instantaneous value
英 [ˌɪnstənˈteɪniəs ˈvæljuː]
美 [ˌɪnstənˈteɪniəs ˈvæljuː]
n. 瞬时（即时）值
双语例句
- The transformation of the instantaneous value symmetry component applied, the positive sequence space vector of fault component of the voltage and current can be derived.
应用瞬时值对称分量变换，可提取电压、电流故障分量的正序空间向量。 - A device that senses and stores the instantaneous value of an analog signal.
一种检测和存储模拟信号瞬时值的设备。 - Another is using new differential algorithm based on fault component instantaneous value.
二是采用最新提出的故障分量瞬时值电流差动算法。 - Frequency modulation ( FM): the form of modulation in which the frequency of the carrier is varied in accordance with the instantaneous value of the modulating signal.
混频滤波式频率合成器频率调制：载波的频率依照调校讯号的瞬时值而改变的一种调制。 - A new control idea that the total value is primary and the instantaneous value is secondary was brought forward.
提出了以累计料量控制为主，瞬时料流量控制为辅的控制思路。 - To instantaneous value's starting component with threshold value's fluctuating, the protection's operation may delay;
对于瞬时值启动元件，由于干扰点影响了浮动门槛的值，有可能使保护推迟启动； - Traditional textbook considers that the maximal current instantaneous value occurs in three-phase short circuit of Infinite bulk electrical power system only when the phase voltage instantaneous value is zero and there is no load before short circuit.
现行电力系统分析教材未经过严格证明，就认为短路前空载且该相电压瞬时值为零，是无穷大电源有最大三相短路电流瞬时值的条件。 - Since the GPS based clock synchronization technique has been successfully applied in line current differential protection, it's possible to make tripping decision by using instantaneous value of fault component.
GPS时钟同步技术在电流纵差保护中的成功应用，为利用瞬时值进行动作判定提供了条件。 - Different from the traditional vector method, this algorithm uses instantaneous value to compute the compensation reactance. The proposed method is verified by the analysis of the simulation waveform. Compared with other methods, the presented one is more simple and convenient.
不同于传统的利用向量进行推导的方法，该算法利用瞬时值计算补偿电抗，并给出了对比仿真波形图，与向量计算的方法比较，证明该算法比较简单和方便。 - The paper discusses the basic conception of longitudinal dispersion coefficients and points out that they should divided into those of approach value, constant value, and instantaneous value.
本文讨论了纵向离散系数的基本概念，提出纵向离散系数应区分为渐近值、恒定值和瞬时值。这种方法具有一定的实用价值。 - The instantaneous value and mean value of basic wave current and voltage can be measured with this method.
它可以检测变频调速系统中电流、电压基波分量的瞬时值、平均值和功率因数角。 - The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.
在单位功率因数整流器中，利用瞬时值比较法来控制电源电流，不但控制简单，还可有效限制器件的最高开关频率。 - The robust mixed H2/ H ∞ estimation method can solve the problem of robust estimation for the dynamic system with model uncertainty and noise. The steady-state variance and the instantaneous value are not more than the individual upper bound.
在滤波理论中发展起来的鲁棒H2/H∞方法，可以较好地解决在模型中带有不确定性的动态系统的鲁棒估计问题，能够使得稳态估计误差的方差和瞬时值均在一定的范围内。 - Based on the concept of "original switch", the instantaneous value of common-mode voltage for matrix converter under the control strategy of two line voltage is analyzed in the paper and its general rules are summarized up.
该文在“原点开关”概念的基础上，对双电压合成控制策略下矩阵变换器共模电压的瞬时值进行了分析，总结了共模电压瞬时值产生的一般规律。 - The control scheme is using SPWM modulation method to control the compound flyback bi-directional current source high-frequency link DC/ AC converter and using the voltage instantaneous value feedback to control the converter which works in chop mode.
控制方案采用SPWM调制方式来控制双组合式单端反激变换器，同时采用负载电压瞬时值反馈方式控制高频斩波工作，使能量从负载侧反送回电源，从而实现功率的双向传输。 - The Reactive Power and Negative Sequence Compensation Algorithm of SVC Based on Instantaneous Value
基于瞬时值的SVC无功及负序补偿算法 - This paper analyzes detailedly the principles on distributed busbar protection-current instantaneous value differential method, impedance method, and put forward the new method of current fault component phase method, then compares with these methods.
本文详细分析了分布式母线保护中的原理&瞬时值电流差动法、阻抗法，提出了电流故障分量相位法的新方法，将这几种方法进行比较。 - A UPS Inverter with Instantaneous Value Feedback and Harmonic Injection
采用瞬时值反馈及谐波注入的UPS逆变器分析 - The dynamic measurement and test mean to determine the instantaneous value of a variable and its variations with time, which is a continuous measurement process to determine the value of a measurand as a variable.
所谓动态测试是指量的瞬时值以及它随时间而变化的值的确定，也就是被测量为变量的连续测量过程。 - Secondly, realize the double closed loops control of the instantaneous value and the virtual value.
然后实现了输出电压瞬时值和有效值双闭环反馈控制； - The instantaneous value of the phase current 、 electromagnetic power and torque of the motor, the output voltage and current of the transformer, the input current of the power converter is derived with circuit analytical method.
并用电路分析法，从电动机的实际工作状态出发，导出了稳态运行时电源变压器输出电压、电流、电机绕组电流、电磁转矩、电磁功率及逆变器输入电流等瞬时值或平均值的表达式。 - Practical Calculation of Short Circuit Current Instantaneous Value in Electric Power Plant System
电厂电气系统短路电流瞬时值的实用化计算 - Collect the plantar dynamics parameters of the performer in the process of manipulating by using three-dimensional measuring force platform. The parameters should include the initial value of the plantar when the performer generates force and the instantaneous value when rotating.
应用三维测力台采集手法操作过程中施术者足底的动力学参数，包括：施术者足底发力的初始值和扳动瞬间值。 - The gradient estimation in the proposed algorithm is improved by using the weighted time average instead of the instantaneous value to approximate the ensemble average.
在本文中，所提算法的梯度估计用加权时间平均值来代替瞬时值去近似总体均值。这样能较好地消除误差通道辨识环节和主动控制环节之间的相互影响，从而提高系统的总体性能。 - The research use instantaneous value to calculate the surface voltage gradient on the transmission lines and the electric field on ground.
论文对于输电线路表面电场和地面电场的计算均采用电压瞬时值。 - Modeling method based on the instantaneous value of the data follows the TVA load model structure. The instantaneous value of the data modeling and model validation, including the negative sequence component and frequency information, improve the utilization of the measured information.
基于瞬时值数据的建模方法，沿用了TVA负荷模型结构，但建模及模型验证时均采用瞬时值数据，包含了负序分量和频率信息，提高了实测信息的利用率。 - After analyzing the topological structures and operating principle of the main inverter circuit in HSPS, a double loop control strategy that is voltage RMS outer and voltage instantaneous value inner has been designed.
在分析HSPS部分逆变器的主电路拓扑结构和工作原理的基础上，设计了基于电压有效值外环电压瞬时值内环的双闭环控制策略。 - This paper introduced five control strategys including triangle-wave modulation, carrier phase shifted SPWM tecnology, hysteresis current tracking control, instantaneous value comparison control and one-cycle control, which have their strong point.
本文引入了三角波调制、多重化与移相载波SPWM技术、滞环电流跟踪控制、瞬时值比较控制、单周控制五类控制策略，在性能方面各有优势。 - Voltage source control employs voltage as external loop and current as inner loop with instantaneous value as feedback. Inner control loop uses capacitor current as feedback to improve the dynamic characteristic. The paper studies the PI optimization considering the pole set method.
电压源并网采用基于瞬时值反馈的电压电流双环控制方法，内环采用电容电流反馈闭环，提高了系统的动态特性，并用极点配置方法对控制器的参数进行优化设计。 - Through comparison of a variety of control methods and simulation, decided to use the control method of the combination of average value PID feedback and Instantaneous value PID feedback.
通过各种控制方法的对比和仿真研究，决定使用平均值PID反馈和瞬时值PID反馈相结合的控制方法。