Question: 21) Consider the unstable process transfer function Gp=s2K and the characteristic equation of a simple control system: 1+GcGp=0. (a) What is the stability criterion if

 21) Consider the unstable process transfer function Gp=s2K and the characteristic

21) Consider the unstable process transfer function Gp=s2K and the characteristic equation of a simple control system: 1+GcGp=0. (a) What is the stability criterion if we use a PD controller? How is it different from a proportional controller? (b) What is the stability criterion if we use a PI controller? (c) Sketch the root-locus plots for parts (a) and (b). (d) Derive the ultimate gain and the ultimate frequency in parts (a) and (b)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Chemical Engineering Questions!