In this field the amplitude of voltage space vector is distorted and phase angle is continuous.
空间矢量过调制算法的研究。
Under the condition of credible insulation, the identity of axles of beams, magnetic field and machinery was advanced, and therefore the amplitude of Corkscrew movement of beams could be reduced. Each structure was made up of six stages of insulators, and the angle between the insulator surface and the direction of the applied electric field is 450 The applied voltage is?
将上述理论研究和基础性实验研究成果应用到流体物理研究所的2MeV注入器二极管区的改造中，在阴阳极头部设计了一种多层的匀场环径向绝缘支撑结构，在保证可靠绝缘的基础上，改善了阴阳极的对中性能，提高了束、场、机械三轴的同一性，从而可以减小束的Corkscrew运动幅度。
In this paper, the influences of adjusting amplitude at different velocities on the flow field and temperature field at the exit of tip cavity are investigated.
这就为找出布流调整可行域，实现铸嘴型腔流场和温度场的在线调节提供了依据
In this paper, the influences of adjusting amplitude at different velocities on the flow field and temperature field at the exit of tip cavity are studied.
本文研究了两种典型入口速度调节方式对铸嘴型腔流场和温度场的影响，通过数值方法对铸嘴型腔非定常流动和传热进行了仿真分析，结果表明：在同一变化幅值情况下，入口速度阶跃变化、斜坡函数变化后的熔体出口速度、出口温度分布基本相同
This one-way wave equation fits eikonal equation and transport equation corresponding to full acoustic wave equation in travel-time and first order amplitude. According to the perturbation theory often used in inverse solution, we split the velocity field into intraformational constant velocity background and variable velocity disturbance. Then we calculate time-shift quantity of migration and amplitude correction coefficients for wavefield depth continuation in total uniform formation and each formation.
基于反问题求解中常用的摄动理论，把速度场分裂为层内常速背景和变速扰动，求得整个均匀层波场深度延拓的偏移时移量及振幅校正系数、各层的偏移时移量及振幅校正系数，从而得到一个基于傅里叶有限差分法的双域保幅叠前深度偏移算子方程。
Fluxgate sensors have the second harmonic voltage amplitude with the magnetic field strength is proportional to the adoption of second harmonic filter through phase-sensitive detector rectifier, to achieve full-wave rectifier, low-pass filter in through the phase-sensitive detector after the second harmonic into a smooth DC signal, on the one hand to the back of the circuit, on the one hand, the magnetic flux through the door to feedback regulation, the opposite magnetic field generated with the measured magnetic field, so that the work has always been zero fluxgate magnetic field, thus ensuring the most high-precision fluxgate.
磁通门传感器产生的二次谐波电压幅值与磁场强度成正比，二次谐波通过通过滤波器再通过相敏检波器整流，实现全波整流，在通过低通滤波器将相敏检波后的二次谐波转化成平滑的直流信号，一方面送到后面的电路进行，一方面通过反馈调节送到磁通门中，产生与被测磁场相反的磁场，使磁通门始终工作零磁场下，从而保证磁通门的最高精度。关键词：磁通门磁力仪，相敏检波器，磁场
In anisometropic amblyopia eyes, the amplitude of mfVEP were significantly attenuated in the 10° central visual field.
2屈光参差性弱视组弱视眼振幅密度在中央视野10°范围内下降最明显(P.01)，这种改变随离心度的增加而减少。
We got the universal single Qubit logic gate by adjusting the amplitude, frequency and last-time of the single mode laser field as well as the series of the pulses we used, based on the rigrous analytical solution and the technique of stimulated Raman adiabatic passage.
利用拉曼绝热通道的基本方法，基于严格解析解，适当调节激光场的频率、振幅、前后顺序以及持续时间，通过时间演化可以实现六个一位通用量子逻辑门。
Using Richards-Wolf vectorial diffraction integral, three-dimensional light field complex amplitude function was presented when linearly polarized Bessel-Gaussian beam passed through a high numerical-aperture system with primary coma aberration. In the case of linearly polarized Bessel-Gaussian beam, the intensity distribution of polarization components at the focal plane have been simulated under different comatic aberration coefficients.
利用Richards-Wolf矢量衍射积分公式，获得线偏振贝塞耳-高斯光束经具有初级慧差的高数值孔径系统聚焦后的三维光场复振幅函数，根据复振幅函数模拟了不同慧差系数下线偏振贝塞耳-高斯光束各分量及总光场在焦平面上的光强分布模式。
Therefore, response is different under same amplitude but different bias polarity. We presented the energy band diagram affected by build-in electric field.
我们提出受内建电场影响的能带图，并经由理论计算得到对应的两个能态，及其运动相反的原因。
The flywheel's and the shaft's dynamics equation under high speed rotation are built, and F. E. M. is applied to this question, at last, the resonance frequency, modal shape and reaction to the eccentricity stimulus of a flywheel system is analyzed really using the I-DEAS F. E. M. analysis software. The analysis show: The gyroscope effect to the flywheel rotor's and the shaft's vibration character under high rotate speed should be considered. At this time, the system's normal frequency is the function of rotate speed; The amplitude passing through the resonance field can be lowered obviously by improving the effective damping of the electro-magnetic bearing.
建立了高速旋转状态下，采用磁轴承作支撑的飞轮转子和转轴的动力学模型，给出了有限元法在此问题中的具体应用，并利用I-DEAS有限元分析软件具体分析了飞轮系统的共振频率、系统振型，以及对偏心激励的响应，分析表明：对于高速旋转的飞轮转子和转轴，应考虑陀螺效应对其动力学特性的影响，此时系统的固有频率是转速的函数；通过提高磁轴承的等效阻尼可显著降低系统通过共振区域时的振幅。
This system includes three parts: the ac celerating field amplitude and phase control, the cavity resonant frequency control and the high power interlock protection.
强流质子RFQ加速器加速场的频率为352.2 MHz，加速场幅度和相位的精度分别要求控制在±1%和±1 的范围，为了达到这一要求，设计了一套数字低电平控制系统，该系统包括加速场的幅度和相位控制、腔体的谐振频率控制和高功率射频连锁保护3个部分。
This paper analyzes the seismic reflection characteristics of low-amplitude structure, brings forward the research flow of data interpretation and summarizes the main recognition techniques: seismic forward modeling, well control improving resolution processing; 3-D velocity field analysis; dip logging correct and so on.
本文分析了低幅度构造的特点及地震反射特征，结合工区实际情况，提出了在地震资料解释阶段研究低幅度构造的流程和思路，总结了针对低幅度构造的主要识别方法：地震正演模拟、井控提高分辨率处理、层位精细解释、三维速度场分析、构造图倾角校正等。
Since the decrease of the acoustic stapedius reflex amplitude is mediated by the auditory efferent system in sound field, in clinical practice the function of the auditory efferents can be evaluated by testing the change of acoustic stapedius reflex amplitude with the stimulation of the wide band noise in sound field.
声场下白噪声刺激可致镫骨肌声反射幅值降低，临床上可以通过检测声场下白噪声刺激后镫骨肌声反射幅值的变化评枯听觉传出神经的功能。
ABSTRACT Electromagnetic phenomena generated by impulse voltage discharge have the characteristics of steep waveform front, widely frequency spectrum and large amplitude. Impulse voltage discharge will generate strong pulse electromagnetic field or arouse pulse voltage when it is in the discharge process of forming waveform, or puncture of gap, or flashover of test object.
冲击电压放电产生的电磁现象具有波形陡、频谱宽、幅度大的特点，冲击电压发生器无论是在形成冲击波的放电过程中、间隙击穿的过程中还是试品闪络的过程中，都可能产生强烈的脉冲电磁场，引起较高的脉冲电压等。
Using thismodel, the amplitude of electrical field and magnetic field, the largest frequencyare estimated.
利用混凝土结构在裂纹扩展过程中所产生的电磁信息可以进行结构诊断和监测。
A Doherty-feed-forward power amplifier for improving the efficiency and linearity was presented. Influence to the amplitude, the phase and the time delay mismatch of the feed-forward system has been analyzed, and the efficiency factor and the method of efficiency enhancement is discussed. Also the peaking amplifier bias and influence of peaking compensate line length to peaking efficiency point is analyzed. Finally the LDMOS field-effect transistor is used to design the Doherty-Feed-forward power amplifier, compared with the balance structure Feed-forward amplifier, simulation result shows its efficiency enhanced 5% when IMD3 is -65dBc.
将前馈技术与Doherty技术相结合，以满足功率放大器在效率和线性度方面的要求，同时对前馈系统幅度、相位、延时不平衡的影响进行了分析，就其效率因素和增强效率的方法进行了讨论；还分析了Doherty功率放大器中峰值放大器的栅极偏压V(下标 gs和峰值补偿线长度对获得峰值效率点的影响，最后把用LDMOS管设计的Doherty功放作前馈系统的主功放，与平衡结构作主功放的前馈系统相比较，仿真结果显示IMD3达到-65dBc时，其效率提高了5%。
An improved Gerchberg-Saxton algorithm for constructing fully continuous phase plate for beam shaping is proposed. The continuity of the phase plate can be ensured by use of phase unwrapping algorithm and Fourier filter operation, and a better far-field intensity profile can be obtained when the objective amplitude is replaced with a proper modified amplitude function during iteration.
提出一种适用于连续相位板设计的改进Gerchberg-Saxton算法，该算法应用相位展开相关原理，结合滤波处理使GS算法设计的近场相位连续分布，同时提出在GS算法的远场迭代中采用经过修正的振幅函数，可使远场光斑的包络更接近目标函数。
The voltage, current, temperature and recovering of the HTS tapes were measured and analyzed under nitrogen temperature of 77K and self-field with duration of 300ms and current amplitude in range of 100 A to 1005 A.
通过实验测量了在液氮温度(77K)、自场下Bi-2223/Ag超导带在幅值为100A至1015A，时间为300ms的工频电流冲击下，超导带材两端的电压，电流及带材表面温度的变化，得到冲击期间各参量的变化规律。
The phase signal is used as the signal of distance control signal between tip and sample in the shear-force detection mode. Meanwhile the PI feedback technique is introduced to feedback control both the amplitude and phase of the probe resonance, the amplitude and phase of the tuning fork probe keep a constant value while scanning imaging.
剪切力模式近场扫描光学显微镜(Near-field Scanning Optical Microscopy，NSOM)的音叉探针间距控制系统中，用相位反馈控制和检测剪切力，同时采用比例＋积分技术实现对音叉探针振幅的反馈控制，使探针振幅在扫描过程中保持为恒定值。