I am using the Robust Control Toolbox for Robust Stability and Performance Analysis. For this purpose, the commands ROBSTAB and ROBGAIN can be used.
On your homepage you are giving an example of how ROBSTAB is connected with mu-analysis:
In the example, you show how the robust stability margins can be computed alternatively using the MUSSV function.
*Now my question is how can the robust performance margin be computed using MUSSV? *
I searched through the documentation but could not find any example. In an older document, I found how this was done. However, when following this procedure the computed robust performance margins are completely different from the ones computed by ROBGAIN. Out of curiosity, I also checked the former ROBUSTPERF command. And here the results match very well. What is ROBGAIN doing differently?
Best Answer