A pure propational control is to be added to a process closedlloop: 1) Block diagram 2) Find expressions for the transfers functions, remember: closed-loop ploportiod control 3) Hinmum value of controlles gain Kc, require to give a stuble dood-loop lespore to a distubance? (ploces is unestable) 4) Maximum controller gwin that avoid oscillatory response? 5) if we use the Kc of part 3 , which is the steady. stite gain on a distuibance