For more than twenty years, Modern Control Systems has set the standard of excellence for control systems books. It has remained a bestseller because the authors have been able to take complex control theory and make it exciting and accessible to readers. The book presents a control engineering methodology that, while based on mathematical fundamentals, stresses physical system modeling and practical control system designs with realistic system specifications. Two new features have been added to the eighth edition to complement the book's strong integration of design and analysis. The Sequential Design Problem feature, using a disk drive as the example, highlights the main themes in each chapter and how they impact the design of a control system. A Continuous Design Problem is included at the end of each problem set to give readers an opportunity to model, analyze, and design various types of controllers for a tabletop machine tool as they proceed through the chapters. The book provides a clear exposition of the basic principles of control system design techniques using frequency - and time-domain methods as well as the state variable method. Recognizing the importance of computer-aided design and analysis, the book integrates MATLAB topics, examples, and problems in each chapter.