frequency variation
英 [ˈfriːkwənsi ˌveəriˈeɪʃn]
美 [ˈfriːkwənsi ˌveriˈeɪʃn]
网络 频率偏移; 频率飘移; 频率变化; 频率漂移; 频率改变
双语例句
- It's found that: ( 1) Abnormal frequency variation of the tropical cyclone affecting East China is caused by the adjustment of mean monthly circulation of the Northern Hemisphere in flood season;
研究发现：（1）影响华东地区的热带气旋汛频数的局地性异常变化是汛平均环流半球性调整的结果； - Design and analysis of Frequency Synthesizer for Frequency Variation Laser Ranging
变频法激光测距频率合成器的设计与分析 - Furthermore, a ring CCO based frequency tuning scheme is proposed to reduce frequency variation.
设计了一种基于环形CCO的锁相环自动频率调谐结构来减小频率偏差。 - Practical Design for Digital Teaching and Experiment Device of Speed Control by Frequency Variation; The Thoughts on Perfecting Oil Products Quantity Management Using Liquid Level Meter Management System
数字化变频调速教学实验装置的产品化设计利用液位仪管理系统完善油品数量管理的设想 - Simulation Design of Frequency Variation Tracker of Weak Vibration Signals Based on Chaotic Oscillator
基于混沌振子的微弱振动信号频变跟随器仿真设计 - Digital filtering technique based on least square method, multichannel sampling technique and frequency variation sampling technique were used experimentally.
实验应用了基于最小二乘法的数字滤波技术、多通道采样技术、变频率采样技术。 - Frequency variation process and unit's swing process after fault can be closely simulated.
故障后的频率变化和机组摆动过程可确切地仿真。 - In accordance with some parameters of motor's equivalent circuit changed following frequency, the optimum rate of frequency variation which is suitable for starting, braking and speed regulating in wide scope has been derived.
文中针对电机等效电路中有些参数随频率改变的情况推导出了在起动、制动和大范围调速时最佳频率变化率。 - The frequency variation mechanism of transmission impulse resulted from defects in steel-tube-concrete is presented by using dispersion theory.
用散射理论阐明了钢管混凝土中缺陷处透射脉冲频谱变化的机理。 - Since the parameters of the designed controller can schedule with the frequency variation of the harmonic disturbance and satisfy some performance specification requirements, it can effectively reject all known varying frequency harmonic disturbances.
由于所设计的控制器参数能够随干扰频率变化进行调度并能满足要求的性能指标，因此实现了对所有已知变化频率谐波干扰的有效抑制。 - Calculation of Harmonic Current and Distortion Angle in Oil Transferring System with Frequency Variation Speed-regulation
变频调速输油系统谐波电流和畸变角的计算 - The improved algorithm can track frequency variation of the time-varying signal with no extra calculation burden.
对算法进行了改进，在不增加计算量的情况下，实现了对频率变化的跟踪。 - Ionospheric motion and frequency variation of radio wave
电离层的运动与电波频率的变化 - In order to cope with the frequency variation of industrial power and in order to optimize both the rejection band and the fidelity of seismic information, we designed a narrow band autotrack notch filter.
为了适应工频频率的变化和解决陷波器阻带宽度与地震信息保真度之间的矛盾，我们设计了窄带自动跟踪陷波器。 - The paper studied the issue of low frequency in shallow parts of cross-hole seismic reflection sections using imaging principle and deduced frequency variation factor.
本文利用成像原理对井间地震反射剖面的浅部频率变低问题进行了研究，导出了频率变化因子。 - Influence of Atmosphere and Zonal Tides on High-Frequency Variation of Length of Day
大气和带谐潮汐对日长高频变化的影响 - The seismic gap, belt distribution and frequency variation before this event are discussed in this paper, serving as a useful means of monitoring future activities in the area.
本文讨论了这次地震前的地震活动空区、条带分布和频度变化，这对监视该区今后的地震活动是为助益的； - The problems pertaining to the weak system operation such as overvoltage, voltage instability, frequency variation, low frequency voltage oscillation, low harmonics and dc outage are revealed by means of test and analysis.
模拟试验和分析表明，弱系统运行会带来过电压、电压不稳定、频率变化、低频电压振荡、低次谐波和直流解列等方面的问题。 - A Constant Pressure Water-supplying System Based on Speed Regulation by Frequency Variation
基于变频调速的恒压供水控制系统变频调速技术实现恒压供水 - Problems and transformation plans of speed control system by frequency variation in cooling of sintering conveyor belt were presented. Perfection of computer control software was explained.
介绍了烧结带冷原变频调速控制系统存在的问题及改造方案，对计算机控制软件的完善做了说明。 - In this paper, frequency variation law of blasting seismic wave is discussed, and the calculation model is simplified, also through the verification of structure response under the action of different frequencies, the frequency factor in blasting seismic wave is analyzed.
对地震波的主频变化规律进行了探讨，简化了计算模型，并根据结构响应对不同频率成分的影响进行验证，对爆破地震波中的频率因素进行了分析。 - This paper introduces in detail the configuration and working principle of the constant pressure water supplying intelligent system with frequency variation based on PLC. Concrete discussion is made on the hardware design and the control method of the control system based on the S7-200 PLC.
本文详细介绍了基于PLC的智能变频恒压供水系统的结构和工作原理，并具体讨论了基于S7-200系列的PLC的控制系统的硬件设计和控制方法。 - The simulated extraction of weak frequency variation signal is carried out with the expressed Resonant frequency locking property when system transits from chaotic to great periodic motion.
利用系统从混沌状态到大周期转变时所表现出的共振锁频性质，进行了微弱频率变化信号的仿真提取。 - Based on the maximum entropy spectrum theory of the time series analysis and the Fourier analysis, a time domain parameter for the diagnosis of frequency variation is proposed.
频域分析是各种动态信号处理的重要内容。本文基于Fourier分析和时序分析的极大熵谱估计理论，提出一种可用于诊断频域特征变化的时域特征参数。 - By analyzing the time-frequency of yarn signal, instantaneous frequency variation can be obtained and then online spectrum analysis of yarn signal can be carried out to perform real-time supervision of the conditions of process and equipment and detection of the abnormality during processing.
通过对纱线信号进行时频分析，可以得到每个瞬间的频率变化，进而对其进行在线谱分析，可以实时监测工艺及设备状况的变化，及时发现生产过程中的异常。 - The frequency variation in random phase undulation and Max. Root mean square error in the range of measured frequencies to measure frequency undulation are discussed through the analysis of the phase delay filter which uses a phase delay method and the frequency measuring technique with double loop demodulation.
分析了利用相位延时方法的相位延时滤波器和双回路解调的测频技术，讨论了随机相位波动产生频率的变化，以及衡量频率波动的测量频率范围内的最大均方根值误差。 - Infantry and motor vehicle will be identified firstly. According to differences of target's instantaneous frequency variation, that is, the instantaneous frequency variation of infantry has periodicity, Infantry and motor vehicle are identified.
首先进行步兵和机动车目标的区分，根据目标回波瞬时频率变化的不同，即步兵目标的回波瞬时频率变化具有一定的周期性，依此实现了步兵和机动车目标的区分。 - An adaptive lattice notch filter with the capability of tracking frequency variation is applied to filter the sensor output signal, whose frequency, amplitude and phase are time-varying based on the random walk model, of Coriolis mass flowmeter and its frequency is calculated.
采用能跟踪频率变化的自适应格型陷波器对频率、幅值和相位均按照随机游动模型变化的科氏流量计传感器输出信号进行滤波，求其频率； - An adaptive on-time control buck controller is presented. The techniques of input feedforward and output feedback are adopted to solve the problem of switching frequency variation in COT control. By using the charging current compensation circuit, the linearization of on-time with input voltage is realized.
设计了一种自适应开启时间的Buck型控制器，基于输入电压前馈和输出电压反馈技术来解决COT控制开关频率变化的问题，利用充电电流补偿电路，实现了输入电压与开启时间的线性化。 - Study the changing law about the complex electrical parameters of leakage and non leakage interval with the frequency variation. Analysis the each influence factors on positioning accuracy.
研究了渗漏、未渗漏区间的副电学参数随频率的变化规律，对影响定位精度的各因素进行分析。