. A two inputtwo output process has the following RGA:

= [1

.5 2

.5

2

.5

1

.5]

Assume that the MVSISO system is tuned for stable feedback control with both loops

closed.

Case 1: 1 is paired with 1 (loop 1) and 2 is paired with 2 (loop 2).

2.1 What happens if loop 2 is opened? Why? Must loop 1 be retuned? How?

Case 2: 1 is paired with 2 (loop 1) and 2 is paired with 1 (loop 2).

2.2 What happens if loop 2 is opened? Why? Must loop 1 be retuned? How?