QFT toolbox

The Quantitative Feedback Theory (QFT) Frequency Domain Control Design Toolbox is a collection of MATLAB functions for designing robust feedback systems using the QFT method. The QFT Toolbox includes a convenient GUI that facilitates classical loop shaping of controllers to meet design requirements in the face of plant uncertainty and disturbances. The Interactive Development Environment (IDE) for shaping controllers provides a point-click interface for loop shaping using classical frequency domain concepts.