To confirm that a matrix has full row rank, for hinfsyn command ?

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dipan
dipan 2012-2-3
To run the hinfsyn from robust control toolbox one of required conditions is that the matrix [A-iwI B2; C1 D12] should have full column rank for all values of 'w' (frequencies). A, B2, C1, and D12 are the elements of the generalized plant P.
Is there any command/method by which I can obtain confirmation that the above matrix will hold full column rank for all values of w ? Analytically i do know that for w=0 this conditions fails for my plant.
thanks for the help. dipan

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回答（1 个）

Sean de Wolski
Sean de Wolski 2012-2-3
Perhaps rank()?
doc rank
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dipan
dipan 2012-2-6
thanks for your reponse, but 'rank()' works fine when the matrix is has constant terms. With the fourier argument s=iw, I cannot directly use it for all values of 'w'.

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