I am trying to simulate descriptor (singular) systems with time delays!

I am trying to simulate descriptor (singular) systems with time delays, but I don't know how. I checked dde23, but no hope. Any ideas?

the system is as follows,

EXdot(t)=AX(t)+BX(t-Tau)

[mo hua]

You may try to use Simulink. The block "Algebraic constraint" may be helpful for you.

Answer 1

[M]

You can define your system using the

dss

function and specify the delay with the specific option and then use

lsim

to simulate your model.