How to represent uncertain transport delays
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Hi all,
I would like to have a dynamic system with uncertain transport delay. Is there any straightforward way to do it using Control System and Robust Control toolboxes?
I was able to create either a system with uncertain poles and zeros, or a system with constant ('certain') time delay.
T = ureal('time',1); G_unc = tf(1,[T 1])
Gdel = ss([],[],[],1,'OutputDelay',1)
However, the two things together did not work:
ss([],[],[],1,'OutputDelay',T)
gave the following error (due to ltipack.matchType)
Error using StaticModel/ss (line 107)
Undefined function or variable "A".
and
ss(T,T,T,T,'OutputDelay',T)
resulted in
Error using StaticModel/ss (line 107)
The value of the "OutputDelay" property must be a vector of nonnegative numbers.
Am I missing something? Any help would be appreciated..
Thanks, Ondrej
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Arkadiy Turevskiy
2013-6-11
Hi,
Unfortunately, modeling of uncertain transport delays is not currently supported.
Arkadiy
3 个评论
Arkadiy Turevskiy
2013-6-11
Thank you for your suggestion.
You might be interested in taking a look at our recent webinar on modeling time-delay systems. It covers robustness analysis for uncertainty in time delay value.
Arkadiy
Boris Konig
2021-1-8
Unfortunately, the link does not work anymore. Is the webinar still available somehow?
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