question 1:2. A second-order process with a time constant of 10 is controlled by a proportional controller (K p= 4.5) as shown in the drawing (Figure Q2). It also comprises a measuring element to...

p= 4.5) as shown in the drawing (Figure Q2). It also comprises a measuring element to close the loop with a time constant of?m.

1. 
   

   (a) For what range(s) of?mwill the resulting system be stable?(10)

   
   


2. 
   

   (b) What practical arguments might be used to restrict the range(s) of

   
   

   acceptable?meven further?(4)

   
   


3. 
   

   (c) If we select a proportional-derivative controller whereith?D=?mis

   
   

   used, how would your answers to (a) and (b) be affected?(6)