Problem 1175. Singularity

Created by Özgür

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Singularity is very important thing of robust control.

Try to plot singular values over frequency of a MIMO system.

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Solution Stats

110 Solutions
9 Solvers

Last Solution submitted on Jun 14, 2017

Last 200 Solutions

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Richard Zapor on 4 Jan 2013

Test Suite of assert(isequal(singular_value_of(x),sigma)); is non-functional. x is undefined. sigma lacks parameters or an assigned value. Is the quesiton what function to use? Then use strcmp(funct_singularity,'sigma')

Solution Comments

Solution 298256

1 Comment

1 Comment

Claudio Gelmi on 8 Aug 2013

Borrowed from master Alfonso...

Solution 290706

3 Comments

3 Comments

Jean-Marie Sainthillier on 30 Jul 2013

???
Without sigma OK, but without x ?

Alfonso Nieto-Castanon on 30 Jul 2013

hint: I learned this trick from FrequencyDomain by studying the testsuite in the get_me v4 problem (http://www.mathworks.com/matlabcentral/cody/problems/1752-get-me-v4-cody-hacking-challenge), there is a very specific protection there against the hack needed to solve the 'x' issue here...

Jean-Marie Sainthillier on 31 Jul 2013

Thank you for this hint. It's obvious that the get_me v4 problem frustrates me.
:)

Solution 215007

1 Comment

1 Comment

Harish Maradana on 9 Mar 2013

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singular value singularity