The book presents practical methodologies to design reliable control systems, bridging the gap between successfully-tested theory and real world control system implementation. It is written for engineers and researchers designing reliable control solutions for industrial, energy, environmental, biomedical, chemical, electrical, mechanical, and aerospace applications. The chapters showcase over fifty successful real world cases studies, including: commercial wind turbines, wastewater treatment plants, power systems, satellites with flexible appendages, spacecraft flying in formation, large radio telescopes, and industrial manufacturing systems. It utilizes the QFT Control Toolbox (QFTCT) for MATLAB, developed by the author, for problems and projects in each chapter.