Units of transfer functions

Similar Questions

• PID regulator takes advantage of the transfer function of the model sys

  Hello

  I need to find a controller for my system...

  I have my system as transfer function model and I want to find the pid of the gains of this system by using its transfer function!

  All block in labview 8.5 to do this step?

  Concerning

  Hello

  Maybe this link will come close to the feature you're looking for:

  Analytical design of PID VI

  http://zone.NI.com/reference/en-XX/help/371894E-01/lvctrldsgn/cd_pid_design_pal/

  This function was introduced in LabVIEW 8.5 in the Control Design and Simulation Module. There is a limitation, because this process analysis based on one or more transfer SISO (single Input Single Output) functions. The help article above comes from aid in 2010. Below, I've included the 8.5 reference:

• problem setting up transfer function

  Hello, everyone. I am a new user.

  I have no problem with the configuration of the equation of the transfer function.

  He could not be the change

  

  Please help me solve this problem. It is therefore urgent. So, thank you very much for the repply.

  NB: I attach the printscreen of window problem

  Hi all.

  Sorry I just answered this now.

  Thanks for the answer.

  But I have solved this problem. The problem is the software that I installed broke. So, I download the installer again.

• How to estimate the actual measurements (partially known) data transfer function

  Hello

  I would like to find the transfer function of my system in real time. I put in the attachment as test.txt (time, stimulus, response). I have problems to find the transfer function of my system. Basically, I send a signal to the pump piston and I drive the piston engine, then I read the flow of the flow meter. The flow, we can write as a derivative of the motion multiply surface of the plunger Q = dh/dt * A. It should be noted that begins more than 90 degrees (estimation1.vi watch in phase). As in my system is a derivative of my transfer function must be something like (for example, the second order) b2s ^ b1s 2 ++ 0 / a2s ^ 2 + a1s + a0 and etc. I did a vi but Labview can not find something reasonable. Maybe someone has an idea to improve my vi?

  Thanks for any help.

  Best regards

  Kamil

  
  

• How to define the initial Conditions of transfer function

  Hello

  I need set the initial of my transfer function value so that it starts to 0.7778 instead of from 0.

  [My transfer function is 1 / (3.3 s + 1)]

  I found this link, but still he somehow does not give the right output I desired because it has not started to 0.7778.

  http://digital.NI.com/public.nsf/allkb/0D8F3397666F295F8625773B0055F1B9

  Could someone help me with this issue?

  Farid Ali

  Ridwan,

  Since you have a SISO system, you can try using the screw "Design Control" to convert the transfer function after normalization of State-Space model, you can use a function 'hidden' in the design of control that are used to calculate the original terms of your system. This function will calculate the necessary value to States in order to obtain the desired result, based on the model. If your initial release is zero, the Conversion.vi cd_IC will give you an empty model and to avoid an error, then change its value to zero.

  

  As an attachment, you have an example and a screw that you allow to use it in 2009 LV.

• Using Multisim 11.0, unable to find a transfer function analysis

  In my college manual, that I'm supposed to run an analysis of transfer function in Multisim, which is supposed to be located in the analysis of the menu drop down, but I can't find this option analysis.

  Not all versions of Multisim include analysis of transfer functions, in particular the student version does not have this analysis.

  You can see a list of the differences between the versions of education here.

• Specifying the numerator and the denominator of the transfer function equation

  Hello

  I'll simulate the second weirdest problem. But I have the problem when I try to set the transfer function 2nd odder

  using the remote. I have attached the VI in this mail.

  any information in this respect very much appreciated

  thanking you

  Amri

  Good morning ludo,.

  I think that what you want is to use the CD build special TF model VI as shown below

  

• Problem of transfer function

  Hello
   
  I created this function to transfer in Labview. But I realized that a small entry value (in my case, I used 0.0014) will produce a different result to compare with that of Matlab. I couldn't understand what the problem is. Could you help me in this?

  Attached are the LabVIEW and Matlab files I created.

  FYI, I used 2009 LabVIEW and Matlab R2007b.

  Thank you

  The input parameters used by the control and the Simulation Module does not solve the problem you have. This value, which "walk" down and swinging is wrong because you only have a first-order model, and as you know, you should expect a first order response, similar to a capacitor taken from a step response. If you change the maximum size step at 0.01, you should get the answer expected that converge to 0.0014.

  This shows how simulation can be misleading if you do not have an idea of what to expect from him and, above all, no simulation cannot substitute for knowledge or intuition of the expert developer. You should always validate your simulation results and convince yourself that you are getting good results, any package or seller you have.

• Error in Mathscript (FOPDT transfer function)

  Hi all, I'm writing a first order system and dead time in the mathscript unfortunetaly I found that it displays an error (please see attachments), someone has an idea or an approach to write a transfer of FOPDT mathscript function?

  Thank you veery much.

  Yet one thing... This might be easier if you go 100% graphic...

  Below is a snippet and you can simply drag and drop into your LabVIEW 2011 diagram and this will copy this code in it.

  

• "Windows Easy Transfer" function is NOT easy!

  I bought a new laptop and decided to try to move the old data by using "Windows Easy Transfer". There's NOTHING easy about it.
  "I created the MIG file, but when I try to drag it onto the external hard drive it gives me the following error message: the file is too large for the destination file system.

  I tried two different hdd with a lot of hard disk space. Both gave me the same error message.
  I want a solution to this nonsense.
  Thank you

  Uh, you're welcome?

  Please report all follow-up answers to your new thread: http://social.answers.microsoft.com/Forums/en-US/w7files/thread/c07b5cde-eee7-4380-9576-904521e6aad1

  ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

• Nations United can transfer photo from attachment to items photo 14

  I use elements 14 having upgraded from 10 items arrived a number of pictures as an attachment when running 10 items a pop-up window appears in Adobe saying they had detected some photo entries and I want to include them in the catalogue of Adobe.  After accepting the pictures would appear in the catalog as directed unfortunately I can't get the pictures to transfer using element 14. However, they find their way in 'Documents', but no matter what I try, I can't have their catalog of 14 elements. Please explain where I'm wrong"

  You can only be taken the pictures folder.

  From the Organizer, go to the menu:

  File > watched folders

  Click the Add button to choose Documents.

• Control & Simulation - CD draw Transfer Function equation - update problem

  Hello!

  Initial start-up - the front looks like in below.

  

  When I run the application - sweep for some values, and then the watch front-

  

  Equation is drawn with the second to the last value and not with the last of them?

  If the request is repeated - then the façade shows the following results

  

  Could someone help me please?

  That!

  Vasco

  Hi Barp!

  Thank you... it really works...

  

  Best regards!

  Vasco

• How to create a filter by using the function of transfer mathscript in labview

  Hi all

  I am currently designing a filter in labview using a Mathscript loop. The filter can be represented in the transfer function. I have attached the equation of transfer as well as its value function and the desire of graphic amplitude vs. frequency should I got to it. Also, here is the transfer function written in Matlab.

  B1 = tf ([57.5221845], [1 51,017077 205.1868]);
  B2 = tf ([1 0], [7.6991]);
  B3 = tf ([1 0], [14.32433403]);
  B4 = tf ([1 0], [137.6017]);

  F = B1 * ((1+B3)/((1+B2) *(1+B4)));

  Plot (F)

  I also change the encoding as Labview Mathscript does not support Matlab coding "tf" as function of transfer to "bilinear".

  I am facing problem to are:

  (1) cannot display the graph of the labvie filter.

  (2) cannot have sinewave as an entry in the filter.

  (3) the output can not be display in graphical form.

  We hope to have the earlier response of you guys. Thanks in advance

  I have attached the version 8.5

• Implementation of a transfer without control and the Simulation Toolkit function

  Hello people,

  I'm working on the implementation of a control system for a thermal cycler. And for that, I need a regulatory PID feedback loop and a feedforward controller that reduces the load on the feedback control loop. We were able to implement the PID loop without the box tool (using shift registers and others) but I don't know how to implement a controller feedback whose transfer function I [(35s+1) /(0.0001s+1)].

  Can I use a formula node and to implement with a C code? I don't know how to do this in c either.

  Any help is appreciated!

  Thank you!

  sirius18

  Hi sirius18,

  You can use the formula node to perform the calculations that you mentioned, but it is not C code run.  However, the syntax is similar.  Here is some information on put a formula into a knot of the formula:

  Formula node (help documentation) - http://zone.ni.com/reference/en-XX/help/371361H-01/lvconcepts/formula_nodes/

  Example - http://zone.ni.com/devzone/cda/epd/p/id/3058

  For those who prefer C, we can write their code, create a DLL and then call their C function using a knot of library function call:

  Call library function node (help documentation) - http://zone.ni.com/reference/en-XX/help/371361H-01/glang/call_library_function/

  Tutorial (presentation) - http://www.ni.com/white-paper/3009/en

  Example - http://zone.ni.com/devzone/cda/epd/p/id/1513

  I hope this helps!

  Kind regards

• transfer with exponential factor function?

  Hi all.

  I want to implement a transfer function model of process in labview with late Td.

  S = k. exp(-s.Td)

  ------------------------

  T.s + 1

  I try function block we transfer of PID toolskit. but there is no option for the exponential factor.

  Can someone help me?

  Thank you very much.

  You have the LabVIEW Control Design and Simulation Module? Using this module, it becomes VERY easy to create this transfer function.

  What is the purpose of your simulation? Search, class assignment, related work?

  What version of LabVIEW you have?

  Thank you