Test Circuit Using a Kind of Variable Frequency Technology to Compensate for Breaking Current Attenuation 一种采用变频技术来补偿开断电流衰减的试验回路
To carry ( suspended particles, for example) along in a current. Infrared Photography Application in Measuring Microwave Attenuation Crossing the Plasmas Plume 流体带走(如悬浮微粒等)红外热像仪在喷焰羽流微波衰减测试中的应用
Combined with the problems during the experiment, design a improved testing circuit of Direct Current Attenuation Method. 结合试验过程中遇到的问题,给出了改进的直流衰减法测试电路。
The result showed that Curie temperature, the element size and the thickness of metallic leaf springs have a significant effect on the characteristics in current attenuation of the above mentioned thermistors. 居里温度、元件尺寸的大小及消磁正、副片间金属簧片的厚度对电脑彩色显示器PTC消磁热敏电阻器的电流衰减特性有重要影响。
It is bring forward that current attenuation ratio could be used to grade the antisepsis layer in pipe detection when the current detection technique adopts in multipipe. 对于采用多频管中电流检测技术进行管道检测时,提出了利用电流衰减率对管道的防腐层进行分级的方法。
The current linear attenuation model and dynamic V A characteristics model were compared. 比较了低能电弧放电电流线性衰减模型和动态伏安特性模型。
In this paper, the main factors affected the current attenuation of PTC thermistors for demagnetization in the colored computer screens were analyzed and discussed in theory and experiment. 本文从理论及实验上分析探讨了影响电脑彩色显示器PTC消磁热敏电阻器电流衰减特性的主要因素。
Analysis of low energy arc discharge characteristics based on linear current attenuation model 基于电流线性衰减模型分析低能电弧放电特性
Input Current Harmonic Distortion of Boost Power Factor Correction ( PFC) and Its Attenuation Boost功率因数校正器中输入电流波形失真分析与抑制
On the base of contrasting and comparing current estimating method and estimated value of hydrothermal heat flux, exponential attenuation model are put forward to compute heat flux of hydrothermal activity. 本文对现有的热液热通量估算方法进行了对比与讨论,提出了指数衰减模型来估算海底热液热通量。
For the line frequency input current, phase-shift and attenuation introduced by the filter are no more than 3.3 ° and near 0 dB respectively. 对市电频率的输入电流,滤波器引入的相移不大于3.3°,衰减几乎为0;
The machine has function of unified adjustment, bypass striking, gas control, spatter control and current attenuation etc.. 该机具有一元化调节、旁路引弧、气体流量控制,飞溅控制、电流衰减等功能。
The Current Situation and Future of Seismic Data Prestack Noise Attenuation Techniques 地震资料叠前去噪技术的现状与未来
The investigation of the measure principles of Direct Current Attenuation Method, Voltage Integral Method, and Direct Load Method. 较为深入的研究了直流衰减法、电压积分法和直接负载法的测试原理。
This article describes the influence of the roller-shell materials on the magnetic intensity in the casting-rolling zone, based on skin effect, eddy current effect, magnetic field attenuation and shielding effect occurring in the magnetic field. 本文主要从介质对电磁场的集肤效应、涡流效应、磁场衰减以及屏蔽效应的角度,研究辊套对铸轧区电磁场的影响。
In low field range, the change of current with time can be simulated by attenuation of power index, and the attenuation coefficient intends to decline with the increase of the applied electric field. 在弱场下,电流随时间的变化可用幂指数的衰减来模拟,而且衰减系数随场强的增加有减小的趋势。
This paper simply introduces the current attenuation method of AC power, and then relates the characteristic, work principle and working wave-form of AC square-wave TIG welding machine. 首先简要介绍了交流电源的电流衰减方式;其次讲述了交流方波TIG焊机的特点、工作原理以及工作波形;
For the fast attenuation phase and relative steady phase, various factors is obtained by analyzing. The relative current attenuation decibel value was used to indicate the microwave attenuation anisotropy. 并通过试验,针对膜通量的快速衰减期以及相对平缓期,分别分析求解了各项系数.从实验角度分析了微波衰减各向异性与力学各向异性之间的统计相关情况。
It has functions of constant current exter-nal characteristic, internal arc automatic starting, gas control, current attenuation ere. 用于TIG焊,该机有恒流外特性,内置自动引弧、气体控制、电流衰减等功能。
There a good coincidence in the calculation of shield layer current and measuring results in the aspect of waveform, oscillating circle and attenuation law. 皮电流计算与测量结果在波形、振荡周期、衰减规律等方面有较好的一致性。
The manner of arc starting control increases succeed rate, current attenuation arc stopping control improves welding shaped of arc pit. 采用电流衰减收弧控制方案,改善了弧坑的焊缝成形。
For current linear attenuation model it draws a conclusion that arc discharge time is proportional to the product of inductance and initial current and is irrelevant to the source voltage. 其中由放电电流线性衰减模型得出放电时间和电路电感与初始电流的乘积成正比而与电源电压无关的结论;
And the author on the first time brings forward the method of determine the angle of zero power in Direct Current Attenuation Method by means of curve imitation, which provides a novel method to solve this difficult problem. 首次提出了在直接负载法中利用曲线拟合的处理方法来确定零功角状态的问题,为解决此难点问题提供了一种新的方法。
The periodic current subtransient attenuation of generator is taken into consideration, when calculating the short-circuit of generators, and the decay time constant is corrected in view of the line impedance when the short-circuit point is away from the bus-bar. 2. 在计算发电机短路电流时,考虑周期分量的超瞬态衰减,考虑短路发生在远离汇流排位置时线路阻抗对短路电流的影响,并对周期分量衰减时间常数进行修正。
The author theoretically analyzed the measure methods of synchronous armature reaction reactance, and research deeply the measure principles of Direct Current Attenuation Method. Combined with the problems during the experiment, design a improved testing circuit of Direct Current Attenuation Method. 根据同步电枢反应电抗参数的测试方法和直流衰减法的测试原理,结合试验过程中遇到的问题,给出了改进的直流衰减法测试电路。
According to the best work area of the current and temperature of the battery, the battery capacity attenuation curve will be showed through testing the battery characteristics in different conditions. 按照工作电流和温度的最佳工作区域,通过电池在不同工况下的充放电循环试验,采集到电池容量衰减的变化曲线。
Current work is focused on seismic attenuation mechanism in porous rocks, and the remaining problems include physical description and numerical simulation about complex porous rocks. 目前的研究主要集中于探索孔隙介质的地震衰减机制,存在的问题包括复杂多孔介质的物理描述以及数值实现。
By feedforward compensation of the estimated stack current yielded by the disturbance observer, the steady-state performance and the disturbance attenuation ability of the PEMFC system was significantly improved. 通过由干扰观测器对电堆电流的前馈补偿,PEMFC发电系统的稳态特性及系统抗干扰能力大幅提高。
One is the method of distinguishing magnetizing inrush current based on the ratio of voltage and fluxional differential current, and the other one is the method based on attenuation of fundamental wave. 第一种是基于电压与电流微分比值原理的励磁涌流鉴别方法,第二种是基于基波分量衰减的励磁涌流鉴别方法。