Based on the introduction of components and principle of work of frequencymodulation system of constant frequency AC power supply, math model of frequencymodulation system is established.
在介绍某型恒频交流电源频率调节系统的组成和工作原理的基础上，建立频率调节系统的数学模型。
2
The arithmetic formulas for sine wave, linear frequencymodulation signal, V-style frequencymodulation signal, white noise signal, reverberation signal and echo signal are given by their definition.
根据信号类型的定义，给出了正弦信号、线性调频信号、V型调频信号、白噪声、混响和回波信号的合成公式。
3
The setting is introduced on the relationship between primary frequencymodulation speed difference and primary frequencymodulation load for current modulated type steam turbines with base-load.