The main composition of MRI system is introduced including magnet, gradient-RF system, cooling system, reconstruction system and operation system. 论述了磁共振系统的主要组成部分磁体、梯度-射频系统、制冷系统、重建系统及操作系统组成。
Hybrid stepping motor rotor with permanent magnets, excitation and produced by permanent magnet electromagnetic torque realize stepping operation. 混合式步进电机的转子用永久磁钢,由励磁和永磁产生的电磁力矩实现步进运行。
Investigation of losses in permanent magnet synchronous motor under different operation conditions 永磁电动机不同运行条件下的损耗研究
Review on Development of Permanent Magnet Synchronous Motor for Hybrid Electric Vehicle Synchronous Tracking Control for Hydraulic Stewart Platform Based on Combination Tracking Errors in Operation Workspace 混合电驱动用永磁同步电动机发展综述液压Stewart平台基于工作空间综合偏差的同步控制
Configuration and performance of permanent magnet flux-switching motors with consideration of flux-weakening operation 永磁开关磁链电机弱磁运行的结构与性能氧化物铁磁性半导体电子输运特性的研究
Analysis of Inductance and Harmonics of Fault-tolerant Permanent Magnet Machine in Electro-mechanical Actuators Position Closed-loop Self-synchronization Operation of Hybrid Step Motor Using the Harmonic Back EMF 电力作动器中永磁容错电机的电感和谐波分析用谐波反电势实现混合式步进电动机闭环控制
A novel interior permanent magnet hybrid excitation synchronous machine ( IPM-HESM) is proposed, its configuration characteristic and operation principle are discussed. 提出一种新结构切向磁钢混合励磁同步电机,分析其结构特点和运行原理。
The Iron Loss Calculation of HSPM Machine and Experiment Test Research; Investigation of losses in permanent magnet synchronous motor under different operation conditions 高速永磁电机定子损耗计算与实验测试研究永磁电动机不同运行条件下的损耗研究
In addition, we select rubber to encapsulate the permanent magnet structure so as to improve the safe operation level and avoid being rusted. 并从提高扫查器运行安全性和防腐考虑,选用橡胶封装磁轮。
This paper studies the design features of permanent magnet AC servomotor with two kinds of different operation principles, and points out the difference magnet circuit calculating from traditional motor. 探讨了两种不同运行原理永磁交流伺服电动机的设计特点,指出磁路计算与传统电机的不同之处;
Current Vector Control Method and System of Permanent Magnet Synchronous Motors for High Torque Operation 永磁同步电机高转矩电流矢量控制方法和系统
The permanent magnet actuator, as the new operation system of vacuum circuit breakers, is the key to the transformation from mechanical actuation to electronic actuation. 永磁操动机构是新一代真空断路器的操作系统,是由机械操动向电子操动转变的关键。
This paper describes a current method of permanent magnet synchronous motors ( PM motors) for high torque operation. In this control method, by controlling the current phase angle actively, the reluctance torque is used to produce the maximum torque per armature current. 本文提出了一种提高永磁同步电机输出转矩的电流矢量控制方法,即通过实时控制定子电流矢量的相位角,充分利用磁阻转矩来使电机输出转矩达到最大值。
Proposes a novel SRM with permanent magnet ( PMSRM) ( and analyses of the basic structure, operation principle as well as the performance of such a kind of machine). 提出一种带永久磁钢的新型开关磁阻电动机(PMSRM),对其基本结构、运行原理及电机性能等作了分析。
THE OPERATION PRINCIPLE AND PARAMETERS CALCULATION FOR A NOVEL SINGLE PHASE DOUBLY SALIENT PERMANENT MAGNET MOTOR Operation Principle and Adjustable Speed Characteristic of A Doubly-Fed Reluctance Machine 一种新型双凸极单相永磁电动机的工作原理与参数计算双馈磁阻电机的运行原理与调速特性
The correction system is consisted of the beam orbit measure system, corrector magnet system and the control system, and the beam orbit correction code based on MATLAB is working on the operation interface. 该系统由束流轨道测量系统、校正铁系统和控制系统组成,基于MATLAB开发的束流轨道校正程序运行于操作员界面工作站上。
Direct thrust control for interior permanent magnet linear synchronous motor ( IPMLSM) with hysteresis causes notable thrust as well as flux and current pulses during steady-state operation or with uncertain switch frequency. 直线永磁同步电机直接推力滞环控制,导致开关频率不定及稳态运行时会有明显的推力和磁链脉动产生。
Compared with other type of bearingless motors, the bearingless permanent magnet synchronous motor, due to its advantages of simple structure, high power density, high efficiency, reliable operation, has become one of the hot spots in the research field of bearingless motors presently. 相比其他类型的无轴承电机,无轴承永磁同步电机具有结构简单、高功率密度、高效率、运行可靠等优点,成为目前无轴承电机技术的研究热点之一。
Permanent magnet brushless dc motor with its simple structure, reliable operation, good start torque and speed, etc, has been used in electric vehicles increasingly. 永磁无刷直流电机凭借其结构简单、运行可靠、启动转矩大、调速性好等优点,被越来越多地应用在电动车领域。
Permanent magnet synchronous motors ( PMSM) have many advantages such as high power density, high output torque and simple operation etc. Therefor, they have been wildly used in many fields like aerospace, national defense, home appliances and so on. 交流永磁同步电机具有功率密度高、输出转矩大、控制相对简单等优点,在航空航天、国防及家用电器等领域中得到了广泛地应用。
Permanent magnet direct drive wind turbines due to mechanical loss is small, efficient operation, low cost for maintenance have become the focus of research models. 永磁直驱风力发电机由于机械损耗小、运行效率高、维护成本低等优点而成为研究的重点机型。
Because of permanent magnet synchronous motor advantages, such as its simple structure, reliable operation, small loss and high efficiency, more and more used in various industrial applications. 永磁同步电机凭借其结构简单、运行可靠、损耗小和效率高等优点,越来越多地应用在各种工业场合。
Comparing with doubly-fed AC excited wind-energy generation system, the direct-driven permanent magnet synchronous wind-energy generation system has features of simpler structure, higher generation efficiency and higher operation reliability. 与双馈交流励磁风力发电系统相比,直驱永磁同步风力发电系统具有结构较简单、发电效率较高以及运行可靠性好等优点。
The permanent magnet outer rotor Claw-pole machine ( PMCPM) has novel structure, operation theory, performance analysis, which has a significant difference compared with traditional electrical machine and claw pole is made of special material. It is lack of relevant research at present in China. 永磁外转子爪极电机的结构新颖,其运行机理和性能分析和设计方法相比常规电机有较大不同,且爪极材料比较特殊,目前国内对该种电机的研究较少,尚有许多问题需要解决。
Permanent Magnet Synchronous Motor ( PMSM) has more outstanding performance than any other conventional servo motor in the structure characteristic and operation, The Permanent Magnet Synchronous Motor ( PMSM) AC Servo System have already become the main application of AC servo system. 永磁同步电机在结构特点和运行方式上都具有比其它传统伺服电机更为良好的性能,永磁同步电动机伺服系统已逐渐成为交流伺服系统的主流。
Besides, the imaging region is located inside the magnet, which is not suitable for the use in intervention therapy and operation. 而且,其成像区域位于磁体内部,限制了MRI装置在介入式治疗和手术中的使用。
The disc permanent magnet brushless DC motor ( DPMDBM) has a simple structure, reliable operation, convenient maintenance, axial compact structure, and stepless speed regulation and so on. 盘式永磁无刷直流电机具有结构简单、运行可靠、维护方便、轴向结构紧凑和无级调速等特点。
With the continuous development of permanent magnet synchronous motor, the advantages of its high efficiency, high power density and stable operation bound in the CNC machine tools and processing center has been widely used. 随着永磁同步电动机的不断发展,其高效率,大功率密度,稳定运行的优点必将在数控机床和加工中心得到广泛应用。
Make research in high efficiency and energy saving of permanent magnet synchronous motor, improve the power system operation power factor, reduce the energy consumption, which has good social and economic benefits. 研究高效节能的永磁同步电动机,提高电力系统运行功率因数,降低能耗,符合国家十二五发展,具有良好的社会和经济效益。