Servomechanisms and Regulating System Design, Vol. 1 (Second Edition)

Abstract

THIS book is so well known that little need be said here to describe its contents and philosophy. In this second edition sections on root loci and analog computers have been added, and some reorganization and extension have taken place in the sections relating to Bode plots and error coefficients-the latter with an unfortunate typographical omission of a complete line of text.

NEW TECHNIQUE FOR INVESTIGATING FEEDBACK AND STABILITY OF A NUCLEAR REACTOR. EBR-II Project.

“…1 The relationship between feedback and the open-and closed-loop transfer functions is given in the definition of transfer functions. The denominator, 1 + G 0 (s)H(s), may be expressed as the ratio of two factored polynomials in s, the Laplace transform variable ico.…”

“…G 0 (s) always takes on values in the right half-plane; therefore H(s) must be the contributor of values that could cause the product to appear in the left half-plane. If the product equals the instability point (-1, iO), H(s) = -Go(s)" 1 . This allows an ex-: amination of the behavior of H(s) to determine whether the system is absolutely or conditionally stable.…”