V-shaped tank simulation

Hi!
I am a new LabView user and I need some help with simulating a tank-system.
I have 2 tanks, one vertical rectangular and one v-shaped tank. On the front-diagram I want two figures which indicates the level in each tank. The first rectangular one I find in LabView, but i cant find any v-shaped tanks which shows the level as it varies. Someone who knows how I can fix this?

As Ravens Fan pointed out, the answer is in control customization. Another option is to create an over lay that goes over the top of the indicator that has a V-shaped transparent cut in the middle (see attached).
The way I created this is using paint I created the basic shape (gray rectangle with white in the middle Vee). I then opened the bmp file in IrfanView (a neat editor that supports transparency) and saved it as a PNG. During the save, the program asked me what color to make transparent and I selected the white in the middle.
I then opened a blank VI, placed tank indicator sized it up a bit. I then dragged the png graphic onto the desktop and resized it to exactly fit over the tank. I colored the desktop to match the non transparent part of the overlay and TA-DAAAA - something that looks like a V-shaped tank....
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
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Attachments:
Vee Tank.vi ‏10 KB

Similar Messages

*how can i connect dsc tank simulator vi's to each other?*

I want to connect the output of one tank to the input of another so that when one empties the other fills,any suggestions how this can be achieved?I'm using the DSC tank simulator vi.Thanks

Heres what i have so far,thanks for your reply ben.
Attachments:
Tanks.vi ‏38 KB

Mac Pro 2008 with 8800 GT, hard freezes with screen savers/OpenGL. You too?

I have been experiencing random intermittent hard crashes of my "early 2008" model 8-core Mac Pro. Now I have finally found an easy reproducible test case (see below), and hope others will try it and post the results. This is a video-driver related crash that I have now duplicated with two different video cards.
The symptom is that my screen randomly freezes. The mouse moves, but there's no way to use the Mac[1]. Holding the Power button to force the Mac to shutdown is the only way out.
Usually, this occurs when I get to my office in the morning, or after the gym. That's because the screen saver is running. I found that the screensaver, other OpenGL/3D type applications, are what triggers this bug.
The bug seems to be with the graphics driver. Immediately before the freeze, messages like this are printed in the system log:
Mar 26 18:34:14 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception!
status = 0xffff info32 = 0xd = GR: SW Notify Error
Mar 26 18:34:14 Mac-Pro kernel[0]: 0000000c
Mar 26 18:34:14 Mac-Pro kernel[0]: 00200000 0000502d 00000470 00000000
Mar 26 18:34:14 Mac-Pro kernel[0]: 00000482 000002ac 00000003 00000003
Mar 26 18:34:14 Mac-Pro kernel[0]: 00000000 00000000 01be0003
Mar 26 18:34:14 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception!
status = 0xffff info32 = 0x3 = Fifo: Unknown Method Error
Mar 26 18:34:14 Mac-Pro kernel[0]: 0000000b
Mar 26 18:34:14 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception!
status = 0xffff info32 = 0x3 = Fifo: Unknown Method Error
Other errors like these also appear (the actual log output volume is too large for this forum):
Mar 26 21:15:15 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception! status = 0xffff info32 = 0x6 = Fifo: Parse Error
Mar 26 18:34:14 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception! status = 0xffff info32 = 0xd = GR: SW Notify Error
Anyway, finally I found on another thread about a similar issue[2], a recommendation to run Folding@Home program to trigger the freeze. They were talking about another Mac model, but sure enough, it triggers my problem every time. I downloaded the client[3], installed it, and then launched the app which gets put in the Applications folder. It doesn't even finish bouncing once in the dock before the Mac Pro freezes.
This is not a bug specific to Folding@Home; juding from the log messages and the effect, this is exactly the same crash that is intermittently triggered by the default Mac OS X screensavers (I use Arabesque, but I think any OpenGL screen saver does it). It's just that running Folding@Home is an easier way to trigger the bug than leaving your screensaver running for hours.
So, that is pretty unfortunate, right? I mean, not only can my new Mac Pro not sleep without losing all unsaved data (yes, I have the reboot-instead-of-wake problem[4], too, but that is another issue...) but it also crashes at random whenever the screen saver runs for a while, or somebody uses OpenGL programs. I have set my machine to never use the screen saver, but still.
So, first and foremost, my question for other 2008 Mac Pro owners with the 8800 video card is: does your Mac puke all over itself when you launch Folding@Home?
I just found it a little bit hard to believe that every Mac owner of the most expensive new Mac and the higher end video card will have these crashes. It could be, but it seemed far-fetched. So I tried some troubleshooting:
a
1.) I considered that I had a bad video card, so I got another GeForce 8800 GT and installed that. Still crashed.
2.) I disconnected my second monitor, and tried it with only one monitor. Still crashed.
3.) I booted from the pristine boot disk my Mac shipped with (10.5.1). Still crashed.
4.) I reduced the resolution on my 30" Cinema display to 800x600. Still crashed.
5.) Just to stave off the usual chorus of "try zapping your PRAM" posts, I zapped the PRAM. Of course, this did nothing (I don't think this has really fixed a problem since the 1990s...). Anyway, it still crashed.
6.) In doing all these tests, I disconnected all USB/FireWire peripherals.
7.) My Mac is totally up-to-date with Software Update as of Thu, Mar 27, 2008. Mac OS X 10.5.2.
I don't want to return this Mac to Apple; it is wicked fast and that really helps me with my work. But, the frequent crashing really is a productivity-killer.
So: does every 2008 Mac Pro owner with an 8800 GT have this problem?
(Note: there are lots of similar problems with other Macs and the new Mac OS X 10.5... I hope to specifically address this particular model and crash in this thread.)
If not, I will go to the next extreme step: pulling out some of my RAM. I have 12GB of RAM, and it all seems to work fine, no parity errors or anything. But I know sometimes problems don't happen unless there's "too much" RAM, "too high" resolution, and so on. But I would like to hear from others before I go banging on my precious DIMMs and riser cards.
Thanks for any information!
The next step will be to determine if this is just another unfortunate defect that affects ALL 2088 Mac Pros (in which case I would want to keep my fast Mac and wait for fixed drivers), or if perhaps just a subset of them have defective video cards that cause the driver to crash in this way (in which case I would want a replacement).
---------- NOTES: ----------
[1]: I can connect via SSH on the command line to the Mac. However, the GUI environment seems borked; opening apps or trying to gracefully quit them via AppleScript either does not work or really hard freezes everything, such that SSH no longer works either.
[2]: A similar (but perhaps different) issue affecting notebooks is discussed here, and there are some people with Mac Pros, too: http://discussions.apple.com/thread.jspa?messageID=6786960
[3]: The Folding @ Home client, which can be used to trigger this bug, can be gotten here: http://folding.stanford.edu/English/Download
[4]: The severe defect affecting many (most?) 2008 Mac Pro machines' ability to sleep without losing data is discussed in this other thread: http://discussions.apple.com/thread.jspa?threadID=1353551

Hello guys, thank you for the replies.
I do have more data at this point.
ujeezy: Those posts on MacNN and others like them did give some clues.
Jon BWFC: I think you are (partly) right that it's (partly) an issue with the driver. But I have confirmed with a fair degree of certainty in my case that it is a hardware issue too, likely with the video card and not the Mac Pro itself.
cmcom: I think it sounds like you problem is different than the one we're talking about (although who knows, the driver could be causing that too). The freeze we are seeing locks up the whole Mac, and no application crash report is produced.
I had another GeForce 8800 card, so I went through some exhaustive troubleshooting. I tested each card, installed in each of the 16x slots, booting from either my normal 10.5.2 boot disk or a clone of the pristine virgin system disk that shipped with the Mac, and tried to see if the Mac would crash.
Unfortunately this was harder than it seems, because:
a.) both my GeForce 8800 cards appear to be defective, but in different ways (see [1] and [2] below)
b.) In my testing, I thought I was seeing the crash sometimes, but later I discovered that there are different ways to make the Mac crash like this. That is, there are bugs in Mac OS X 10.5.x (probably in the NVIDIA driver) that cause similar crashes, and these bugs occur on all Mac Pro units and even other Mac models, without any hardware defects. Unfortunately, the Folding@home exercises one such bug.[3]
So the upshot is, all those times I was using Folding@home to test this issue were bogus, because Folding@home crashes any Mac Pro with the NVIDIA card, and crashes MacBook Pro machines with NVIDIA chips as well.
Argh! So I had to retest. It took a couple of days but I found another reliable way to crash my Mac Pro, more quickly than just leaving the screensaver on for a day or two: run this OpenGL virtual fish tank simulator[4] for 2-3 minutes. Unlike the Folding@home test, this did not crash any of my other Macs, and after exhaustive testing I found that it ONLY crashed the Mac Pro with one of the GeForce 880 cards installed, and not the other one. This was regardless of what slot it was installed in or what boot disk was used.
Whew! So, I concluded that indeed, there is a hardware defect in one of my GeForce 8800 cards which causes the machine to lock up. [2]
What made this problem much harder to deal with was the fact that Mac OS X (specifically the graphics driver parts of the OS, perhaps NVIDIA-specific) crashes with these same symptoms in other cases too. Like when you run Folding@home, or in some of these cases people are talking about with their MacBook Pro machines.
So, when there is a bona-fide hardware defect, it is really hard to isolate. (It took me like four days.)
The thing is, the defective NVIDIA card that crashes the Mac[2] was a REPLACEMENT card for the 8800 card that shipped with my Mac. I called Apple about the video artifacts I was seeing and they replaced the card.
I am now running the original card (and suffering the ugly video artifacts, but no crashes). At my own expense, I ordered an ATI card (the RADEON HD 2600 XT) and I will install that.
I hope someday to have my Mac work without graphics glitches or crashes. For now, operating (mostly) without crashes will have to do.
The original problem with this Mac continues, though: the video doesn't work correctly; it starts displaying visual artifacts after 1-72 hours of use[1]. That could either be because:
a.) a hardware defect in that video card
b.) a software problem with the driver/OS
c.) a hardware defect in the Mac itself
I strongly suspect A, but hopefully my buying a different card and testing with that will help further isolate what is wrong.
I am marking this thread "solved" because the specific issue I originally posted about has been resolved: the GeForce 8800 card causing the crashes is defective, and using another card fixes that issue.
[1]: The original GeForce 8800 card that shipped with my Mac Pro exhibited annoying-but-not-deadly video artifacts, which can be seen here: http://masonmark.com/wp-content/uploads/2008/04/bogusvideoartifacts.jpg
[2]: Apple replaced the video card, and that is when my deadly video-corruption-plus-frozen-Mac crash problem began. A screenshot example of that problem can be seen here: http://masonmark.com/wp-content/uploads/2008/04/crashedmac_pro_akashitball.jpg
[3]: The red herring in this case was the Mac OS X bug (seemingly specific to NVIDIA-equipped Macs including Mac Pro and MacBook Pro) that causes a very similar full system crash. This bug can easily be triggered by running the Folding@home version "6.10beta2" demo application. That is a serious bug, and since my employer is a Mac software company I reported this bug to Apple via the official channel. It is Apple bug number 5830772.
[4]: The OpenGL fish tank simulator I found, which would trigger the system crash caused by my defective 8800 video card (but would not crash any other Mac, or crash my Mac Pro with the other 8800 video card installed) can be found at: http://uri.cat/software/Fish/

Thinkpad Edge E440 Random Lags, Stuttering, Latency Problem.

Dear All, I bought Thinkpad Edge E440 almost two weeks ago. The problem is it randomly lags and stutter without reason. For example I was writing documents on Microsoft Word, plays music on foobar2000 and doing some light browsing (only few tabs) but randomly the music lags for 1-2 seconds. It doesn't skip, it lags or stutter (sorry I don't know the right term). Also sometime it took awhile to open a new tab on firefox web browser while usually it took instantly.
Another example is I play two online games, World of Tanks (WoT in short, a tank simulation game) and Ghost Recon Phantoms (a shooting game). When I play both game, the gameplay went smooth but randomly it lags or stutter like 1 second on more, then it went smooth again and then stutter again. The game doesn't became slow (which is called FPS drop if I am not wrong), the display just stop moving and mouse/keyboard become unresponsive during the lag/stutter period. On the other hand I also played WoT on my Pentium 4 PC and it went smooth without any lags, though of course the settings is inferior to my E440 laptop (Ghost Recon Phantoms can't be played on my Pentium 4 so I won't compare it).
Also sometimes the audio sounds 'spiky'.
As I searched online, people said that this is called/related to Latency problem and I should use LatencyMon to check it. After using LatencyMon I found several 'culprits' which causes big latency such as NDIS.sys, ACPI.sys, ATAPORT.sys, storport.sys, etc. I also tried to disable cpu throttling, power management settings and such but the problem doesn't go away.
I am sure that there is something wrong with my hardware because if its caused by settings such as cpu throttling, power management (which I think is software-related) then won't this happen to everybody? I mean, I asked a fellow E440 user and he said that his laptop is fine and my problems doesn't occur on him.
I have phoned Lenovo Customer Service. I was using Windows 7 Ultimate. At first they told me to do clean reinstall and install the drivers in the order the CS give me. I did clean reinstall 4 times to try different driver and program installation sequence to see if I might find a way to fix my problem, but I found no solution (I tried Lenovo CS driver install order on the last clean reinstall). I even tried running LatencyMon after clean reinstall before installing any drivers or updates but the LatencyMon still reports big, 'unhealthy' latency.
Lenovo CS then told me to do hardware scan on Lenovo Solution Center. There are warning on the Nvidia GT740M stress test but the CS told me that the results are good. His last solution is that I should go to a Lenovo Service Center to check for the problem there.
I moved to Windows 8.1 to see if the problem will be solved but too bad it's not. I have ran hardware scan for 5 times, there are two times(or 3 times I forgot) that there is warning on Harddisk SMART short self-test, 2 times warning on Nvidia GT740M stress test, one time scan finished with no warning. Even so, the end result for all the tests is 'Passed'.
I think the problem lies within my harddisk (or something related to data transfer) since when I browse my local drive in windows explorer sometimes it took a long time for the icons to load but sometime it just loads instantly. And I am not sure what that Nvidia stress test warning has to do with.
Also I only use the stock 4GB Ram. Could this related to the problem? Though when I look at Windows 8.1 Task Manager the memory usage rarely goes above 60%.
Last but not least. I plug a wireless mouse on my laptop which I use mostly for playing games, but in the end I switches between mouse-touchpad-mouse and so on during working too. Sometime my touchpad suddenly went unresponsive for few seconds but my mouse is still usable during that moment. Then after I move my wireless mouse, my touchpad become responsive again. Any idea why this is happening? I think this is probably because touchpad driver not perfectly compatible with Windows 8.1 as I don't recall having this trackpad issue on WIndows 7.
Can somebody help me? Does anyone else ever had the same problem as I do?
I am sorry for the really long explanation. Your response will be greatly appreciated.
Thank you.
-Tahta

Hi All, sorry for being a while for a long time.
First of all, I should say that I am not sure if my trackpad/pointing device problem is related to the lag/stutter/latency problem so I should have made two different thread instead. Sorry if anyone got confused with this.
@rallygion, the first OS I used on this laptop was Windows 7 64bit. If I remember correctly I don't experience the trackpad/pointing device problem back then, maybe I was just forgotten tho. I am using Windows 8.1 starting sometime before I made this thread. Now the problem has gone worse, sometime the touchpad & red dot in the keyboard won't work for a whole day so I must use external mouse.
At first I thought its compability problem with Windows 8.1 but now I think the hardware has problem too. However, the keyboard is fully functional.
@waqs, thanks for your suggestion! Unfortunately it doesn't solve the lag/stutter/latency problem.
@ghasan, our problem is quite similar except I didn't use the M.2 SSD. One thing I notice is the disk activity sometimes jumps to 100% when the lags happened.
The problem doesn't lie with the laptop specification is inferior. Fyi, when I play music on foobar2000 it took few second for music to start playing (foobar says 'starting playback..') while on my pentium 4 desktop (which I still use) the music plays right after I clicked the song.
Also, eventhough I've closed all my applications, leaving only music player and microsoft word/firefox, the music which is playing lags (randomly stops for a moment).
The lags also happened when watching videos. I played video on Media Player Classic, turned the statistics on. There happen to be frame drops sometimes. Not framerate drop, just frame dropped. I mean, I think framerate dropping has relation with computer power while in my case the frame just randomly drops, which 'damages' the video, not slowing it down.
I am sure that this is hardware-related problem. I am going to take my laptop to service center but not now since I am in need on my laptop now.
I will give update later when I have gone to the service center.

Print function causes VI to hang.

I am running two VIs concurrently one is an "operator screen" and one is a "test screen".
When I print the front panel of the test screen using the "Print Panel.vi" all VIs will hang for about 1 to 3 seconds.
This interuppts the data flow on the other VIs.
Is there a way to eliminate this interuption?
See attached example
Thanks,
Labview 6.1
3Ghz, 1Gb
Attachments:
Tank Simulation.vi ‏95 KB

Perhaps if the two VIs were running in different threads? Can't say for sure because you only posted one VI and that VI was missing all the subvis so I couldn't run the example.
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Can I set 4-bit color depth (16 colors) with a Unix command?

"M4" by Deadly Games, a Sherman Tank simulator, insists that the color be set to 16 before it will launch completely and run, but the least I can select on my G4 QS 2002 with 9.2.2/10.3.9/10.4.10 is 256 colors. Is there a way to choose fewer colors than 256 using Terminal and a Unix command?
TIA

Camelot wrote:
4-bit screen depths have not been supported in a long time. I don't know any option that will get you that setting.
I can't imagine any current game would require that setting. Even if it only uses 16 colors internally it shouldn't need the entire system to be set that way.
Can't argue with any of your statements or opinions.
BTW, do you have an answer/solution to the problem?

When i dont press the button i want the value start to decrease by itself

Dear all,
I am controlling a numeric control value in the front panel : I am pressing increase button to increase the value, but what I want is that when i stop pressing the increment button the numeric value should decrease by itseft (automatically) Please, I need your help.
Kind Regards from Turkey.
Have a nice day.

Salander wrote:
Firstly thank you for your reply, actually i couldnt try any of these,
Why not?
Salander wrote:
I have something in my mind but I am sure it wont work.
Then put something else in your mind! Don't spend thoughts on things that won't work.
Salander wrote:
I am not very good at programming, I want it to decrease Linearly to Zero.
What have you tried so far? Nobody is good at programming until they program for a while and learn new skills.
A car does not decrease the speed linearly to zero.
If you are controlling a real car with real hardware, it will decrease to zero automatically due to friction and wind resistance, so why would you need to program it?
If you are trying to simulate a car in software, create a software model that simulates a car based on parameters (current speed, mass, inertia, slope, wind resistance, drag coefficients, rolling resistance, friction, engine power, etc.).
I would recommend to open the example finder an look at some examples. have a look at the "tank simulation.vi", and substitute tank level with speed, or look at "vibration analysis.vi". See how the rotation speed decreases slowly if the velocity is set to zero.
Attached is a simplified version, hopefully it can give you some ideas. If this is for school, you need to make sure that you fully understand the reason for every little detail in the program and can explain it to you teacher if needed. Try to expand the functionality by adding a brake pedal, for example.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
Car Simulation.vi ‏15 KB

Dsc tutorial

Hi all,
I am following the DSC tutorial as outlined in the getting started with DSC manual. I am following the tank simulator example. I have got as far deploying the Periodic I/O server and the step I'm stuck at is as follows
3. Select Tools>>DSC Module>> Monitor Variables.
However, the Monitor Variables is not available.
The picture attached shows the options available to me and the instructions in the manual.
Can anyone tell what I should do? It seems something very simple but I can't find it!
Regards,
Leeser

Hi,
Where did you find this manual ?
If it was shipped with LV I guess there is no other one.
You can find several manuals here : C:\Program Files\National Instruments\LabVIEW 2010\manuals
Regards,
Da Helmut

Controller different Input in the same time in a real Scenario...(SIMULATION IN 2 TANKS CONTROLLER BY PCB BOARD)

Hi! I really need help....
I´m doing a simulation where I can controller the input and output with one external PCB, all is working properly (the communication) but my problem is, I can´t open where ever I want the different valves...I mean, I must wait until the process is finish...
The program is working with diferents process like this:
§Process 0:
Programinitialization. Tanks and pipes in zero state. Control for this state with “pump on” button.
§Process 1:
§State:
“ Pump on ” button istrue: Pump 1 isrunning, andTank 1 starts to be filled with water.
“ Pump on ” button is false: nothing happen, go to the next process
§Process 2:
This process is controlled from the “Control 1”button with is who control “Valve 1” for the discharge of water from tank 1 to tank 2.
§Process 3:
This processiscontrolledfromthe “Control 2 ”button with is who control “Valve 2” for the discharge of water from tank 1 to tank 2 if “Control 3 ” button is close or if “Control 3 ”button is open the water go out from the loop.
§Process 4:
This processgiveyoutheoptiontocome back totheprocess 1 ortotheprocess 2 dependingofthestate in process 3.
So my problem is I want run different processes in the same time, without having to wait out the current process is running....
this look like this:
and with the differents states...so I was trying to use a Statechart for try to improve the simulation....
like this:
But when I was tried to implement in labview with the statechart module i can't find the way to interconexión with this new module...
Because i need two differents regions...but i can't use the connexion between them....
Some new idea, help....all is welcome!!!
Thanks in advance.
Elena

Buenos días Alvaro,
Si, mejor en español
Si, me has entendido bien, exactamente es lo que me gustaria.
Empece por mi cuenta con labview y hay muchas cosas que se me escapan... Voy a implementar la máquina de estados a ver si asi soluciono el problema.
Muchas gracias!
Un saludo!

My recirculating pump in sub vi simulation link doesnt work in the second iteration .It opens for maybe half a second whereas i gave the time delay for 5 secs..plz help very urgent

Hi,
I have attached my simulation loop.In the model attached i hav eone main pump with constant rpm which drives the 5 smaller pumps and fills the tank at the same time.As soon as the tanks reach their 90% level,the valves of the five pumps close(SP1,SP2,SP3,Sp4,Sp5).After that the recirculating pumps opens for 5 secs of the first tank.As soon as the recirculation finishes,the drain valve(SV1) for tank 1 open and the volume goes to interim storage.This happens for all the remaining tanks.
My simulation works the first time,but when the second time the loop starts,it skips the recirculation pump even though i gave a time delay for 5 secs.Plz help ..I have attached the simulation.
Thanks,
Rami
Attachments:
Spatial Logic_2_Final.vi ‏223 KB

Rami,
I suspect that you have a race condition. The widespread use of local variables frequently leads to race conditions. Your subVI (Spatial Logic Sub_2.vi was not included) so I cannot run the VI. You have no way of knowing whether the subVI or the inner case structure will execute first, because there is no data dependency between them.
I think a shift register or a few and some dataflow thinking would allow you to eliminate the inner case structure, the local variables, and, probably, most of your problems.
Some of the SPi are indicators and some are controls. How are they used?
The last case of the inner loop retursn to Case 1. Would case 0 be better?
As for the second time through issue, it may be related to the Elapsed time function Auto Reset. From the help file: "Resets the start time to the value in Present (s) when the Express VI reaches the Time Target (s)." If more than 5 seconds elapses between the first time you use this and the next, it will exit immediately on the subsequent calls.
Lynn

Live for speed (racing sim) vs bt's packet shaping

For the past 1/2 a year I've been getting more and more annoyed at bt broadband. Now I understand that they have to packet shape because its their fair usage policy but now its started affecting this game, live for speed. Its a online racing simulator that becomes impossible to play (constantly unable to find server / excessive lag / disconnecting) until it becomes 00:00 and it suddenly plays fine again. The odd thing is that I play counterstrike: source and Team fortress 2 and they have no problems with packet shaping what so ever.
I thought bt was supposed to have gaming ports as high priority or something like that? Anyway, Live for speed uses different ports, depending on which server your connected to:
Master Port 8080
Server IP 192.168.0.107
Server Name (IHR)IRONHORSE RACING
Server Port 8888
Game Port 63392
The master port and game port stay the same, where as the server port changes. So if anyone can help, I will be very grateful!
Many Thanks
Ryan

Anything with 192.168.x.x is a local address on your own router, not elsewhere on the internet, usually.
You would be better off asking the question on LFS to be honest.

Packet filtering and traffic shaping during peak h...

I play the online game World of Tanks and an currently exteriancing severe lagg and disconnects, the problem does not appear to be with the game/service provider but with BT, i need to know does BT use "packet filtering" and "traffic shaping" during peak hours and if so why has it suddenly started.
This game use's P2P to keep the latency down for players so have been advised to contact BT and ask them are they limiting these types of connections.
Most games do not use these types of connections, but World of Tanks one does and again,been told BT just don't like them, due to the amount of connections they attempt to forge in order to have a stable latency.
I need to know if this is going to continue as pay to play the game, therefore would have to consider changing my ISP to virgin who dont use "packet filtering" and "traffic shaping" during peak hours .
Quick advice would be appreciated.

It's absolutely horrible. i turned off wifi all other devices and every other open program just to reduce my latency for 120ms to 80ms.
Still suffer from huge packet loss.
It would be absolutely horrible if they have started throttling worldoftanks.eu servers. Phone support is no help all they torld me to do is restart my router
I hope this is fixed soon. There are many posts on the WoT eu official forums and everyone that is effected appears to be a BT customer.
Some have mentioned it could be the damaged undersea cable.
I don't have any problems with torrents being throttled or anything like that. only worldoftanks.eu being throttled.

Tank Level Control with PID regulator

Hello!
I found a lot of examples regarding the simulation of a tank - level control with PID regulator. but I still have a dilemma.
I can't find the transfer function for the process, if you can help me it would be great because I'm stuck here...

Maybe you could ask some of you classmates?
LabVIEW Champion . Do more with less code and in less time .

Pid control coupled tank

Hye all......
i want to develop graphical user interfaces PID Controller to control level height and interfaces with coupled tank apparatus using NI-DAQ USB 6008......
i've found some good examples and i attached here.......i've already edit and there is 1 error to be solve.......
my problem is the simulation can't be run because there is some error
~SubVi 'IO Duncan .vi ubVI is missing.......
can you help me on how to edit these problem???? as long as the simulation can be simulate..........
thanx 4ur help......
regards.....
azlan......
Solved!
Go to Solution.
Attachments:
WATER TANK CONTROLLER 3.vi ‏25 KB

It sounds like that when you downloaded/saved the example code you have been working on you didn't download the SubVi 'IO Duncan .vi - so LabVIEW can not find it.
In the same way you have not included the PID subvi you are using so when I open your VI I get an error saying that it is missing.
David
www.controlsoftwaresolutions.com

Basic Instrumentation Simulation

Hello Guys,
I am kind of new to labVIEW programming, I want to learn about PID control regarding controll process. This is the kind of system I want to create,
- A simulation system that will simulate Level Control, Pressure Control and Flow control of a liquid in a cyliner.
- The incorporation of PID control, the system can be controlled by choosing Academic PID, Parallel PID or Ideal PID control structure.
- During the simulation the system will show the different PID time response such as :
a. Rise Time
b. Setlling time
c. % Overshoot
d. Damping Ratio
e. Oscillation Frequency
f. Gain Margin
g. Phase Margin
-The system must show different gauges that will show 'Real Time' Level, Pressure and Flow of Liquid in a Cylinder and the Process Variable Set Point and Controller Output to a Graphical Indicator.
The system is similar to
Examples >> Toolkits and Modules >> PID and Fuzzy Logic Control >> PID >> Simulation-Cascade and FeedForward Surge Tank Level.vi
Thanks in Advance to all who will help me, All insights will be appreciated and especially for an actual program
Email me here : [email protected]
More Power!

Thanks, I'll try to play with the connections and see if I'll be able to understand them.
But is it possible to incorporate the PID Parameter (Rise Time, Settling Time, Overshoot, Gain Margin, Phase Margin) on the example that I have uploaded? The Example I've Seen regarding the above mentioned parameters works only if the input to the 'Time Response Function', But on the simulation example that I mentioned, I don't see any TF input to the PID since it comes from the Plant to Simulator. Does the Plant Simulator works on a specific Transfer Function?
I've uploaded the 2 files that I wanted to combine.
Thanks
Attachments:
prctrlex.llb ‏1248 KB
controlsys_analysis.vi ‏499 KB

V-shaped tank simulation

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