"Automatic control is a multidisciplinary subject covering topics of interest for electrical, mechanical, aerospace, chemical and industrial engineers. The objective of this text is to provide a comprehensive but practical coverage of the concepts of control systems theory. The theory is written in a straightforward uncomplicated way in order to simplify as much as possible, and in the same time classify, the problems met in classical automatic control. Each chapter includes an extensive section with formulas useful for dealing with the numerous solved problems that conclude the chapter. Finally, emphasis is given in the introduction of various simulation tools"-- Provided by publisher.