该控制器以PM U得到的区域间电压相角差信号作为输入信号，能够直接有效地反映区域间低频振荡特性。
This controller's input signal is the voltage phase Angle difference between two areas obtained by PMU, which can effectively reflect the inter-area low frequency oscillation characteristics.
输入信号的频率只有位于噪声能量集中的低频区域，才有可能使输入信号被适量的噪声选择而产生随机共振现象。
Only the frequency of the input signal locates in the low frequency region, can the signal be selected by a proper noise level to produce SR phenomenon.
传统的PSS使用本地可测量的发电机电磁功率、转速等作为输入信号以抑制低频振荡。
The traditional PSS use the local signal such as the generator electromagnetism power or shaft speed as its input to restrain low frequency oscillation.
调制器完成对输入信号的量化并对量化噪声进行整形，将有用信号频带内的低频噪声搬移至高频段。
The modulator quantizes the input signal and move the low frequency inband quantization noise to high frequency.
该分频器系统能够任意实现包括16位数据输入的小数或整数范围的分频状态，当工作在低频范围时将非常接近理想值。
This system can achieve the 16 bit digital input at its option and the output signal approaches the ideal one when it work at the low frequency.
与连接器的输入范围和半空间低频过滤系统，该ds5a能够为几乎所有的工作室环境的集成。
Fitted with a range of input connectors and a Half-Space lf filter, the DS5A is capable of integrating into nearly any studio environment.
通过控制逆变器输入平均电流调节负载功率，简化了电路设计；通过单片机发出高频加低频调制的半桥驱动信号，消除调光过程中的电弧不稳定现象。
A easier and low-cost power control method is proposed in this paper, based on the regulation of the average input current of the inverter.
通过控制逆变器输入平均电流调节负载功率，简化了电路设计；通过单片机发出高频加低频调制的半桥驱动信号，消除调光过程中的电弧不稳定现象。
A easier and low-cost power control method is proposed in this paper, based on the regulation of the average input current of the inverter.
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