PC 2

Question 1

What are the typical manipulated variables(MV) in DMC?

Answer 1

PID Block, cascade/ Feedfoward control, Setpoint/ratio

Question 2

Are disturbance variables (DVs) dependent or independent variables?

Answer 2

Independent

Question 3

Write down the equation for solving future MV’s regression

Answer 3

AªA🔺️MV= A^(t)E

Question 4

What are typical lengths if prediction horizon and control horizon in terms of time to steady state (TTSS)?

Answer 4

1.5 TTSS and .5 TTSS

Question 5

What are the benefits of a finite impulse response(FIR) model over a finite step response (FSR) model in terms of testing?

Answer 5

Data slice, unmeasured disturbance allowed

Question 6

If the equal concern error (ECE) for Cv1 is less than ECW for CV2 and both have the same engineering unit which CV1 is more important?

Answer 6

Cv1

Question 7

If a variable has a negative cost does steady-state optimization tend to minimize or maximize the variable?

Answer 7

Max

Question 8

Can move suppression factors be different for different mv’s

Answer 8

Yes