相位差,phase difference
1)phase difference相位差
1.Accuracy analysis of frequency estimated by applying time-shifting correcting method ofphase difference in presence of Gaussian white noise;高斯白噪声背景下时移相位差校正法的频率估计精度分析
2.An improvedphase difference algorithm based on Fourier transform for quazi-synchronous device;一种适用于自动准同期装置的改进傅立叶相位差算法
3.Aphase difference testing method based on frequency synthesis;基于频率合成的相位差测量方法
英文短句/例句
1.phase difference torque transducer相位差式转矩传感器
2.Phase Deference Measurement in MultisimMultisim仿真中的相位差测量
3.The Balanced Dual-mixer Heterodyne for Measurement of Phase Difference between two Coherent Lights;对称双混频外差法测量相干光的相位差
4.Research on Error of Phase Difference Algorithm Based on Correlation Theory基于相关理论的相位差算法的误差研究
5.Precise Location by Radio Phase Detecting Technology;利用无线电波的相位差实现精确定位
6.Technology of Direction-finding with Phase Interferometers and Passive Location with Phase Variations干涉仪测向与相位差变化率定位技术
7.A Method for Phase Difference Measurement with Correlation Function Based on Mat lab基于MATLAB的信号相位差的互相函数求法
8.The Effect of Uncertainty in Defocus Distance on the Wave-front Reconstruction with the Phase-diversity Algorithm离焦量误差对相位差法波前重构的影响
9.Analysis on Effect of Phase Difference on the Modulation Index of Single Channel Signal和差信号相位差对单通道信号的影响分析
10.quadrature amplifier放大信号具有90相位差的放大器
11.magnetoelectric phase difference torque measuring instrument磁电相位差式转矩测量仪
12.magnetoelectric phase difference torque transducer磁电相位差林转矩传感器
13.In practice there are three methods of accomplishing this phase difference.在实践中有三种方法来获得相位差。
14.Failure Detection and Calibration Algorithm of Coriolis Mass Flowmeter科氏质量流量计相位差检测方法研究
15.Research on Precision Measurement of Phase Difference;高精度数字式相位差测量系统的研究
16.Research on Offset Optimization about Signalized Coordinated Intersections;交叉口协调控制相位差优化方法研究
17.Method and Realization of GPS Precise Point Positioning Using Un-differenced Phase Observation;GPS非差相位精密单点定位方法与实现
18.A new method for restraining the spurious caused by phase truncation in DDS抑制DDS技术中相位舍位误差的新方法
相关短句/例句
Offset[英]["?fset][美]["?f"s?t]相位差
1.Research onOffset Optimization about Signalized Coordinated Intersections;交叉口协调控制相位差优化方法研究
2.The offset of the correlative intersection is adjusted in real time by transportation information collected by vehicle detectors on intersections.通过设置在交叉口处的车辆检测器不断采集车辆信息,实时调整关联路口间的相位差,并通过合理的交通配时,实现主干道双向绿波控制,从而有效地提升道路的通行能力。
3.Based on the analysis of the existing arterial control models and algorithms,the tactics of establishing the offset models are put forward according to the probabilistic method.在对现有线控制模型和算法进行分析的基础上提出按照概率思想求解相位差参数的策略。
3)phase shift相位差
1.Based on the electromagnetic propagation resistivity logging(EPRL) response functions, studied is the relationship thatphase shift ( Δ) and amplitude ratio (S) of EPRL vary with formation resistivity, source frequency and spacings between transmitter and receiver coils.利用电磁传播电阻率测井 (EPRL)仪器的响应函数系统地考察了其相位差Δ和幅度比S随不同地层电导率和仪器参数的变化规律。
2.Furthermore,the influences of the displacementphase shift and the expander natural frequency on its operating frequency were experiment.实验测试了充气压力和制冷温度对压缩机共振频率的影响;研究了膨胀机固有频率和运行频率对位移相位差的影响关系;采用多点热负荷静态复温法测试了制冷机的静态冷损,证明了氦气和丝网导热对静态冷损影响极小。
3.Periodically fully developed laminar flow and augment of convection heat transfer characteristics in wavy channels with differentphase shifts were analyzed.研究了流体在不同相位差的正弦型波纹通道内周期性充分发展的层流流动特征及强化换热特性,利用数值模拟方法探讨了波纹上、下板相位差对流动与换热的影响。
4)phase error相位差
1.Research onphase error of electric current transducer;电子式电流互感器相位差研究
2.Based on fast Fourier transform,Doppler frequency andphase error of the signals received by different antennas can be estimated by this algorithm quickly,furthermore,curve fitting method is used to get the complete set of the target motion parameters.测量中使用了一个小型天线阵列,基于快速傅里叶变换算法,雷达回波的多普勒频率和不同天线接收信号的相位差能够快速地被估计出来,进一步利用非线性优化的方法估计出目标的矢量脱靶量参数。
5)phase displacement相位差
1.This paper analyzes the essential causes of the zero-crossing distortion and points out that the major causes are the value of inductor and thephase displacement of the current loop.该文详细分析了PFC变换器的输入电流在输入电压过零附近产生畸变的原因,指出电感大小和电流环的相位差是影响高频输入下过零畸变严重的根本原因,Boost三电平变换器由于可以减小电感,提高等效开关频率,因此可以有效地减小过零畸变。
6)Phase difference error相位差误差
延伸阅读
相位差测量两同周期正弦电量对应点间角度差值的测量。此两正弦电量可以同为电压、电流，或一为电压、一为电流等。对应点常取正弦电量由负到正的过零点，相当于正弦电量函数的初相角。相位差的单位是度或弧度，正、负号表示领先或滞后关系。待测相位差的正弦电量的频率范围很广，因此采用的测量方法和仪器一般随频率的高低来选择。常用的方法是直接法和间接法。直接法 使用专用的仪表如指针式相位表、数字相位表，或采用阴级示波器来测量相位差。采用阴极示波器时，将两同频正弦电压信号分别加到示波器的X、Y轴，得到如图1所示的椭圆图形,则两正弦电压之间的相位差∮＝arc sin(b/α)。这一方法不能判断两信号哪一个领先或滞后，并且在∮值接近零时，椭圆也退化接近成为一条直线，即b值很小,所以∮值很难测准。间接法 通常采用三电压表法。一般要求两电压信号有一公共点（设为a点），当分别测出两信号电压Uab、Uca,以及两电压的差值Ubc后,可画出如图2所示的电压三角形。按余弦定理，两信号电压间的相位差当∮很小时,可将Uab或Uca中较大的一个信号电压分压，使分压后两信号的数值相等。如此,在测得Uab(=Uca)及Ubc后，即可得到 (弧度)
