Graphical Method for Plotting Amplitude and Phase Angle of Transfer Functions of Dynamic Systems Without Factoring Polynomials

摘要

A method is presented for obtaining amplitude and angle plots for rational algebraic functions of an imaginary variable. Application of the method is illustrated by an example in which the frequency response of an automatically controlled aircraft is plotted. The method involves the use of templets but does not require the factoring of polynomials. Amplitude and angle plots of high- degree rational functions of an imaginary variable can be obtained more rapidly with this method than by analytical calculation or by methods involving the factoring of polynomials.