This book aims to make the relationships in control loops understandable to the reader, without making the mathematical considerations too complicated. It is targeted at students in vocational high schools, as well as in technical schools and universities of applied sciences. However, the book is also suitable for corresponding training events and, thanks to the numerous examples and exercises with solutions, for self-study. After working through the book, the reader should be able to analyze a control path according to control engineering criteria and select and adjust an appropriate type of controller. An additional chapter covers fuzzy logic in control engineering.