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Re: OutputResponse issue

  • To: mathgroup at smc.vnet.net
  • Subject: [mg128926] Re: OutputResponse issue
  • From: "Eduardo M. A. M. Mendes" <emammendes at gmail.com>
  • Date: Tue, 4 Dec 2012 04:13:10 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • Delivered-to: l-mathgroup@wolfram.com
  • Delivered-to: mathgroup-newout@smc.vnet.net
  • Delivered-to: mathgroup-newsend@smc.vnet.net
  • References: <20121202095840.E142D6877@smc.vnet.net> <20121203090307.D04A96857@smc.vnet.net> <FB7BE4B8-6D7E-4447-BA44-5DC6363FB1DD@gmail.com> <CAEtRDSf=jsLicsa8u__V8OuXTcxrmy0=khiAM9Sp1Z8YWbYPNw@mail.gmail.com>

Many thanks.

Ed

On Dec 3, 2012, at 6:55 PM, Bob Hanlon <hanlonr357 at gmail.com> wrote:

> Recommend that the label for the second control be entered either as
>
> 	ToString[Subscript[T, s],TraditionalForm]
>
> or just
>
> 	Subscript[T, s]
>
>
> Bob Hanlon
>
>
> On Mon, Dec 3, 2012 at 1:29 PM, Eduardo M. A. M. Mendes
> <emammendes at gmail.com> wrote:
>> Dear Bob
>>
>> I have modified the functions you sent me and it seems that they work =
ok now.   Would you mind testing them, please?
>>
>> =
ClearAll[respPlt1];respPlt1[tmax_,k_]:=OutputResponse[TransferFunctionMo=
del[k/(k+2 s+3 s^2+s^3),s],UnitStep[t],{t,0,tmax}]//FullSimplify;
>> Plot[Evaluate[Table[Tooltip[Evaluate@respPlt1[30,k],"k = =
"<>ToString[k]],{k,0.53 {1,2,3}}]],{t,0,30},PlotRange-> =
All,Frame->True,Axes->False,FrameLabel->(Style[#,Bold,14]&/@{"t","Output =
 Response\n"})]
>>
>>
>> and
>>
>> ClearAll[respPlt2];
>> respPlt2[tmax_,k_]:=OutputResponse[TransferFunctionModel[k/(k+2 s+3 =
s^2+s^3),s],UnitStep[t],{t,0,tmax}]//FullSimplify
>> Manipulate[
>> =
Plot[Evaluate[respPlt2[tVal,k]],{t,0,tVal},Frame->True,Axes->False,PlotRan=
ge->{0,1.5},FrameLabel->(Style[#,Bold,14]&/@{"t","Output  =
Response\n"})],{{k,0.53},.05,2.5,.01,Appearance->"Labeled"},{{tVal,30,"Sub=
script[T, s]"},5,100,1,Appearance->"Labeled"}]
>>
>>
>> The key point seems to be {t,0,tmax} on the function that uses =
OutputResponse.
>>
>> Many thanks
>>
>> Ed
>>
>>
>> On Dec 3, 2012, at 7:03 AM, Bob Hanlon <hanlonr357 at gmail.com> wrote:
>>
>>> outResponse[k_: 0.53, t_] =
>>> OutputResponse[
>>>   TransferFunctionModel[
>>>    k/(k + 2 s + 3 s^2 + s^3), s],
>>>   UnitStep[t], t] // FullSimplify;
>>>
>>> Plot[
>>> Evaluate[
>>> Table[
>>>  Tooltip[
>>>   outResponse[k, t],
>>>   "k = " <> ToString[k]],
>>>  {k, 0.53 {1, 2, 3}}]],
>>> {t, 0, 10},
>>> Frame -> True, Axes -> False,
>>> FrameLabel -> (Style[#, Bold, 14] & /@
>>>   {"t",
>>>    "Output  Response\n"})]
>>>
>>> Manipulate[outResponse[k_, t_] =
>>> OutputResponse[
>>>   TransferFunctionModel[
>>>    k/(k + 2 s + 3 s^2 + s^3), s],
>>>   UnitStep[t], t] // FullSimplify;
>>> Plot[
>>> Chop[outResponse[k, t]],
>>> {t, 0, 10},
>>> Frame -> True, Axes -> False,
>>> PlotRange -> {0, 1.5},
>>> FrameLabel -> (Style[#, Bold, 14] & /@
>>>    {"t",
>>>     "Output  Response\n"})],
>>> {{k, 0.53}, .05, 2.5, .01,
>>> Appearance -> "Labeled"}]
>>>
>>>
>>> Bob Hanlon
>>>
>>>
>>> On Sun, Dec 2, 2012 at 4:58 AM, Eduardo M. A. M. Mendes
>>> <emammendes at gmail.com> wrote:
>>>>
>>>> Hello
>>>>
>>>> Can anyone help me with the following issue?
>>>>
>>>> Plot[Chop at OutputResponse[TransferFunctionModel[0.53/(0.53+2 s+3 s =
s+s s s),s],UnitStep[t],t],{t,0,10}]
>>>>
>>>> which returns
>>>>
>>>> OutputResponse::nsymb :  "0.0002042857142857143` must be a symbol. =
\
>>>> =91=99=98ButtonBox["",
>>>> Appearance->{Automatic, None},
>>>> BaseStyle->"Link",
>>>> ButtonData:>"paclet:ref/OutputResponse",
>>>> ButtonNote->"OutputResponse::nsymb"]"
>>>>
>>>> and several other msgs.
>>>>
>>>> I have tried a different approach
>>>>
>>>> restfmf[t_,k_]:=OutputResponse[TransferFunctionModel[(k 1.06)/(k =
1.06+2 s+3 s s+s s s),s],UnitStep[t],t];
>>>>
>>>> Plot[Chop@Evaluate@restfmf[t, 0.5], {t, 0, 10}]
>>>>
>>>> but got the same error messages
>>>>
>>>> What am I missing here?
>>>>
>>>> Many thanks
>>>>
>>>> Ed
>>>>
>>>>
>>>>
>>>
>>




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