Yinyang Zhai

Date of Award


Degree Name

Master of Science in Engineering


Electrical and Computer Engineering

First Advisor

Dr. Frank L. Severance

Second Advisor

Dr. Bradley J. Bazuin

Third Advisor

Dr. Liang Dong

Access Setting

Masters Thesis-Open Access


The main objective of this project is to design optimal controllers for Hover and Cruise Dynamic Systems of XV-15 Tilt Rotor Aircraft. The design criterion is to make system Robust in sense of both Stability and Performance. μ synthesis is applied to system uncertainty; this method is less conservative as compared to the worst-case H synthesis. The power of P∆K architecture is to represent uncertainties and system interconnections in μ synthesis. For comparison, the classical control techniques, such as Root Locus Algorithm, PID controller design with ITAE Performance Index, and Pole Placement Approach are also investigated. For application of H and μ synthesis, the modern control techniques, such as Linear Fractional Transformation, Mixed Sensitivity and Loop Shaping, are explored, too.