How to create a SYSTEM matrix to use it in psys?

I am trying to use psys to specify a parameter-dependent linear system.

The syntax is: affs = psys(pv,[s0,s1,s2,s3,s4]), where S0, S1, . . ., Sn should be given SYSTEM matrices.

I have tried using S0 = [A0 B0; C0 D0], etc. that are the matrices of a state-space system but I am getting this error: S0,S1,...,Sk must be SYSTEM matrices.

How can I create a SYSTEM matrix?

[Paul]

Can you post an example illustrating the problem?

The doc page for psys is not helpful. No example, no list of inputs and ouputs.

[Sarvani Panguluri]

Hi,

Could you please provide the code you have tried so that I can replicate the issue.

[Bladi Toaza]

Thank you so much, I could manage to solve this issue by reading a further LMI toolbox documentation

To convert to a MATRIX system, the function ltisys should be issued.

For a 2 parameters dependent (p) state-space system where . It is possible to create a polytopic system using psys by listing MATRIX systems at each coordinate p, (s0,s1,s2,s3,s4).

s0 = ltisys(A0,B0,C0,D0)

s1 = ltsys(A1,B1,C1,D1)

s2 = ltisys(A2,B2,C2,D2)

.

Sn

SYS = psys([S0,S1,S2,S4.....Sn])

Answer 1

[hossein hosseinivaez]

https://www.researchgate.net/publication/3611303_LMI_control_toolbox_user's_guide

this book can help you.see Example 2.1

[Bladi Toaza]

Thank you so much, it was very helpful to understand LMI toolbox and polytpoic systems. I could manage to solve the issue.

To convert to a MATRIX system, the function ltisys should be issued.

For a 2 parameters dependent (p) state-space system where . It is possible to create a polytopic system using psys by listing MATRIX systems at each coordinate p, (s0,s1,s2,s3,s4).

s0 = ltisys(A0,B0,C0,D0)

s1 = ltsys(A1,B1,C1,D1)

s2 = ltisys(A2,B2,C2,D2)

.

Sn

SYS = psys([S0,S1,S2,S4.....Sn])