Robust control (H infinity and H2)

Robust control (H infinity and H2)

$\mathcal H_\infty$ and $\mathcal H_2$ norms In modern theory control, the performances of a system can be measured with the $\mathcal H_\infty$ (H infinity) and $\mathcal H_2$ (H2) norms. Noting $\text{Tr}()$ the trace operator, the $\mathcal H_2$ norm of a transfer...
LFT modeling of uncertain systems

LFT modeling of uncertain systems

Context The term “uncertainty” refers to the necessary discrepancies between the mathematical model of a physical system, and the reality. Such uncertainties may degrade the stability or the performance of the system, and motivate for robustness considerations as of...