J.R. 
Control Theory [PDF ebook] 

Concise highly readable book emphasising the concepts and principles that are prerequisite for understanding both traditional and recent control theory.The text is enlivened by a large number of interesting interludes that complement the main text.This second edition of Control Theory: A Guided Tour (IEE 1992) has been fully revised and enlarged and now contains an introduction to H infinity methods as well as a new chapter on Artificial Intellingence (AI) methods and a retrospective review of how control theory developed. All the topics covered can be taken further using the extensive annotated reference section.