由过渡过程求频率特性的阶梯线法

Step-Line-Method of Determining Frequency Response from Transient Response

[1]中建立的阶梯线法适用于由阶跃过渡过程、回零过渡过程、脉冲过渡过程求频率特性.本文将阶梯线法推广到能适用于除上述三种过渡过程之外的其余各种输入作用(如半正弦波、三角波、上升前沿不陡的“阶跃”信号等)下的过渡过程求频率特性。这种方法比[2][3][4]中采用的Bowersox和Carlson的方法具有适用范围广、简单等优点。

The step-line-method of determining frequency response from transient response had been established in Ref.[1], which may only be used for tran sient response to either positive or negative unit step function and unit impulse function. Besides this, the paper has establised more general step-line-method of determining frequency response from transient response which may be used for more general input signals, e.g.half sine waves, triangular waves, square waves, etc.The advantages of this method in comparing with the Bowersox's and Carlson's methods[2] [3][4]are wider scope of application and simplier mathematical operations.