• Support PF! Buy your school textbooks, materials and every day products Here!

Transfer Function

  • Thread starter khedira
  • Start date
  • #1
12
0
U(s) is my input, Y(s) is the output. I have two plants, G1(s) and G2(s). Between these two plants, i have a disturbance input, D(s).

Am i right to say Y(s) = U(s)G1(s)G2(s) + G2(s)D(s)?

If that is the case, how can i get the overall transfer function Y(s)/U(s)? Please advise. Thank you.
 

Answers and Replies

  • #2
rock.freak667
Homework Helper
6,230
31
I believe if you move D(s) to the left, you will now have D(s)/G1(s) in parallel with G1(s) and G2(s).
 
  • #3
12
0
I believe if you move D(s) to the left, you will now have D(s)/G1(s) in parallel with G1(s) and G2(s).
Hi rock.freak667,

sorry i don't get you. do you mean shift the disturbance D(s) to the left of G1(s) as in in the block diagram?

or do you mean the equation Y(s) - G2(s)D(s) = U(s)G1(s)G2(s)?

please advise. thank you.
 
  • #4
rock.freak667
Homework Helper
6,230
31
Hi rock.freak667,

sorry i don't get you. do you mean shift the disturbance D(s) to the left of G1(s) as in in the block diagram?.
Sorry I was not clearer, I meant shift the disturbance to the left of G1(s) in the block diagram.
 

Related Threads on Transfer Function

  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
20
Views
3K
  • Last Post
Replies
8
Views
2K
  • Last Post
Replies
0
Views
2K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
1
Views
5K
Top