Question

Output Response Change until oscillations are constant Set point and Kincreased to 3 oscillation obtained NMAA Ker-3 inot enough, Kr increase Ker decrease Criticali Pr 10 sec Ker = 3.5 period Kr 3.5 Ker = 4 (too much)e : (sec) 10 sec 20 sec From the graph find out Pcr and Kcr Critical time Pcr- 10 se Critical gain, Kcr 3.5 TA Ker P- Controller Pl- Controller 1.2 Kor PID- Controller Td P controller 1.7 Pl controller 0 2.2 12 833 PID controller 2.05 = 1.25

Answer 1

Kcr (Critical gain) = 3.5 Critical time (Tcr) = 10 sec