所屬科目:台大◆電機◆控制系統(C)(含電路系統分析)
1. Figure 1 shows a non-ideal operational amplifier with negative feedback. Show the configuration of this circuit connection is unstable. (15%)
(a) What values of ωn and ξ correspond to the shaded regions? (6%)
(d)Find the closed-loop characteristic equation if the "output feedback" is u = -K•y . (6%)
6. Assume the closed-loop system of Fig. 4 has a feedforward transfer function given by Design a lag compensator D(s) so that the dominant poles of the closed-loop system are located at s = -1 ± j and the steady-state error to a unit ramp input is less than 0.2. (15%)