Keywords: Damping coefficient circle plain.svg Natural frequency circle of dumping coefficient zeta generated from Image Unit circle svg Own 2007-05-28 Mintz l Inkscape <math>\ s_ 1 2 -\omega_n\left \zeta\pm j\sqrt 1-\zeta 2 \right </math> <math>\ \zeta \cos \phi </math> Cybernetics |