It is more reasonable that the dynamic performance index both in frequency domain and in time domain should be calculated from model calculated frequency response and unit-step response.
由参数模型计算的阶跃响应与频率特性上计算时域与频域的动态性能指标才比较合理。
2
The non-parametric models of the unit-step response and frequency response and the dynamic performance index of both in time domain and in frequency domain are also given in this paper.