Encyclopedia of Systems and Control Engineering, 4-volume set, offers a comprehensive overview of fundamental and contemporary topics in control systems. Spanning four volumes, it covers linear and nonlinear systems, and integrates experimental and analytical methodologies. This encyclopedia emphasizes cutting-edge developments, such as data-driven control and machine learning methods, which are crucial in modern industry. Control systems play a pivotal role in various engineering sectors, from Boeing aircraft to Boston Dynamics robots, and are essential for their functionality.