A Strategy to Determine Frequency Bias Coefficient of Interconnected Power Grid Based on Dynamic Coefficient Method 基于动态系数法的互联电网K系数调整策略
A New Technique to Remove Doppler Frequency and Carrier Frequency Bias in PCM/ FM Telemetry System PCM/FM遥测系统中用于去除多谱勒频率和载波频偏的新方法
Effect of negative radio frequency bias and plasma discharge current on formation of c BN film 射频负偏压与放电电流对cBN薄膜形成的影响
Real-time identification for frequency bias setting of interconnected power systems and power correction 互联系统频率偏置系数的实时辨识与功率校正
Frequency estimator which based on two-order adaptive notch filter is the one frequently used for sinusoid on engineering, with a precondition that there is a small frequency bias of reference signal to input signal. 基于二阶自适应陷波滤波器的频率估计器是工程上常用的单频信号频率估计器,其前提是参考信号相对输入信号频偏较小。
A method of frequency stabilization& bias frequency locking, for output of unmodulated laser is introduced. 本文介绍了一种无调制激光输出的偏频锁定稳频方法。
Probe into Frequency Bias Coefficient Setting in Automatic Generation Control 自动发电控制中频率偏差系数确定方法的探讨
In order to implement object-controllability and ahead control of automatic generation control ( AGC), a new method of frequency bias coefficient setting is proposed based on the multi-target optimum technology and super-short-term load forecasting ( SSTLF). 为实现自动发电控制(AGC)的目标可控性和超前控制,提出了一种应用多目标最优化技术和超短期负荷预报的频率偏差系数确定方法。
A frequency bias coefficient setting technique is proposed by analyzing the investigative status abroad and AGC performance in China. 在分析国外研究状况及中国AGC实际运行的基础上提出了一种频率偏差系数确定方法。
The TBC is the main model used in AGC in the interconnected power system. When the coefficient of the frequency bias is equal to the natural area frequency responses characteristic, the system will operate meeting the principles well. 联网条件下按联络线功率频率偏差控制(TBC)是自动发电控制(AGC)的主要方式,通过对其控制量进行分析,认为频率偏差系数取系统自然频率特性时能体现电网运行的原则。
Frequency bias coefficient setting in tie-line frequency bias control model of automatic generation control ( AGC) significantly affects the system stability and frequency returning. 自动发电控制(AGC)中联络线频率偏差控制(TBC)模式下频率偏差系数的选择对控制系统稳定和频率恢复起着至关重要的作用。
In this paper properties of AFE and influences of frequency bias are analyzed, and formula on estimated variance lower bound is derived, and condition which is required by the bound is got. 本文分析了自适应频率估计器的性能及频偏的影响,得出了自适应频率估计方差下限的公式及达到此下限的条件。
The maximum entropy spectral estimation for phase modulated signals is shown to be a biased estimator: the frequency bias values of the maximum entropy spectral estimation for linear phase and linear frequency modulated signals are derived. 本文证明了相位调制信号的最大熵谱估计是有偏估计;推导了线性相位调制与线性频率调制信号的最大熵谱估计的频偏量;
The analysis of tie-line load frequency bias control scheme in north-east power system 东北电网联络线功率频率控制方案研究
The paper describes frequency bias, characteristic of frequency measurement and test platform design. Measurement results are discussed. 详细描述了军用电力系统的频率偏差,频率测试特点及测试平台设计,讨论分析了实际测试结果。
Design of Object-controllable and Ahead Frequency Bias Coefficient Setting 目标可控的超前频率偏差系数确定方法设计
Study of the High Frequency Transformer Magnetic Bias in the Inverter 逆变器中高频变压器偏磁的研究
Analysis of Control and Evaluation for Tie-line Load Frequency Bias in Power Grid 电网联络线功率与频率偏差的控制及考核分析
With frequency bias increasing, estimated bias and variance of adaptive frequency estimator ( AFE) enlarge. 随着频偏的增大,自适应频率估计的偏差和方差也随之增大。
For example, the convergence speed is slow, the steady-state mean square error ( MSE) after convergence is not small enough, and the equalization output has a random phase rotation, when the communication system exists frequency bias of carrier-wave and the phase rotation of channel. 但是CMA收敛速度慢,收敛后的稳态均方误差不够小,并且当系统的载波频率有偏离或信道存在相位旋转时,收敛后的输出信号会出现随机相位旋转。
Also included in the work is preliminary analysis of TT& C network optimization and effects of frequency bias and drift on OD accuracy. 初步分析了测控网的优化设计方案以及航天器所携带的超稳晶振的频偏和频漂对定轨精度的影响特性。
On the proposed frequency bias coefficient setting method, it could guarantee and improve frequency quality, harmonize grid and province dispatchs 'AGC action of, distribute area frequency regulation obligation fairly. 按照所提出的方法整定各区频率偏差系数可保证和提高系统频率质量,协调网、省调AGC动作,实现区域调频责任的公平分配。
Various shapes of the gold nanowires can be achieved by controlling the power supply frequency, DC bias voltage, electrolyte concentration and other parameters in the experiment. 实验中通过控制电源频率,直流偏置电压,镀液浓度等参数可以得到形态各异的金纳米线。
Comparing with the existing synchronization algorithms based on the interspersed pilots, this algorithm utilizes the channel estimation results, and is able to eliminate the time and frequency synchronization bias caused by the dispersive wireless channel. 和已有的基于内嵌导频子载波的时间和频率同步算法相比,该算法充分利用了信道估计的结果,消除了时变信道对时间和频率同步带来的偏差,达到了更好的同步性能。
Effects of the modulation frequency, bias current, the photon lifetime, spontaneous emission factor and spontaneous emission lifetime on third harmonic and third-order intermodulation distortions are investigated. 分析了调制频率、偏置电流、腔体损耗、以及自发辐射因子和自发辐射寿命对微腔器件非线性失真的影响。
There are no double frequency phenomena between the output displacement and input current with bias magnetic field, and double frequency phenomena without bias magnetic field. 当驱动磁场频率小于200Hz时,有偏置磁场时致动器的输出位移与输入电流之间无倍频现象,无偏置磁场时有倍频现象。
Analysis on how carrier frequency bias and phase bias influence the system performance is achieved by the Matlab emulation. 通过MATLAB仿真,分析了载波频率偏差与相位偏差对系统性能的影响。
However, similarly with CMA, the equalization output of the algorithm has a random phase rotation after convergence, since the algorithm only uses the modulus of the input and output signals, when any communication system exist frequency bias of carrier-wave and the phase rotation of channel. 然而同CMA一样,这种盲均衡算法也仅仅利用了输入和输出信号的模值,当系统的载波频率有偏离或信道存在相位旋转时,收敛后的输出信号会出现随机相位旋转。
The output current, output voltage and dead time were analyzed with respect to the change of incident light intensity and frequency, reverse bias voltage, load resistance and parasitic capacitance. 通过改变模型中入射光强度和频率、反向偏置电压、负载电阻和分布电容的设置,分析了电路中输出电流、输出电压和死时间的变化情况。