The principle of voltage linear digital triggering of thyristor by EPROM is described and it is discussed to solve the frequency disturbance on digital trigger by phase locked loop .
描述了用EPROM实现晶闸管电压线性触发原理，讨论了用锁相环解决数字触发的频率扰动问题。
Therefore has the necessity to carry on the discussion to in the frequency changer application system disturbance question, promotes it further promotion application.
因此有必要对变频器应用系统中的干扰问题进行探讨，以促进其进一步的推广应用。
Computer simulation shows that the control of fuzzy variable structure can increase the robustness, solve the problem of shiver at high frequency, and improve the stability of small disturbance.
计算机仿真结果表明，采用模糊变结构附加励磁控制方法可以提高鲁棒性、解决高频抖动问题，并能够很好地改善电力系统的小干扰稳定性。
Disturbance degree of the apparent phase velocity increases with decrease of frequency until a maximum one occurs.
表观相速度扰动程度随频率减小而增加，直至出现大扰动。
By these methods, the disturbance of the frequency leakage and the noise can be reduced and the accuracy of the harmonic analysis can be improved.
这些改进能够进一步降低泄漏和噪声干扰，提高谐波分析的准确性。
The accuracy grade of frequency collection is improved, the function modular to prevent lightning and electromagnetic disturbance of signal and power source is added.
提高了频率采集的精度等级，增加了信号及电源防雷击和抗电磁干扰功能模块。
Frequency Selective Filter (FS f) is utilized to design feedback controller in frequency do-main. For each disturbance frequency, there are only two real coefficients to be tuned.
使用频率选择滤波方法在频域设计反馈控制器，对每个干扰频率，仅需调节两个实系数。
The disturbance of wind mainly means the variety of speed and frequency of wind, and it's affected by forest density and the distribution of wind field under complex landform.
风的扰动主要包括风速、频率等的变化，并受不同林木密度和复杂地形下的风场分布的影响。
Low level image processing is the base of localization. The paper discusses time domain filtering and frequency domain filtering according to the noise disturbance in the surrounding images.
低层视觉图象处理是视觉定位的基础，针对环境图象存在噪声干扰的特点，文章分别从时域和频域上分析了图象滤波的方法。
The terrestrial ionospheric plasma can be heated by a powerful ground-based high-frequency radio wave, which results in the disturbance of the electron temperature and density.
地面入射的大功率无线电波能加热电离层等离子体，引起电离层电子温度和密度的扰动，实现电离层的地面人工变态。
Not only the deviation of voltage and frequency from the rating value or other traditionally focused problems, but also the dynamic disturbance phenomena including oscillation and pulse are concerned.
人们不仅关注传统意义上的供电可靠性、稳定性以及各种参量偏离标称值问题，而且也对诸如振荡和脉冲之类的动态扰动现象开始重视起来。
The rule of the disturbance of high frequency sealer to CATV was compresively studied by means of theoretical analysis, data measurement, and spot observation.
采用理论分析、数据测试和现场考察等方法对高频机干扰有线电视的规律进行探讨。
Immunity tests are carried out by varying the test severity level and the frequency of the induced disturbance.
免疫性试验通过改变试验的严格标准和感应干扰的频率得以完成。
In regard to the excitation experiments, time-Accurate numerical stimulation was carried out to investigate the upstream disturbance frequency effect under different incidence in an annular cascade.
针对某静止环形叶栅的激励实验工作，相应的对扩压叶栅进行了不同气流攻角和激励频率的非定常粘性计算与流场分析。
According to features of power quality disturbance signal, this paper detects the disturbance signals of high-frequency, transient impulse and voltage notch with wavelet transforming.
针对电能质量扰动信号的特性，本文采用小波变换对电力系统的高频、瞬时脉冲、电压切痕扰动信号进行检测。
Power System forced power oscillation is a kind of low frequency oscillation caused by persistent periodic small disturbance.
电力系统强迫功率振荡为持续的周期性小扰动所引起低频振荡现象。
The simulation results prove that the three-phase phase-locked loop can work well in disturbance situation and variable frequency system when the frequency of the inputs is variable.
并对相位突变和频率突变的情况进行了仿真研究，说明在相位和频率发生变动时三相锁相环仍能有效地锁定相位，能够满足系统变频的要求。
This paper presented a new counter-countermeasure method, known as two way anti frequency coherent method, to counter the noise frequency modulation disturbance.
该文针对接近白噪声的小指数调频干扰提出一种新型反干扰的方法：两路倒频相关法。
The results indicate that non-detection zone of active frequency drift with feedback method is obviously less than non-detection zone of active frequency drift with fixed disturbance method.
结果表明，带反馈的主动移频式孤岛检测的检测盲区明显小于固定扰动的主动移频式孤岛检测的检测盲区。
In DVD focus servo system, the skew of the disc induces periodic disturbance whose frequency is the same with the rotation frequency of the disc.
在DVD聚焦伺服系统中，光盘翘曲会导致产生与光盘转动频率相同的周期性扰动。
According to joining the different disturbance, this method can be divided into active frequency drift with fixed disturbance method and active frequency drift with feedback method.
该方法根据加入扰动的不同，可以分为固定扰动的主动移频式孤岛检测方法和带反馈的主动移频式孤岛检测方法。
The characters of this method are high precision, strong anti disturbance capability, less requirements to hardware, especially suitable to low frequency measurement, etc.
本方法具有精度高、抗干扰能力强、硬件少、适用于低频测量等特点。
To analyze and detect the feature of frequency hopping signal exactly is a crucial prerequisite to carrying out disturbance to follow the track of signal.
小波变换是信号的时间-频率分析方法，它具有多辨分析的特点，它能有效地检测和识别跳频信号，在跳频通信中有极其重要的作用。
Band pass filter is adopted to remove the high -frequency switching disturbance in node voltage measurements and avoid the time delay of common low pass filter.
针对开关动态对节点电压采样值的干扰，引入带通滤波，滤除高频动态的同时避免了常规低频滤波的延时。
Some numerical results show that the effect of disturbance frequency on dynamic geometrical stiffness matrix must be considered when the instabil…
通过算例得出了必须考虑扰频对动力几何刚度阵影响的重要结论。
In this paper, a phase difference correction method is presented to correct the power frequency. This method has strong anti-disturbance capability by theoretical analysis and simulation.
理论分析和仿真表明这种方法具有较强的抗干扰性，其频率测量精度主要与信噪比、频率偏差及采样数据的长度有关。
The model is sensitive to disturbance frequency which is an essential factor for rock burst occurrence, and is insensitive to disturbance amplitude.
该模型对扰动频率非常敏感，扰动频率满足一定条件是动力扰动下洞室发生层裂屈曲岩爆的必要条件；
The model is sensitive to disturbance frequency which is an essential factor for rock burst occurrence, and is insensitive to disturbance amplitude.
该模型对扰动频率非常敏感，扰动频率满足一定条件是动力扰动下洞室发生层裂屈曲岩爆的必要条件；
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