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torque     
相关语句
  转矩
     Research on FNNS for Induction Machines Using Direct Torque Control
     基于FNNS的感应电机直接转矩控制研究
短句来源
     Research of Speed Sensor-less Direct Torque Control Of Induction Machine
     异步电机无速度传感器直接转矩控制系统的研究与实践
短句来源
     Research of the Direct Torque Control and Sensor-less Technology in the Synchronous Motor Drive
     无位置传感器同步电机直接转矩控制理论研究与实践
短句来源
     High Performance Direct Torque Control for Permanent Magnet Synchronous Motors
     高性能永磁同步电机直接转矩控制
短句来源
     Research on Direct Torque Control of Induction Motor Based on Field Oriention
     基于磁场定向的感应电机直接转矩控制研究
短句来源
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  扭矩
     Study on the Torsional Effect of Piezoelectric Quartz Disc and Manufacture of a New-type Torque Sensor
     压电石英晶片扭转效应研究及新型扭矩传感器的研制
短句来源
     Study of Friction and Torque in Trenchless Guide Drilling
     非开挖导向钻进摩阻和扭矩研究
短句来源
     Oil Seal Friction Torque Tester and Measurements of Friction Torque
     油封摩擦扭矩试验机及摩擦扭矩的测量
短句来源
     Probability Distribution and Statistical Estimates of Bulk Cargo Torque of Inland Barges
     内河大开口驳散货扭矩的概率分布和推断计算
短句来源
     Application of Torque Curves of the Pumping Unit
     抽油机扭矩曲线的应用
短句来源
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  力矩
     The Fundamental Study on the Ultrasonic Motor with Large Torque and High Precision
     大力矩高精度超声波电机的基础研究
短句来源
     Research on Design Method for Passive Torque Servo Control System and Its Application
     被动式力矩伺服控制系统设计方法及应用研究
短句来源
     DETERMINATING THE TIGHTENING TORQUE FOR CONNECTING ROD BEARING BOLTS OF DIESEL ENGINE SERIES 105
     105系列柴油机连杆螺栓扭紧力矩的选定
短句来源
     Torque Induced by the Convective Motion of the Floating Fluid in a Gyroscope of Single Degree of Freedom
     单自由度液浮陀螺仪中浮液对流引起的漂移力矩
短句来源
     The Effect of Cutting Conditions on the High Speed Hobbing Torque
     切削条件对高速滚齿力矩的影响
短句来源
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  转动力矩
     Tested results show that the bearing friction of the passive docking dynamics simulation testbed is 1.97N·m, the active's is 7.4480N·m, which is small compared to 80N·m torque produced by the spacecrafts in space,and the biggest error is about 9.3 percent.
     试验结果表明 ,被动仿真台轴承最大静摩擦力矩为 1 .97N·m ,主动仿真台最大静摩擦力矩为 7.4480N·m ,而航天器在空间对接产生的转动力矩为 80N·m ,则最大误差为 9.3% ,满足仿真台试验要求。
短句来源
     Methods: The zygomatic area used and not used as bearing seat for maxillary obturator prostheses and osseointegratedimplanted from defect cavity and from oral cavity at zygomatic area after zygobuccoplasty are comparatively analyzed bythe phinciple of leverage and the formula of torque (M=F×L).
     方法:用杠杆原理及转动力矩公式M=F×L,对比分析缺损侧有无颧区承力义颌以及从缺损腔内和从口腔内在颧区植入种植体的义颌受力后的情况。
短句来源
     Centrifugal force affects not only size but also negative rigidity of flow forces to flapper in the former case while centrifugal force affects size of flow forces and torque to flapper in the latter case.
     而对双喷嘴挡板阀而言,离心力影响双喷嘴挡板所受的液动力大小和转动力矩大小,从而影响双喷嘴挡板伺服阀的零漂,但离心力不影响液动力的负刚度;
短句来源
     In this paper the author carried out a dyna-mic analysis on working principle of strong lock washer andobtained by derivation the theoretic formulae for calculatingthe radial working pressure inner the lock washer as wellas the torque and axial force which can be transmittedby it.
     本文对强力锁紧圈的工作原理进行了力学分析并推导得到了锁紧圈内的工作径向压力以及它所能传递的转动力矩和轴向力的理论计算公式。
短句来源
     The soft cut-in device applying Atmel 89C51 MCU has been equipped successfully on the 600kW fixed pitch wind turbine generators. Via controlling the slope voltage and the time that ever step postpone, the fault that the torque increased as along with the phase voltage of stator growing was improved.
     基于89C51单片机的软并网装置成功地应用在定桨距失速型600kW风力发电机组的软并网系统中,该软并网装置通过控制斜坡电压的步长和电压平台的延迟时间,最大限度的改善了传统的斜坡电压软启动方式造成的电机转动力矩随定子电压的升高,转矩 时间曲线呈抛物线形发散增大的弊端。
短句来源
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      torque
    However, a ripple current occurs in the inactive phase due to the diode freewheeling during the non-commutation period in the traditional pulse width modulation (PWM) methods, which aggravates the torque ripples.
          
    As a result, the torque ripple is suppressed using the proposed method.
          
    Rotor broken-bar fault diagnosis of induction motor based on HHT of the startup electromagnetic torque
          
    The asymmetry of the rotor caused by broken-bar fault will give rise to the appearance of additional frequency component of 2sfs (s is slip and fs is supply frequency) in the electromagnetic torque spectrum.
          
    The startup electromagnetic torque signal is decomposed into several intrinsic mode function (IMF) with empirical mode decomposition (EMD) based on the Hilbert-Huang Transform.
          
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    The microstructure and the magnetic properties of cold reduced and annealed armco iron arestudied.The textures of the samples used in the experiments have been determined by the X-raypole figure and the magnetic torque methods as reported in the two earlier papers.The samples having higher magnetic permeabilities show a secondary recrystallization.Therelations between recrystallization and magnetic properties are briefly discussed.

    对国产工业纯铁在冶轧和热炼后的显微组织和磁性初步进行了试验。所用材料的轧制和再结晶结构已试测过,并叙述于前两篇报告里。具有较高的磁导率值的试样呈现二次再结晶.试样的再结晶组织和磁性的关系于本篇中作了简单的讨论.

    The speed- fluctuation of the loom crank shaft has much effect on the study of loom action and dynamic analysis. Without consideration of the fluctuation of speed, the result of any study will deviate from the actual condition to a great extent. Therefore, the calculation of the speed of the loom crank shaft and the determination of the moment of inertia of the "two shafts" (the crank shaft and the cam shaft with all the rotating parts mounted on them) is of important significance to the loom designers and research...

    The speed- fluctuation of the loom crank shaft has much effect on the study of loom action and dynamic analysis. Without consideration of the fluctuation of speed, the result of any study will deviate from the actual condition to a great extent. Therefore, the calculation of the speed of the loom crank shaft and the determination of the moment of inertia of the "two shafts" (the crank shaft and the cam shaft with all the rotating parts mounted on them) is of important significance to the loom designers and research workers. This paper is first given a brief statement of the significance of the speedfluctuation of the loom crank shaft and the balance of energy. Then it suggests a method of calculating the speed-fluctuation of the loom crank shaft and determining the magnitude of the moment of inertia of the "two shafts". The main principles adopted here are: first, the use of an equivalent moment of inertia of the "two shafts" and the beating mechanism; second, broadening the sense of the work done by the resisting torque of the loom; third, assuming that the consumed energy of the picking mechanism is not directly related to the speed-fluctuation of the crank shaft. Thus, the mutual effect of the balance of energy and the fluctuation of speed which existed in Prof. A. P. Maleshef's method is now eliminated. Therefore, it is possible to derive two equations, (11) and (14), for Calculating.the speed-fluctuation of the loom crank shaft and the moment of inertia of the "two shafts" directly, instead of the cut and try method given by Prof. A. P. Maleshef. Finally, two examples are given to justify that the suggested method is practically accurate.

    織机迴轉不均勻性对研究织机的运动学与动力学有很大的影响。不考虑迴轉不均匀性,对織机进行任何研究都是脫离实际的。因此研究织机迴轉不均匀性和“两軸”轉动惯量的計算,对設計者和研究者而言都是有重要意义的。本文首先对織机迴轉不均勻性及能量平衡作了簡要的說明。然后提出一个計算方法,它的主要論点是:采用了相当转动慣量和推广了阻力功的意义,并且假設投梭机構所消耗的能量与迴转不均勻性无直接影响。这样就可以消除能量平衡与迴轉不均勻性相互的影响,从而导出了兩个公式(11)与(14)用以直接地計算迴轉不均匀性和兩軸轉动慣量,不必采用馬雷舍夫教授的逐次漸近法。最后用兩个实例計算証实了这个計算方法在实用上是正确的。

    Torsional fatigue experiments were carried out on 99.6% commercial aluminum and 99.99% high-purity aluminum (annealed and cold-worked). The shape and the area of the hysteresis loop (stress versus strain) after various stress cycles N were determined, from which the energy loss△E in each cycle and the maximum torque Tm of the specimen were calculated. The △E-N curves and Tm-N curves were analyzed and different stages of the curves were correlated with the results of metallographic observations on the specimen...

    Torsional fatigue experiments were carried out on 99.6% commercial aluminum and 99.99% high-purity aluminum (annealed and cold-worked). The shape and the area of the hysteresis loop (stress versus strain) after various stress cycles N were determined, from which the energy loss△E in each cycle and the maximum torque Tm of the specimen were calculated. The △E-N curves and Tm-N curves were analyzed and different stages of the curves were correlated with the results of metallographic observations on the specimen surface during the process of fatigue. It is then concluded that, in the initial stage of fatigue loading, the basic process that gives rise to the change of △E and Tm is the pinning of dislocations by the vacancies generated during fatigue and this occurs as a bulk effect. Later on, the localized coarse slip regions appearing in the specimen give rise to an extra energy loss △E, but have only an insignificant effect on Tm. Consequently, the changes of Tm and △E in this stage no longer correspond to each other. Such an analysis may clarify many of the dis-crepencies reported in the literature concerning the results of observation on the change of △E and Tm (representing a change in hardness) during fatigue.

    进行了99.6%工业纯铝和99.99%高纯铝(退火和冷加工)的扭转疲劳试验,测定了经过各种应力循环数N以后的滞后迴线的形状和面积,从而算出了在每次循环中的能量消耗ΔE和最大抗扭矩Tm。对于所得到的ΔE-N曲线和Tm-N曲线进行了分析,并与在疲劳试验的各个阶段对于试样表面所作的金相观测结果作了比较,认为在试样中未出现局部滑移区以前,引起ΔE和Tm的基本过程是空位对于位错的钉紥作用,这是一种体积效应,但是在局部滑移区出现以后,这种滑移区引起额外的能量消耗,而对于Tm的影响并不显著,因而在这个阶段里Tm和ΔE的变化便不再彼此相对应。这种分析可以澄清过去文献中关于ΔE和Tm(代表硬度变化)在疲劳过程中的变化的许多互不一致的结果。 假定实验所观测到的曲线是这两种过程(整体过程和局部过程)所引起的效应的迭加,并且假定这两种过程对于ΔE和Tm的贡献由于疲劳振幅的大小、试样的处理状态(退火或冷加工)以及所合杂质之不同而异,可以满意地解释实验所观测到的各种曲线的形状和位置。这个观点的正确与否还有待于进一步的实验证实。

     
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