fundamental frequency

Finally, the fundamental frequency estimation under different PQ disturbances condition , such as harmonics , voltage.

提出了一种电能质量干扰环境下的电力系统基本频率估计方法.

The filter lets fundamental frequency and its photonics pass and stops else frequency components.

该滤波器允许基频及其倍频通过,同时抑制了其它频率分量,实现了时域平均法的功能.

The overvoltage of short-distance transmission line has already been studied. With the transmission distance increasing, the fundamental frequency overvoltage becomes more severely and the retraining methods more complicated.

短距离特高压输电线路的过电压问题已有研究，而当传输距离进一步增加时，工频过电压情况更为严重，抑制方法更为复杂。

Parameters influence analysis on isolation LNG storage tanks of different intensity, fundamental frequency, site, damping ratio, aspect ratio and spring stiffness. Suggested select the best isolator design parameters when designing LNG storage tank isolation combination construction. 6.

对隔震LNG储罐进行烈度、基频、场地、阻尼比、高径比以及复位弹簧刚度等参数影响分析，建议进行LNG储罐隔震设计时结合施工情况选取最佳隔震装置设计参数。

The application of the undetermined fundamental frequency for analyzing the critical value of chaos

待定固有频率法在分析系统混沌临界值问题中的应用

Detection of Initial Phase of Fundamental Frequency Component of a Periodic Signal Mixed with Stationary Noise

平稳噪声背景下周期信号基频初相位检测

Conclusion The results suggested the hypertrophic ventricular fold disturbed the phonation, making the fundamental frequency lower.

结论肥厚的室带可能参与发音, 使基频和低音降低.

Practical formulas to determine cable tension by using cable fundamental frequency

由基频计算拉索拉力的实用公式