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Topic: Temperature control-step response for a transfer function
Replies: 1   Last Post: Dec 27, 2012 3:46 PM

 Messages: [ Previous | Next ]
 Danielle Posts: 8 Registered: 12/11/04
Temperature control-step response for a transfer function
Posted: May 16, 2005 10:21 AM

Hi,

Having some real problems creating the correct step response figure for the following transfer function:

G(s) = e^(-ts) * H/(1+Ts)

so far I can create the step response figure for a simplified transfer function G(s) = H/(ts+1)(Ts+1) by;

in matlab main window:
H = 2.08
T = 0.45
t = 0.12
gopen = tf([H],[t*T,T+t,1])
gclose = feedback(gopen,1)
step(gclose)

however i'm not sure how to create 'gopen' for the first more accurate transfer function??

i've tried the following but I have no idea which one (if any) is correct!

gopen = tf([exp(-t),H],[T,1])

gopen = tf((exp(-t))*[H],[T,1])

and

gopen = tf([exp(-t)],[T,1])

any help would be really appreciated.

Thanks

Dan

Date Subject Author
5/16/05 Danielle
12/27/12 res5