查询词典 permanent magnet

Permanent Magnet Synchronous Motor has the advantages of high magnet density, small torque pulse, big torque-inertia ratio, high efficiency, simple construct and so on. PMSM has been applied to the occasions that requires high precision of control and high reliability far and wide, such as avigation, numerical control machine tool, radar and some military weapons follow systems, robot and so on. In addition, it plays an important part in Ac motors in modern times.

交流永磁同步电机具有气隙磁密高、转矩脉动小、转矩/惯量比大、效率高、结构简单等优点，在要求高控制精度和高可靠性的场合，如航空航天、数控机床、雷达与各种军用武器跟随系统以及机器人等方面获得了广泛的应用，在现代交流电机中也占有举足轻重的地位。

For the investigation of temperature rise in permanent magnets of permanent magnet synchronous motors, it is necessary to analyze eddy current loss in permanent magnets efficiently and accurately.

对于永磁同步电动机中永磁体的发热及温升，快速准确地分析永磁体的涡流损耗是其关键问题所在。

The forcer consists of two electromagnets that are identified in Fig. 11-70 as magnet A and magnet B and one permanent magnet.

这个forcer含有两种电磁体是在图11 - 70岁了，像磁石之一B和永磁体磁铁。

Hong Kong, Xu-hui magnet manufacturing company founded in 1976, in 1987 opened its first plant, after ten years of innovation, has now developed into a production and sales to the main motor with a magnet for permanent magnet ferrite, Soft, samarium cobalt, NdFeB magnetic materials, etc. Products as one of professional manufacturer.

香港旭辉磁石制造公司创建于1976年，1987年设立第一家工厂，经过十多年的创新，现已发展成为集生产、销售以马达用磁石为主体的永磁铁氧体、软磁、钐钴、钕铁硼等磁性材料产品为一体的专业制造公司。

A nonlinear adaptive speed controller based on adaptive backstepping approach for permanent magnet synchronous motors with nonlinear coupling and parameter uncertainties is presented. With the preposed controller, the parameter uncertainties are compensated and high performance speed controller for permanent magnet synchronous motors is shown to be globally asymptotically stable. The scheme is robust to the parameter uncertainties and load torque disturbance.

针对永磁同步电动机系统的非线性耦合特性以及参数的不确定性，采用自适应反步控制实现永磁同步电动机的非线性控制，在补偿参数不确定性影响，提高系统的抗干扰能力的同时，实现了永磁同步电动机的高性能全局渐近稳定速度跟踪控制。

Machine Annex: exhibition Taiwan precision milling machine accessories, Former Punch Punch Grinder Wheel Dresser Former perspective, tools, Motorola precision block precision regulated sinus oidal magnetic sucker units, wire-cutting ceramic fixture find Taiwan Li edge browser-hoon, Z axis configuration, and the Taiwan Universal Grinding Tools eagle, the British electronic control of permanent magnet sucker clamping devices, permanent magnet hoist, and the Association vice-wai, Jingshan universal clamp group Taiwan trade giant pneumatic tapping machine, the Kuril chuck, chuck soft claw claw hardware, hydraulic chucks

机床 附件：台湾精展铣床磨床配件，冲子成型器冲子研磨机砂轮修整器角度成型器，工具万力精密块规精密吸盘正弦磁台，线切割夹具台湾丽勋陶瓷寻边器，Z轴设定器，台湾鹰牌工具万能磨刀机，英国电控永磁吸盘夹紧装置，台湾仪辰ECE磁性工具，永磁吊重器，协威虎钳，京山万能夹具组台湾贸巨气动攻丝机，千岛卡盘，卡盘软爪硬爪，油压夹头

As a sub- project of national science and technology key project——"The Research andDevelopment of High Performance Rare Earth Permanent Magnet Machine ", this paper presents the research on several key questions of designing premium-efficiency permanent magnet synchronous motor uses in the fan or pump ,such as efficiency, power factor, pull-out torque and so on. The achievement that has value in the Engineering is obtained.

作为国家重点科技攻关项目&高性能稀土永磁电机的研究与开发&的一个子课题，本文围绕风机、泵类负载用超高效永磁同步电动机设计中的效率、功率因数、失步转矩等几个关键问题进行了研究，取得了工程上具有使用价值的成果。

The investment 200 million yuan, including a motor assembly MW wind power plant and a permanent magnet motor plant, built after 1800 with an annual output of 3MW wind turbine units, 3,600 units and the permanent magnet motor coils 5400 sets of various types of motor production capacity, estimated annual production value 2,000,000,000 yuan, will promote local economic development to add new impetus.

该项目投资两亿余元，包括一个兆瓦级风电电机组装厂房和一个永磁电机厂房，建成后将具备年产3MW风力发电机1800台、永磁电机3600台及各类电机线圈5400套的生产能力，预计年产值20亿元，将为推动地方经济发展增添新的动力。

The hybrid induction motor includes a housing; a stator installed in the housing and having a stator core portion and a stator coil portion; a rotor coupling body having a rotary shaft rotatably installed in at the housing, a cage rotor portion rotating integrally with the rotary shaft, and a permanent magnet rotor portion coupled to a circumference of the cage rotor portion with a certain air gap so as to be freely rotatable with respect to the rotary shaft; and a reverse rotation preventing switch, when the rotary shaft rotates reversibly, coming in contact with the permanent magnet rotor portion which is moved along the shaft by thrust generated by the rotor coupling body and cutting off power being supplied to the stator coil portion.

公开了一种混合式感应电机。所述混合式感应电机包括：壳体；安装在壳体中并且具有定子铁心部分和定子线圈部分的定子；篆字联接体，具有可旋转地安装在外壳中的旋转轴、整体地与旋转轴一起旋转的鼠笼式转子部分，以及永磁体转子部分，该部分以一定气隙连接到鼠笼式转子部分的周围以可相对于旋转轴自由旋转；以及防止反转开关，当旋转轴反转时，与永磁体转子部分形成并且切断提供给定子线圈部分的电源，其中当旋转轴反转时，转子联接体产生推力，通过该推力永磁体转子部分与反转防止开关相接触。

The cross stator iron core structure makes permanent magnet generate flux in the stator, making full use of the permanent magnet.

利用交错式的定子铁芯结构，使所有永磁体都能在定子中产生磁通，实现了永磁体的充分利用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。