State-space for MISO in system identification toolbox

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AAA
AAA 2014-6-11
回答： Arkadiy Turevskiy 2016-12-14
Hi all, I am trying to obtain state-space matrices for a two input (temperature of ambient air and solar radiation)-single output (temperature in the room) system.
I've read matlab forums and its recommended to use iddata to create 2 SISO sets and merge(dat1,dat2). I have 8 states and two inputs, hence I expect matrix A 8x8 and matrix B 8x2, however when SI toolbox estimates the state space model it gives me matrix B 8x1 so it looks like the two inputs have somehow been merged into some kind of a single set. Am I doing something wrong? How do I get matrix B showing coefficients for both inputs? Please help! Thanks.

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Arkadiy Turevskiy
Arkadiy Turevskiy 2016-12-14
This example walks through a MIMO problem - you should be able to follow it to get a result you want.

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