查询词典 electric motor

Researches show that the drive force characteristics of the electric tractor drive system based on series DC motor is close the ideal characteristics, the curves are concave, low speed with constant power, and high speed with constant torque; the electric tractor has large working speed under different shifts, but the extensive coincidence speed shows that the variable ratio of the gear is unreasonable; the maximum climbable gradient of this electric tractor is more than 30%, and does not need frequent shift when working for its extensive climbable gradient; there are many influence factors of continuous working time, which the more obvious factors are working speed and working load, the working time increases with the increase of the working speed and working load.2. Simulation researches on the drive characteristic of the electric tractor.

研究结果表明：基于串励直流电动机(来源：ABC21论文网www.abclunwen.com)的电动拖拉机电驱动系统的驱动力特性场接近理想驱动力特性场，其各挡下的驱动力特性是一组下凹的曲线，低速恒转矩，高速恒功率；同一行驶速度下所对应高挡驱动力大于低挡驱动力，这是由电机的调速特性决定的；电动拖拉机各个挡位下具有较广的稳定作业速度范围，但是各个挡位之间速度重合的范围较多，说明所用变速箱变速比与电动机匹配不合理；电动拖拉机最大爬坡度达到30%以上，并且各挡爬坡度变化范围较广，作业过程中不需要频繁换挡；影响电动拖拉机连续作业时间的因素较多，其中作业行驶速度和作业负荷影响最为明显，作业负荷越大，连续作业时间就越短，作业速度越快，连续作业时间就越短。2、电动拖拉机驱动特性仿真研究。

Company's existing products for LD, CD, VCD, DVD, MD Recorder, CD-ROM and Camcorder such as audio, audio-visual equipment, spindle, skinhead, open boxes electric motors as well as Salisbury, electronic blood pressure device, game, gas valve, cash registers, electric toothbrushes, electric kettle, hair dryer, electric stove, massage chairs and so on supporting DC, and ultra-thin brushless motors, the main models have 300,310, 370,380,385,400,500,520,530,540,545,550,555,775,050,030,031,032, N30, N20, M20, K20, 180,130,12025 B10, CT-22 and brushless motor, hand-cranked generator series.

公司现有主要产品为LD、CD、VCD、DVD、MD Recorder、CD-ROM和Camcorder等音响、音像设备的主轴、光头、开盒马达以及电梳、电子血压仪、游戏机、燃气阀、点钞机、电动牙刷、电热水壶、电吹风、电磁炉、按摩椅等等配套直流、无刷及超薄马达，主要型号有 300、310、370、380、385、400、500、520、530、540、545、550、555、775、050、030、031、032、N30、N20、M20、K20、180、130、12025B10、CT-22及无刷电机、手摇发电机系列等。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

We are specialized in producing small special electric motors, main production such as : clutch motor, induction motor, textile machine motor and ironing table motor, with annual production capability of 1500000 sets.

芜湖微特电机有限公司是专业生产各种小功率特种电机的企业，主要产品包括工业缝纫机电机、分马力电机、纺织机械电机、烫台电机，年生产能力150万台。

Company specializing in the production of the special allowance from the state's expert Liu Kun personally presided over the country's own patented technology (Patent No. 992549590)¤ YTYY implicit Salient capacitive motor, the technology set-type motor and shaded pole motor running capacitor for one of the advantages, product structural design to break through the traditional design specifications, the adoption of innovative fixed-rotor structure, so that the magnetic properties of iron core be maximized, the motor is widely used in electric freezers, refrigerators, ice machines, range hoods, air conditioners, etc. supporting the use of household appliances with safety, environmental protection, energy saving and so on.

公司专业生产由享受国家特殊津贴专家刘新昆亲自主持的自有国家专利技术(专利号992549590)─YTYY隐凸极式电容电机，该技术集罩极式电机和电容运转式电机的优点为一体，产品结构设计冲破传统的设计规范，采用创新的定转子结构，使铁芯的导磁性能得到最大限度的发挥，该电动机广泛应用于电冰柜、电冰箱、制冰机、抽油烟机、空调器等家用电器配套使用，具安全、环保、节能等特点。

Toyota Motor Corp., Honda Motor Co. and Volkswagen will show new gas-electric hybrids, while General Motors Co. and Ford Motor Co. plan to promote new gasoline-powered subcompacts and compacts.

丰田汽车、本田汽车和大众将展示新型油电混合动力汽车，通用汽车和福特汽车则将推出以汽油为动力的新型小型车与超小型车。

In recent years, our company develop and produce the electric vehicle motors, AC servo motor explosion-proof, wind generators, oil motor, blower and pump frequency conversion motor, gearless elevator traction machine, such as permanent magnet synchronous motor of new products by the user's welcome .

近年来，我公司研制生产了电动车电机、防爆交流伺服电机、风力发电机、油田用电机、风机与水泵变频电机、无齿轮电梯曳引机等永磁同步电机新产品，受到用户的欢迎。

Companies are the main products: Sets the electrical, mechanical and electrical juice machine, vacuum cleaner motors, motor Dianpao carpentry, woodworking lathe motors, electric saw motor, air supply line saw the electrical motor, air compressor motor.

公司现主要产品有：高压清洗机电机，果汁机电机、吸尘器电机、木工电刨电机、木工车床电机、电锯电机、线锯电机送风电机、空压机电机。

April 14, Yongji speed motor Electric MW of new wind power project motor and permanent magnet motor was started in the ceremony.

4月14日，永济新时速电机电器公司兆瓦级风电电机及永磁电机项目举行开工奠基仪式。

The invention relates to an electric spindle integrated with an internal motor and radial air bearings and the motor spindle comprises an outer shell, an internal motor, a front cover and a back cover.

本发明涉及一种内装电机和径向空气轴承集成的电主轴。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。