Nonlinear Scheduling Approach for H-Infinity/Mu-Synthesis Controllers

A recently-developed technique for gain scheduling is illustrated by application to an autopilot design problem for a pitch-axis model of a highly-maneuverable missle. Using H-Infinity designs at widely-spaced operating conditions, we develop a nonlinear gain-scheduled controller that achieves closed-loop specifications throughout the operating range. Various theoretical issues that arise are discussed in terms of the design example.