Control systems design bernard friedland pdf

Design is an interplay of science and art-the instinct of using exactly the right methods and resources that the application requires

It would be pre- sumptuous to claim that one could learn control system design by reading this book

The graphical methods are devices for elucidating the dynamic characteristics of f134 CONTROL SYSTEM DESIGN Figure 4

8 Single-loop feedback system return difference T (s) = 1 + K G ( s )

(The connection between frequency-domain methods and communication systems is a possible explanation of why the development of control theory took place and still continues mostly in academic departments of electrical engineering, even though the electrical hardware in many control systems is all but negligible