A feedback control system is shown in Figure P7.18. The filter Gc(s) is often called a compensator, and the design problem involves selecting the parameters α and β. Using the root locus method, determine the effect of varying the parameters. Select a suitable filter so that the time to settle (to within 2% of the final value) is less than 4 seconds and the damping ratio of the dominant roots is greater than 0.60.

Transcribed Image Text:

Filter Process 4 FIGURE P7.18 Filter design