A SEMI-EMPIRICAL SYNTHESIS OF ROBUST FEEDBACKS USING μ -MANIFOLDS

This paper prospects the topology of a class of robust feedbacks measured by structured singular value. It starts at delimiting the full extent of frequency domain in searching for a feasible system characterized by performance-in-specification, reliability-in-operation and order-of-compensator. This makes possible extension of the design-test-analysis approach that is popular in industry to a semiempirical synthesis to shorten the time consumed in controller development. The research journey ends at an illustrated example where the prospected topology is used to develop robust loop-filters in phase-lock-loop circuits served for frequency-to-voltage transducers.