Is it possible to convert the whole Simulink model into a state space one?

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Dingyu Xue
Dingyu Xue 2019-5-20
回答： Jesús Zambrano 2020-2-7
Dear friends
In fact I am thinking of simulate a system, whose terminal information at t_k is known, and the information at t_0 is unknown. If I try to run Simulink model, it is prompted that since t_0 is smaller than the "initial time" t_k, simulation failed. So
(1) Is there a way to set the Simulink environment such that it can be simulated?
(2) If not, can I extract the state space model from the whole Simulink model such that ode45 or other solvers can be used to solve the problem?
Thanks
Dingyu

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回答（1 个）

Jesús Zambrano
Jesús Zambrano 2020-2-7
Hi Dingyu,
You first have to create the input vector(s) to your model and collect the simulation results or output vector(s).
With this done, you can follow a standard procedure for state space identification, for example following the steps in this link https://www.mathworks.com/help/releases/R2019b/ident/ref/estimatestatespacemodel.html
Hope it can help with your question.
Best,
Jesús

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