The book is intended for students and PhD students in the field of automatics, mechatronics, robotics, digital or analog feedback control. Par-ticullary, in NSTU (Novosibirsk, Russia) it is intended for the students enrolled in the educational field 27.03.04 “Control in Technical Systems” in the course “Computer-aided design tools and control systems” (for Bachelors in their 4th year). It includes training materials and guidelines for selfassessment (questions for self-testing). The basic knowledge of previously studied mathematical disciplines is required for successful study of this course. The book is prepared due to the financial support from the European Foundation Erasmus+, projects KA-107A and SmartCity.