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## Re: test this in matlab for my please

 From: Doug Stewart Subject: Re: test this in matlab for my please Date: Thu, 30 Jun 2016 15:47:50 -0400

On Thu, Jun 30, 2016 at 3:18 PM, Nicholas Jankowski wrote:
On Fri, Jun 24, 2016 at 11:59 AM, Doug Stewart wrote:

Would someone try this on matlab and show me the plots, please.

s=tf('s')
T=.1

sys=1/(s*s*(s+1))
out2=c2d(sys,T,"impulse")
figure(1)
impulse(sys) %  should be the continuous time plot
figure(2)
impulse(out) %  should be the discrete  time plot

>> s=tf('s')
T=.1

s =

s

Continuous-time transfer function.

T =

0.1000

>> sys=1/(s*s*(s+1))
out2=c2d(sys,T,'impulse')

sys =

1
---------
s^3 + s^2

Continuous-time transfer function.

out2 =

0.0004837 z^2 + 0.0004679 z + 1.039e-18
---------------------------------------
z^3 - 2.905 z^2 + 2.81 z - 0.9048

Sample time: 0.1 seconds
Discrete-time transfer function.

>> figure(1)
impulse(sys)
>> figure(2)
impulse(out)
Undefined function or variable 'out'.

Did you mean:
>> impulse(out2)

Thank you.

I have now got the same numbers as Matlab, and will soon be finished this project.

--
DAS