# History ## Where did Robust Control come from? After the beginnings of modern control and the development of optimal control, John Doyle released a paper in 1978 titled [Guaranteed Margins for LQG regulators](doyleGuaranteedMarginsLQG1978a). This is a less than one page paper that basically gave birth to the robust control field, with a three word abstract: "There are none." # What does Robust Control do? Robust control works with [[What is gain scheduling?]] # What are the limits?