Manual of PID for transfer Auto smooth

Hello

I am using the PID command for a pump to ISCO syringe with manual Steplessly in automatic control, but I can't seem to make it work.

This shoot-syringe has an entry and exit pressure and is used to apply a force to keep the vertical movement of a constant of the sample. The amount of applied pressure is related to vertical displacement by an equation that appears in the attached VI. This VI aims to apply a variable force according to the displacement of the sample in order to try to keep moving 0.

Here is some general information on the pump that I use:

The pump is autonomous and can independently maintain pressure regardless of the LabVIEW PID controller. The pump only takes pressure of LabVIEW controls and maintain this pressure until another pressure control (I think that the pump integrated into the controller itself is a regulator PID.)

The problem I have is if I start the VI with the pump at a constant pressure (using the hand control with advanced PID VI) and crossing the wire to automatic control, the advanced PID VI immediately shows the pump to adjust the pressure up and then slowly bring it down to the steady state. This happens even if the hand control pressure is stable and identical to the auto set pressure. This following image details what I'm talking about:

The pump is in steady state, as shown in the diagram of pressure and the value in manual initially and then toggled mode on automatic control (designating the huge bump). I did it twice to show what happens when I go back. Manual automatic is without suddenly, because I used a local variable to constantly change the manual set temperature.

I did some troubleshooting and experiment and here are some of the results that I found:

1. when going from manual to automatic control, PID regulator sets the maximum pressure and then slowly bring it down to the set value

2 when it is cold from the VI in automatic mode with true to reset, the PID controller sets the pressure at a minimum and then slowly bring it up to the set value. This occurs even if the value of the original process is close to the set point (feed the actual value in the PID controller before execution also does not help.)

I also tried to play with the gains of PID in VI and found that if I turn off the 'I' and parameters "D" (together the two to 0), I no longer suffer from the huge bump, but the PID controller can bring the real set point value as there is always a lag.

I don't know if this is a result of bad PID tuning, but after the initial bump in the transition between manual and automatic, the PID controller seems to be able to maintain the correct pressure well.

The reason why I am using a PID controller rather send the pump controls (since it can independently maintain pressure) is because it is much smoother.

In the attached VI, there are a few side screws that are called that are specific to the pump and the LVDT used for detection of vertical movement. I do not think that they have an effect on why I don't get a transfer smoothly without jerking, so I only put comments to explain what they are doing.

I found another thread in forum with a similar question, but none of the solutions posted it seemed to have helped me. Here is the link to this thread:

http://forums.NI.com/T5/LabVIEW/PID-manual-to-auto-bumpless-transfer/m-p/3180609#M920098

Thank you.

Best regards

Victor

Your topology is not quite how we recommend that you make the transfer smooth. Can you do something like this?

Who will do manual setpoint pressure (units) and you need to update your gain, but it should follow. What is an option?

Tags: NI Software

Similar Questions

  • Help with the lasso and auto smoothing...

    I must have done something by mistake - all of a sudden when I make a selection with my lasso tool, click on out of her, photoshop automatically smooths my selection (makes it smooth as in an oval or circle, ignoring my detailed selection).  How to remedy this situation, or disable auto-smoothing (?)?  Thanks for any help you can give.

    Set the value of the pen to a few or zero in the options bar.

    Paulo

  • Is there a file management utility availabe for transfer files from Iphone to PC using the USB connection or wifi? Thank you

    Is there a file management utility availabe for transfer (image) files from Iphone to PC using the USB connection or wifi? Thank you

    You should be able to synchronize with a compatible Picture Manager, but you can also see the TouchCopy application.

  • How can I transfer my ISP settings (cable) on a disk for transfer to my new computer?

    Transfer


    How can I transfer my ISP settings (cable) on a disk for transfer to my new computer? am NOT computer savvy, so I need a specific answer.

    am using disks, there is no much to transfer >

    Thank you

    You want to just save your ISP for Windows Mail account settings?  WinMail in: tools | Export of accounts & save export on the desktop. Copy disc and place it on the desktop of the new machine. Reverse the import process in the new email client.
     
    Are you sure that's what you're looking for?

  • Where can I find documentation users manual or product for the HP 2311xi monitor?

    Where can I find documentation users manual or product for the HP 2311xi monitor?

    The only documentation that I could find was the specifications for the HP 2311xi IPS LED backlit LCD monitor. I hope this helps.

  • I'm looking for a manual form PDF for Windows Vista and one for Windows 7 ULT.

    Hi Tech, representatives and mods,

    I'm looking for a file PDF instruction manual for Windows Vista and one for Windows 7 ULT.

    I am trying to solve some problems on the PC of my mother for him and she not Vista operating instructions supplied with the installation of the plant on his Dell Inspiron 531.

    Also, because of irreparable corrupt software problems, Microsoft technicians have ordered me a Windows 7 installation disc that came in the mail, but there is no manual and I would like to know the procedures of installation and the new UI so I install it.

    Anyone know where I can download manuals of instructions PDF for Vista or Windows 7? ... can't find on the Microsoft Web site, but maybe I can't find them.

    Thanks for any help,

    NuMetro


    Hi Aziz,.

    I appreciate of course send you these links to the instructions for the installation of 7 and Vista... I will use them when trying to fix computer Vista my mother sick.

    But it turns out there are some out there in free download e-book/PDF manuals, and one for Windows 7 is quite comprehensive, edited by a guy named Rich Robinson on http://mintywhite.com/books/ ... See the response, copied below, I got "JacK MVP" when he replied to my post on the Windows 7 forum...

    _________________________________________________________________
    Jack MVP MVP Moderator
     

    Hello

    Look at this page, http://mintywhite.com/books/

    You need to register, but it's good and free courtesy of Microsoft MVP.

    _________________________________________________________________

    It's a little complicated to register on this site... I click on a link to a book, then on the page following, I get my email address, then I get an email confirming my registration, by which I can get an e-mail newsletter every day with a new password to download e-books. If the newsletter has already been sent to this day there, I click a 2nd link in this email in order to receive another email with the password... then by clicking a link in the 2nd e-mail, I get to the page where I did enter the password... so I can download e-books... as easy as 1-2-3... 4-5-6-7-8-9-10-11...

    TIP: the password appears to be the same thing every day, or was yesterday and today it's 'mintywhiteBooks '... How sneaky.

    For a minute there, I thought that this site was a kind of lure because on the page "to subscribe/instructions", where I get my e-mail, there are 2 jpeg images that resemble password fields and links, but they are not... I'm not sure of what those who are for.
    This mintywhite.com seems to be quite the site for amateurs and Windows technicians.
    Thank you
    Enjoy,
    NuMetro

  • How to set an IP address manually and manual DNS servers for my printer HP Photosmart 7525?

    Cannot print.  EU of evil when the printer was initially put in place.  "Happytohelp01" Assstance solved the advised me; a manual IP address unBalayage DNS servers for the printer.  I did not write the information and now my printer is not working (it only worked for about a month), now nada.  I've had at the start of the connection to the web server problems - now its doing the same thing, but I don't know what IP Address and DNS to use.  Please help if you can.

    Hi @LaceyNo1,

    Welcome to the HP Forums!

    I understand that you are wondering, how to set an IP address manually and manual DNS servers for your printer HP Photosmart 7525. I am pleased to see that for you!

    After some research, I think I found the post, my colleague @happytohelp01, helped you with. In this post, Re: Photosmart 7525.

    Hope this is what you are looking for and have a good day!

  • How to open the manual mini port for vpn connection in win7?

    How to open the manual mini port for vpn connection in win7?

    Hi Andrew,

    Your question of Windows 7 is more complex than what is generally answered in the Microsoft Answers forums. It would be better suited to the TechNet community.

    Please visit the link below to find a community that will provide the support you want.

    http://social.technet.Microsoft.com/forums/en-us/w7itpronetworking/threads

  • Why am I being charged more for my auto-renewal that I signed for? And why am I being charged more than if I canceled and then registered again?

    Why am I being charged more for my auto-renewal that I signed for? And why am I being charged more than if I canceled and then registered again?

    One year price Intro http://forums.adobe.com/thread/1448933?tstart=0 can help

  • Best books/manuals the user for PP and AE CS6?

    Hello

    Just upgraded/software to CS6 PP1.5.

    Looking for suggestions on books/manuals the user for each program.

    Thank you

    John

    I can't offer a book, but there is a list of online tutorial in the #3 http://forums.adobe.com/message/2276578 message

  • I tried to download for kb973636 auto update and got an error code 646, then I've done a manual download and got an error code 1327 showing invalid drive: o:\ location, how can I change the drive to c:\ drive.

    I had trouble to download the kb973636 update as it failed and I got the error code 646.  So I did a manual download to computer and got the error code 1327 telling me I have invalid drive o:\ and not c:\ drive somewhere.  How can I fix it and it will not happen in the future?    Ronald E Fish

    Hi captainron57,
     
    Welcome to Microsoft answers community forum!
     
    You can follow these links for a detailed resolution:
     
    http://social.answers.Microsoft.com/forums/en-us/vistawu/thread/4a971145-86ca-4B80-A545-93a36536d690
    http://social.answers.Microsoft.com/forums/en-us/vistawu/thread/6e716883-7af4-4A9F-8665-2f4dd57eee8d

    Post back with the State of the question, for additional help or even if the issue is resolved.

    Hope this information helped!

    Thank you, and in what concerns:
    Aziz Nadeem - Microsoft technical support.
    Visit our http://social.answers.microsoft.com/Forums/en-US/answersfeedback/threads/ Microsoft answers feedback Forum and let us know what you think.

  • How to manually select automated snippets of text (for example auto numbering)

    Hello

    I tried to look in the help, don't get anyt'ing

    I have a few occasions where I need to change the color of the text to white, because of the dark background. I created a character called 'Negative' Style where I simply put the text in white color.

    So far so good. However, I am not able to select and apply the style to the automated elements of paragraph as paragraph numbering styles for example.

    I can only choose "Lorem ipsum" a "(1). Lorem Ipsum', you know. Is it possible to do without having to define a set of new paragraph for the other color styles?

    Thanks in advance.

    (It's funny that Andreball has an avatar of the shadow and kdubbie has a soccer ball...)

    I'm sure that Andreball means in fact the bullets and numbers, but he wants to change the style of the appearance of certain portions of the document simply select the areas in question and choosing the character Style > negative, without having to go through several dialog boxes and redefine styles.

    As far as I know, there isn't a way to make what is sought here. To change the background of the bullets and numbers, it is necessary to change the style of characters applied, and which can only occur in the chips and numbers options.

    Now, it is not necessary to create a new paragraph style. You can instead go to menu drop-down in the paragraph Panel and choose chips and numbers and then change the character Style here. I guess that helps just a little bit... and you can set a keyboard shortcut for it...

  • playlists for transfer from one library to another on the same computer

    I have 2 iTunes libraries, each in a separate iTunes folder on a single computer.  A library contained musical; the other doesn't have any content.  Also, I have 2 iPod classic I want to be able to synchronize separately for each library.  To this end, I want to transfer playlists selected library 1 2 library.  Is it possible directly on the computer?  If so, the best way to do it?  Otherwise, it seems that my next recourse is limited to manually synchronize playlists selected library 1 iPod 2 & then iPod 2 2 library, assuming that this is feasible.  Any contribution will be welcome.

    You need to export the playlist with the music files to a location (your office for ex), and then import it into the second reading list.

    https://support.Apple.com/kb/PH12145

    https://translate.Google.fr/translate?HL=FR & SL = in & u = https://support.Apple.com/kb /PH12145 & prev = search

    ("manually synchronize playlists selected library 1 iPod 2 & then iPod 2 2 library, assuming that this is doable": it is not easily achievable)


  • Manual record levels for external microphone HF R600?

    Recently, I bought this camera to record clips video and audio of my daughter playing the piano.  She would like to create an audio CD to give to family members.  We use a micro external pro rode video mic.  The problem is that all audio is recorded at the same volume.  This means that all parts of the music that are softer or the lounder when registering to go unnoticed.  I was hoping that the device was set to auto mode, but I can't find out anything.

    Any help is greatly appreciated - thank you!

    Do you have a copy of the instruction manual?  Page 234 in the Appendix seems to describe how to disable the audio level automatically and adjust the volume manually for external microphones.

    VIXIA HF R600 Instruction Manual download

    I hope this helps.

  • Come on Apple! : why Itunes wants to erase my iphone to manually manage music for me

    Hello

    I wonder if there is a way to activate the option to manually manage music without the synchronization and erasing all the info on my iphone 6. It is terrible because I can't understand how to do this and I do not use my computer to store all the music on my iphone, and I don't know how to backup all my pictures and etc. in my computer. I have activated this option before on another device and was angry because when Sync I lost all my photos including images of my great-aunt who could now be passed away while she was struggling with cancer was given a little time to live. I am currently using a third-party program called AnyTrans to add titles to my iphone but I want to be able to do simply in itunes instead. That said, does anyone know how to enable this option for those of us who don't do the thing whole sync? As is - this does anyone have ideals about why itunes forces you to synchronize when you change the settings?

    Appreciate any help and advice given here. Thank you!

    Hello

    For the sake of Apple, you can only toggle a device of automatic synchronization to manual management without removing the media on this issue when it is connected to the library, with which it was previously synchronized. See recover your iTunes from your iPod or an iOS device library for general steps to recover all media on a device in the local library, after what you can afford wipe and reload it. If you choose to manage manually in the future you should keep all of your media in a local library that you have backed up so that you can restore your device or replacement as and when the need arises.

    TT2

Maybe you are looking for