H-infinity Control

H-infinity control is a mathematical technique used to design controllers that ensure a system performs reliably despite uncertainties and disturbances. It aims to minimize the worst-case impact of external disruptions, such as noise or system variations, on the system’s performance. By optimizing the "H-infinity" norm—a measure of the system's maximum energy response—it creates robust control strategies that maintain stability and accuracy even under challenging conditions. This approach is widely used in engineering fields like aerospace and industrial automation to enhance safety and performance in unpredictable environments.