1) Consider each of the following PID feedback control process responses to a disturbance. Briefly describe or list - what specific concern(s) is/are less than ideal about the control response - what tuning parameter(s) you would change - how you would change the tuning parameter(s) to improve the control response. a) (6 pts) b) (6 pts) c) (6 pts) Process Variable Process Variable Process Variable 20 10 0 -10 -20 35 30 25 20 15 10 5 0 -5 0 100 80 60 40 20 0 -20 -40 -60 -80 mo Time (mins) 10 20 30 Time (mins) Time (mins) 10 40 10 50 15 60 15 d) Which tuning parameter is the biggest risk to use, and why? (3 pts)