How to use state-space block in simulink with one input

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Beenish Mazhar 2012-9-1

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https://ww2.mathworks.cn/matlabcentral/answers/47170-how-to-use-state-space-block-in-simulink-with-one-input

评论： Cheetamun Koshal 2016-6-25

Hi I am using state-space block in simulink. I am having two inputs;so I have used a mux but state-space block is not accepting it because input becomes a row vector and I need a scalar value as an input to the state-space block. What should I do to make it a scalar value. Any guidance or help will be greatly appreciated.

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Azzi Abdelmalek 2012-9-1

编辑：Azzi Abdelmalek 2012-9-1

what are the sizes of your SS matrix A B C and D

Cheetamun Koshal 2016-6-25

Actually the input should be in column vector form. Try to transpose the row vector. And also the size of the matrix A, B ,C and D are important so that the system works

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Answer 1

Azzi Abdelmalek 2012-9-1

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https://ww2.mathworks.cn/matlabcentral/answers/47170-how-to-use-state-space-block-in-simulink-with-one-input#answer_57661

you have said that you have two inputs, then i can guess that the size of B is nx2, n is the order of your system. in this case, you can use a "Mux" block