnet materials; mechanism of magnetic hardening......
永磁同步电动机反演滑模控制系统的研究 王峰1,李渊1,何凤有1 (1.中国矿业大学信电学院,江苏,徐州,221008;2.江苏大学电气信息工程学院,江苏,镇江,212013) 摘要:文章提出了基于反演和滑模变结构控制理论的永磁同步电动机的控制策略,对所提出的控制策略进行了理论分析,并且在Matlab环境下进行了仿真实验.仿真结果表明,该控制策略有效地实现了电动机的转速跟踪控制,具有良好的动,静态性能和鲁棒性能. 关键词:永磁同步电动机; 反演控制; 滑模控制; 鲁棒性; PMSM; permanent magnet synchronous motor; backstepping control; sliding-mode control; robust; PMSM; [全文内容正在添加中] ......
with adaptive fuzzy terminal sliding mode for permanent magnet synchronous motor FANG Yiming1, 2, YU Xiao1, NIU Ben1, LIU Le1 (1. Key Laboratory of Industrial Computer Control Engineering of Hebei... is effectively attenuated, and the system has strong robustness for the load disturbance. Key words: permanent magnet synchronous motor; speed control; terminal sliding mode; reaching law; adaptive fuzzy 永磁同步......
, Korea Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: This work proposes a new strategy to improve the rotor position estimation of a permanent magnet synchronous... magnet synchronous motor; sliding mode observer; adaptive observer gain; cascade low-pass filter; variable cut-off frequency; variable phase delay compensation 1 Introduction A permanent magnet......
materials. An improving strategy of the magnetic force for the AZ31 magnesium alloy installed with a permanent magnet was proposed and experimental verification was carried out. For the proposed... force improvement; nonferrous material; permanent magnet; process parameter ......
半硬磁性FeCrCo合金的热处理工艺及其对性能的影响 李文军1,凌铨1 (1.宁波盛事达磁业有限公司,浙江宁波,315470) 摘要:用传统的铁铬钴制造方法结合固溶,磁场热处理,时效工艺制备了半硬磁性铁铬钴合金.分析了热处理工艺对合金磁性能的影响.结果表明,热处理的温度和时间对合金磁性能有显著影响.通过改变铁铬钴永磁合金的热处理工艺,可得到不同性能的半硬磁类合金,以满足不同的应用需求.在此基础上总结了工艺控制要点.最后指出,采用合适的设备及工艺控制方法,可以控制半硬磁合金的矫顽力偏差在4kA/m以内. 关键词:铁铬钴永磁合金; 半硬磁特性; 热处理; 设备; 工艺控制; FeCrCo permanent magnet alloy; semi-hard magnetic mharacteristic; heat-treatment; equipment; technology......
