State-space for MISO in system identification toolbox

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.

Answer 1

[Arkadiy Turevskiy]

This example walks through a MIMO problem - you should be able to follow it to get a result you want.