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cription (realization) ? Simplest case y(n)+an1y(n1)+…+a0y=u ? An key observation: y(t) and dy(t)/dt are function independent. Sept. 2022Jan. 2022, Copyright 169。 Qianchuan Zhao 7 Relation between models ? From I/O description to state space description (realization) ? From state space description to I/O description Sept. 2022Jan. 2022, Copyright 169。 Qianchuan Zhao 3 Modeling linear systems ? An example + u 3F 1F 3H 2H 2? 1? y + Sept. 2022Jan. 2022, Copyright 169。 Qianchuan Zhao 2 Problems ? What a model looks like? ? I/O model ? State space model ? How models are related? ? From I/O model to state space model ? From state space model to I/O model ? How to obtain a model? Sept. 2022Jan. 2022, Copyright 169。 Qianchuan Zhao 6 State space model ? The se