Unlike fixed-gain robust control, which trades off performance with modeling uncertainty,
direct adaptive control uses partial modeling information for online tuning. The present …

Adaptive control of systems with poorly known or unmodeled unstable zero dynamics
remains a challenging problem. This paper presents an extension of retrospective cost …

This dissertation develops data-driven retrospective cost adaptive control (DDRCAC) and
applies it to flight control. DDRCAC combines retrospective cost adaptive control (RCAC), a …