Typical State Space Model

[sadid]

Hello
I want a typical State space of an system (I just need A,B,C,..D and general thing about the system).
The system must have more than 5 state variable (n>=5)
for example a model of Robot's Arm or an airplane or ....
I want this typical State Space Model for my multi-variable control systems course's project we must do some relevant analysis with the help of matlab on the typical system. the system must have more than 4 state space

 

[sadid]

here is one example but it this case n=3
this article actually is an science direct article but available here:
https://www.mssanz.org.au/MODSIM97/Vol 4/Anh.pdf

 

[sadid]

would you please give me some links to a control Engineering related forum..or a forum with a control section....?