韶山7E电力机车交流变频电动机的技术特点     

陶若冰 《西安铁路职业技术学院学报》2007,(1):22-24

交流变频电动机是电力机车的一种新装置，本文主要介绍了韶山7E电力机车交流变频电动机的技术特点。  相似文献   

“Can I play too?” Adapting common classroom activities for young children with limited motor abilities     

Kristyn Sheldon 《Early Childhood Education Journal》1996,24(2):115-120

This paper offers suggestions on adapting common classroom activities found in early childhood classrooms to increase participation of young children with limited motor abilities. It stresses the importance of de-emphasizing differences among children and highlighting that all children, even those with severe disabilities, can benefit from the same activities.  相似文献   

数控机床三轴伺服电机安装——工程化教学案例实施     

舒雨锋  范四立  刘志伟 《教育教学论坛》2019,(14):241-243

本文以数控机床三轴伺服电机安装为案例,结合自身数控机床装调与维修经验、课程项目工程化开发的经验及反思,积极探索研究数控机床装调与维修课程项目工程化的开发,建立一套具有职业教育工学结合的理论实践一体化的数控机床装调与维修专业方向课程项目工程化。  相似文献   

电动汽车现状及未来     

薛继超  张伯俊  刘金翠 《天津工程师范学院学报》2007,17(4):45-49

对电动汽车的关键技术进行了介绍,比较了电动汽车用各种型号电池的性能,总结了电动汽车用电动机需要满足的要求,及其动力总成的布局;对国内外电动汽车的现状进行了比较,并对其未来发展做了论述。  相似文献   

Integrating Computer-Mediated Communication into an EAP course     

Xiao Li  Ru-hua Cao 《Frontiers of Education in China》2006,1(4):589-600

The development of the computer along with the widespread use of the Internet has rapidly promoted Computer-Mediated Communication (CMC) as a very important communication media, which can be used widely and effectively in foreign language teaching and learning. This essay tries to explore the advantages of CMC as well as its proposed application, beginning with the introduction of some concepts related to CMC. From the research history, the rationale of using CMC in foreign language learning is summarised. The context of an EAP course is introduced and some suggestions on using CMC in this course are proposed.  相似文献   

Application of stochastic method to optimum design of energy-efficient induction motors with a target of LCC     

方攸同  范承志  叶云岳  陈永校 《Journal of Zhejiang University. Science. B》2003,(3)

INTRODUCTIONMostcountrieshaveimplementednewpoli ciesontheenergysavingandenvironmentpro tection.AmericanPresidentBushsigned“TheComprehensiveNationalEnergyPolicyAct”in1992statingthatnogeneral purpose ,three phaseinductionmotorswillbeallowedintoUnit edStat…  相似文献   

水喷雾灭火系统在柴油发电机房中的应用     

陈档  沈斐敏  郑建湖 《福建工程学院学报》2003,1(1):21-24

介绍了水喷雾灭火系统的原理及其控制方式，并用一工程实例介绍了水喷雾灭火系统的设计。该系统的灭火特点使其在朴救可燃液体及电气火灾中得到广泛应用。  相似文献   

异步电机矢量控制系统仿真研究   总被引：5，自引：0，他引：5  

张玉霞  刘海燕  张瑾  李晓梅 《大连大学学报》2005,26(2):44-47

异步电动机是一个高阶、非线性、强耦合的多变量系统.文中提出一种异步电动机矢量控制系统方案,并在此基础上设计了一个典型的矢量控制系统,然后利用matlab/simulink仿真软件对该控制系统进行建模与仿真研究.  相似文献   

异步教学与教育创新     

郑文发  赵复查 《韩山师范学院学报》2005,26(4):81-83,91

教育创新是由教育理念、教育目标、教育途径和教育方式所构成的教育体系，它体现在创造性的教学活动中，其目的是为了培养具有创造性人格、创造性思维和创造性技能的高素质人才。异步教学是黎世法经过20多年的潜心研究创立的具有创造性活力的教学模式，它是我国新时期基础教育实施新课程标准，培养创造性人才，强化素质教育的难得资源。异步教学与教育创新有十分密切的关系，它对培养、训练学生的创造性人格、思维和技能有独特的功能。  相似文献   

一种新型高功率密度的正弦波永磁电机   总被引：1，自引：0，他引：1  

崔巍  江建中  汪信尧 《上海大学学报(英文版)》2004,8(2):187-192

A novel high power-density PMSM (permanent magnetic synchronous motor) with independent magnetic flux path for each phase is proposed in the paper.The complex mathematic model of PMSM is simplified by decoupling of magnetic flux paths between motor phases.In addition,harmonic compoments are lowered through optimum design of EMF (electric motive force) wave.Thus the ripple torque caused by EMF wave distortion is suppressed.  相似文献