傅里叶级数展开 meaning in Chinese

fourier expansion

4 the average power of a non sinusoidal periodic current is equal to the sum of powers of all its fourier series components
非正弦周期电流电路的平均功率等于其傅里叶级数展开式所有分量的功率之和。
Based on vibration principle , the paper establishes dynamics analysis model of output shaft with elastic support , according to fourer series spread principle of periodic function , the dynamic response formula is derived by separating complex vibration force into sum of many simple harmonic excitation function of whole number times frequency relations . the result shows that response of both sides support is synchronous when load distribution non - uniform coefficient is 1
依据振动理论建立了具有弹性支撑的输出轴的动力学分析模型，根据周期函数的傅里叶级数展开原理，将复杂的激振力分解成为多个频率成整倍数关系的简谐激励函数，导出了动态响应表达式，结果表明，当载荷分配不均匀系数为1 . 0时的输出轴两端支撑同步。