An Identification Method of System Transfer Function Based on Step Response Curves

Jianfeng Wang, Lefeng Wang, Fei Liu


In this paper, a limit theorem of Laplace transform is introduced. Method for recognizing system transfer function by using step response curve of test. Simulation and analysis of Second-order systems based on MATLAB. Through compiling M file technique in MATLAB, running the files to get the system model structure and parameters results. The result show that the method has a little error, it is an effective identification method for low order system model.


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