It neither has heating problem of the electronics soft starter, nor generates high frequency harmonic like SCR.
它没有电子软起动器的发热问题，也不会像晶闸管一样引起高次谐波。
The effects are even more significant for higher frequency harmonic waves incoming horizontally to the narrower canyons.
这一影响对狭窄河谷在较高频率的谐波水平入射的情况下更为显著。
Any subtle change of capacitance can be measured through the method of modulation on high-frequency harmonic oscillation return circuit.
电容的微小变化可通过对高频谐振回路调制的方法进行测量。
As an effective way of eliminating high frequency harmonic, active Power Factor Correction (PFC) technology has been deeply researched and has broad application.
有源功率因数校正技术(PFC)作为一种有效的谐波抑制方法，得到了广泛而深入地研究与应用。
High frequency harmonic in electric power network can pollute the network, control high frequency harmonic is an important research problem in electrical system function.
电网中的高次谐波对电网有污染，抑制高次谐波是电力系统运行中的重要研究课题。
The output waves of traditional resonant DC-Link inverter have too much low frequency harmonic waves which affect the output performance, because it can only use DPM control.
由于传统谐振直流环节逆变器只能采用离散脉冲调制方式，输出波形中含有丰富的低次谐波，严重影响输出性能。
Positive temperature coefficient (PTC) thermistor and triple frequency harmonic filter can reduce zero sequence voltage when a nonlinear resistance is used to prevent ferroresonance.
在非线性电阻消谐方式下，正温度系数(PTC)热敏电阻和三次谐波滤波器可以较好地解决零序电压偏高的问题。
Large amplitudes of cables can be induced by low order frequency harmonic oscillations. Then, some destructive accidents will happen, and some efficient control methods will be needed.
缆索结构系统在外部激励作用下将产生低频谐振，会导致大的振幅而可能有破坏性事故发生，故需要一种有效的方法控制这种振动。
It is concluded that the transient response to a high frequency harmonic ground motion can increase greatly the displacement response of structures, particularly for the long period structures.
研究结果表明：在简谐地面加速度作用下，高频地震动也可以引起长周期结构产生很大的位移反应，且最大位移反应出现在结构的瞬态自由振动阶段。
A new method is proposed, based on the instantaneous reactive power theory, to detect high frequency harmonic current and instantaneous reactive current applying high pass filter simultaneously.
基于瞬时无功功率理论提出了一种应用高通滤波器同时检测高次谐波电流和无功电流的新方法。
The chords the students liked best have frequencies with that harmonic relationship, too - all the frequencies are integer multiples of a common fundamental frequency.
大学生们喜爱的和弦也都有着最好的谐振关系——所有的谐振频率都是一个常见基频的整数倍数。
Adjust the frequency, volume, and harmonic content and you can see and hear how the wave changes.
调整频率、体积和谐波内容，你就可以看到和听到波是怎么变化的。
The active filter acts as an infinite impedance to the external for the fundamental frequency and as a low resistor for harmonic frequencies.
对外电路而言，在基波频率下有源滤波器被控制为无限大阻抗，在谐波频率下被控制为小电阻。
The switch frequency is increased and the output harmonic is decreased while the overcurrent protection is ensured.
保证过电流保护的同时，还提高了开关频率，减小了输出谐波。
The basic idea using array sweeping to suppress harmonic interference is to reasonably design each sub-sweeping frequency band that can reach the goal of elimination of harmonic interference.
利用组合扫描压制谐波干扰的基本思想就是合理地设计各个子扫描频宽，达到消除谐波干扰的目的。
In this paper, we divided the double frequency crystal into numerous small double frequency units and derived the harmonic power and the double frequency efficiency in each unit.
本文中将倍频晶体分割成无数多个小倍频单元，并导出每个倍频单元中的谐波功率与倍频效率。
This technique performs harmonic analysis of the nonspeech audio signals and then the resulted attributes including time-varying amplitude and frequency functions are piecewisely linearized.
这种方法首先对非语言声音信号进行谐波分析，然后对所得到的时变振幅与频率等声音信号参数进行分段线性化。
It shows signal harmonics is obviously weakened by the smoothing action in the setting process and there is a best conversion frequency to minimize harmonic distortion.
发现了建立过程的平滑作用可以明显地削弱信号的谐波分量，并存在一个最佳转换频率，使谐波失真达到最小值。
The component having the lowest frequency in a complex vibration (fundamental frequency or first harmonic).
复杂振动中频率最低的成分(基频或一次谐波)。
At present, our country power quality national standard was chiefly stipulated five quotas: frequency, harmonic and voltage deviation, three-phase unbalance and the voltage fluctuation and flicker.
目前我国电能质量国家标准主要规定了五个指标：频率、谐波、电压偏差、三相不平衡及电压波动与闪变。
To conquer the old wavelet inherent shortcoming, a combine wavelet is designed and used to realize the accurate detection to harmonic contents and frequency of power quality transient signals.
为了克服小波固有的缺陷，本文构造了一种组合小波，并利用它实现了对电力暂态谐波信号含量及频率的准确检测。
An effective method of microcomputer aided detection and frequency analysis of harmonic in power-network is presented.
本文给出了一种应用微机进行电网谐波检测与频谱分析的有效方法。
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 method consists of real-time estimation of signal frequency, synchronous tracking of sampling frequency and error correction of harmonic coefficients.
该方法包括信号频率实时估计、采样频率同步跟踪和谐波系数误差校正几个要素。
Additional negative feedback is provided to set loop gain to unity at the oscillation frequency, to stabilize the frequency of oscillation, and to reduce harmonic distortion.
为了使振荡频率稳定并降低谐波失真，需要加入一个在震荡频率处能够提供单位增益的负反馈路径。
In the analysis resonant frequency, modal loss factor and harmonic response of structures are studied.
在分析中分别针对结构的固有频率、模态损耗因子以及简谐响应进行了研究。
For rectangular window FFT interpolation algorithm, the negative frequency components of harmonic components have a greater impact on the fundamental calculation error.
采用加矩形窗fft插值算法，谐波的负频分量对谐波计算的误差影响较大。
This paper introduces the computation method on the harmonic frequency of the torsional vibration in the mechanism of an antenna system.
介绍了天线系统驱动机构扭转振动谐振频率的计算方法。
Inverter control in practice concerns three aspects: fundamental frequency, amplitude, harmonic profile.
实践中的变极器控制涉及到三个方面：基频、振幅、谐波剖面。
The stationary solution of system was solved by harmonic balance method, and the amplitude-frequency response was presented.
采用复变函数将系统的动力学方程简化，利用谐波平衡法分析了系统的稳态解，得到了系统的幅频响应。
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