RME30002 Control and Automation 1/4 RME30002 Control and Automation 2/4 RME30002 Control and Automation 3/4 RME30002 Control and Automation tr d cos 1 , tp d , M p 100 e ( / 1 2 ) % , ts 4 n ( 2%criterion ) Log-magnitude curves, together with the asymptotes, and phase-angle curves of the quadratic transfer function 4/4