Frequency response# The Nyquist criterion, Bode plots and stability margins, sensitivity and the Nichols chart. Nyquist’s stability criterion (1932) Nyquist's stability criterion (1932) Bode’s gain and phase margins (1940) Bode's gain and phase margins (1940) Bode’s sensitivity integral (1945) Bode's sensitivity integral (1945) The Nichols chart (1947) The Nichols chart (1947)
