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本文提出了一种由阶跃响应或脉冲响应曲线建立传递函数的数值方法。该方法通过分析脉冲响应的过渡过程时间直接求取对象的极点,原理和算法较简单。仿真例子表明,该方法的建模精度能满足工程的要求,可以用于无零点、无重极点系统的建模。
In this paper, a numerical method of establishing transfer function from step response or impulse response curve is proposed. The method directly calculates the pole of the object by analyzing the transient process of impulse response. The principle and algorithm are simple. Simulation examples show that the proposed method can meet the engineering requirements and can be used to model zero-free and non-heavy-pole systems.