...when on（吸合时输出）： 1 Output when off（释放时输出）： -1 3、双击信号源“Step”模块，设置参数： Step time（阶跃时间）： 0 Initial value（初值）： 0 Final value（终值）： 1 Sample time（采样时间）： -1 4、Simulation Parameters中Solver的设...
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为克服传统单变量开环阶跃测试法测试时间长和误差大的缺点，提出一种基于渐进黑箱理论的多变量辨识方法。
To overcome the long test time and big error in single variable open loop step test method, a novel identification method based on asymptotic theory (asym) is presented.
压力差为阶跃变化的情况下数值计算结果说明了收缩部的断面积的时间变化减少了收缩部的惯性效果。
Time dependent calculation for a suddenly imposed pressure gradient has shown that variation of the cross sectional area reduces inertial effect in the contraction flow region.
文中还给出了单位阶跃响应和频率响应两种非参数模型，以及时间域和频率域的动态性能指标。
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.
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