Abstract
A CAD program package has been developed for the design of suboptimal linear regulators. Various controller configuration and performance index options are available and the package adopts a common numerical approach to the solution of these problems. Recent numerical improvements and enhancements are described including the study of sampled-data systems. Three design applications are included. For a helicopter regulation problem output feedback and dynamic compensation techniques are employed with a model-following approach to attempt to match new designs to a desired model response resulting from a linear optimal regulator design. Sensitivity reduction is realized in a gas turbine engine example using output feedback and is further reduced by dynamic compensation. The third example deals with a sampled-data system and involves the design of an output feedback controller for a gas turbine engine with significant time-delay components.
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