Help me in my mini project about dc motor control using labview
hi,
actually the idea is that using pid controller in labview.. controlling motor.i.e giving a setpoint to pid... n checking whether motor is running accordinly using a sensor.. i.e feedback n/w... i dnt knw hw to proceed.. can u help me with the circuit diagram
Hi swats,
"i dnt knw hw to proceed.."
I suppose you mean "I don't know how to proceed..", something is wrong with your "o" key
I would suggest going to the library of your school or university and get a book on basics of electric devices. There you will find a lot of hints on how to measure speed of motors and how they work. In fact your question covers several seminar hours in "Electrical Measurements" course at university...
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome
Similar Messages
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Really need help (motor control using labview)
hi all readers,
im new beginner. really need help for my project. i've been assigned to monitor/control motor using labview 8.5 (using NI DAQmx). the problem is, the techinician told me that i cant use 3phase motor with this card. things that i need to displayed using labview is :
torque
power
current
voltage
speed
really appreciated if readers can help me with this:
wut type of motor shud i use that compatible with NI DAQmx
thanks a lot.Hi fauziana,
NI data acquisition devices are primarily designed to take measurements, so it's a good idea to measure the signals that you have mentioned with a DAQ device.
You also can use DAQ devices for control tasks, but for reliable and deterministic control behavioryou typically need to use a real-time operating system (not Windows!). If you want to learn more about the pros and cons of using DAQ devices for motion control tasks, please refer to these threads. Still for standard motion control tasks it's much more efficient in terms of development time, to use a dedicated motion control device for the motion control part of your application.
In general the control part is independant from the motor type, as these devices only generate control signals (+/- 10 V). There are many power drives available, that accept this type of control signal and you should select your motor according to the requirements of your application.
For a more detailed system consulting, please contact your local NI branch. To select the products that fit best to your application requirements a face to face discussion is much more efficient than a discussion forum thread, because there are a lot of parameters that need to be taken into consideration. If you tell me in which country you are living, I can provide appropriate contact data to you.
Thanks and kind regards,
Jochen Klier
National Instruments -
My/keyboard/green/light/goes/on/and/off./The/space/bar/and/caps/lock/keys/do/not /work/.I/have/100%/battery/life.I/show/connected/to/bluetooth.Anyone/know/the/ap proximate/life/of/a/keyboard?Mine/is/about/4/years/old.Using/an/iMac/about/4/yea rs/old,too.
Could be an early retirement problem. There is no fixed lifespan for anything, as you know. Find a friend with a keyboard and test that in your machine. That will show if it is your keyboard or your computer. We can progress from there.
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Pls help!!! student project about IMAQ circle detection
I am working on a school project about machine vision. Circle detection function is being used in the project. my tutor require me to explain the basic algorithm and theory used in the IMAQ circle detection. But after a extensive searching, i still can't figure out the Danielsson Function for circle detection even i read the IMAQ concept manual.
Question
1) Does anybody tell me more about the concept used in IMAQ circle detection
2) Does the circle detection function is the same as the Hough transformation??
Any Advice or information is welcome
Thanks a lotThank You every much for ur advice. I have searched the web many times. but the search result is not aim to my target. I usually use google to search danielsson function (distance) or machine vision circle detection as key phrase. the result usually refer danielsson as a name of a person. in fact, danielsson is a famous person. but the rare show me the theory. when using the phrase circle detection, it onlt give me hough transform.
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Please, Help me. I need to do Pluse Width Modulation using LabVIEW 7.1
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See in Figure,
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I will try its.
Attachments:
fig4.gif 5 KBHello,
I think the problem you're having comes down to how you're using the function. Basically, the frequency input to the sawtooth function is defined poorly in units of cycles/sample. Of course, we're used to seeing frequency defined in terms of samples/second. But remember, all we have in any programming language is data - in this case we have an array of data. The timing information is to be interpreted, and has nothing to do with the data that defines the waveform. What I mean here is, the time per sample in the sawtooth waveform is completely arbitrary and has nothing to do with the sawtooth itself. It will be defined if you physically output that waveform, because you will be writing some number or samples per second - that will define the frequency of the waveform. Thus, when you are working entirely in software, what you fundamentally care about are the number of samples, or perhaps a bit more specifically, the number of samples/cycle (for periodic functions) and also the number of cycles you'd like to define (together these two tell you the total number of samples). Of course, if you know the rate at which your samples will be output, and you know the samples/cycle that you've defined, those to pieces of information tell you the actual frequency that the signal you output will have.
The moral of the story is, when you wired 100 to the f input of the sawtooth function, it was interpreted as 100 cycles/sample, which clearly doesn't make sense because a single sample cannot represent 100 cycles, let alone even a single cycle. Take a look at the attached VI, where all I have done is used the reciprical function to make the front panel input be in units of samples/cycle instead of cycles/sample. This way you can specify the total number of samples and the samples/cycle, and you should have a pretty good feel for how to use the function in the slightly modified form.
I think that clears things up!
Best Regards,
JLS
Best,
JLS
Sixclear
Attachments:
Sawtooth.vi 24 KB -
Need some info about Brushless Motor control
Hi
I am new to motion control and I am planning to control a Brushless Servo Motor. What I understand from the motion control tutorials is that I need to use a high performance controller with a third party drive to control a brushless servo motor. Can anyone let me know if thats right and also help me out in finding some more information about Brushless Servo motors and how to control its motion.
Thanks,
SadaSada,
"Do u know where I can find some detailed information about controlling a brushless motor so that I can decide which of the two options to follow?"
Servomotors
The NI-Motion users manual has a section on brushless servo motors...
NI-Motion User Manual
The 7350 help file (the only Motion boards that can provide internal commutation) has a section on brushless servo motors.
NI 7350 User Manual
In almost everycase I am aware of, you will need to buy a UMI to interface with a brushless motor drive (the only case in which this wouldn't be true is if the Drive manufacturer created a drive specifically to cable directly to an NI Motion board).
Feel free to ask more questions,
Lorne Hengst
Application Engineer
National Instruments -
I need an example vi about stepper motor control
Hi.
My system is consist of pc-tio-10 controller, SLOSYN SS2000D6 driver, NEMA 17 stepper motor,and labview5.1.
I'm trying to give a pulse to the motor, take a pulse from the motor and control the nmotor. But I don't know what to do. So I want to see the example vi.
Please let me know where I can get appropriate example for this case. Thanks.
JeeHere is an older example from LV 3.X, but the concept is still valid.
Attachments:
STEPPER.TXT 2 KB
STEPPER.LLB 197 KB -
About concurrent server control system
sir,
i am doing my final year project about "Concurrent server control system"
i need the detail about that topic....
i need the guidance also........
please sent me immediatly.....
by
Gopala krishnan.NCopy and paste "Concurrent server control system" in google search box
and it will say
"We're sorry...
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"[d]
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Final year project using labview, what project i can apply?
i'm goin to be do a final year project, n i thinkin to use labview do it.! but i dun hav idea tht is suit...coz it can't use to the station..
anyone can give me some idea??thanksGreetings!
Are you exposed to LabVIEW programming before or are you
planning on learning LabVIEW and graphical programming for your design
project. If you are looking for resources the following link is a great
way to start.
http://www.ni.com/academic/lv_training/how_learn_lv.htm
The three hour course is really easy. Once you are done my
recommendation is to use one of our shipping examples like temperature
control with DAQ assistant and PID. Please let me know if you have
issues setting up the LabVIEW development environment / programming and
post any questions.
Thanks much
Avi Harjani -
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Hi..I'm at wits end. Altho nothing,not even an error message appears on my screen, my One Step DVD burn stops at 30 mins on my 60 min project. It looks,however, as if it is continuing to burn! It's only after the fact when I try to play it that I find out it has stopped at 30 minutes.
My set up is that I am running a mini-DV tape from my camcorder to the computer. What am I doing wrong? Preferences maybe? Thanks for any input on this at all. I'm stumped! KateHi Kate:
Quit iDVD.
Locate a file named com.apple.iDVD.plist and get rid of it.
iDVD will create a new one the next time it runs.
Empty the trash and run a permission repair using the Disk Utility.
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Sue -
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hello everyone
i am doing a project on vehicle tracking using lab view
i have completed the following steps
1)color to grayscale conversion
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also how to stop the bounding box from one frame to appear in the next?
please help soon.
an immediste reply would be of great help to me.
thank youThanks for replying
my project is to develop a system using labview which would track a moving vehicle, give the coordinates of that vehicle and if possible the speed.
how do I achieve this? M not quite familiar with labview.
The input to that system should be an Aviva file of general road condition and at the output I should get bounding boxes around the vehicles to track them.
I have my submission in a couple of daysso in a little hurry,
I am attaching a general block diagram that may give you an idea of how i want the system to be and the current vi that i have made.
hope you get a better picture now.
Attachments:
Picture1.png 72 KB
1project.vi 125 KB -
hi,
i wana develop a mini project could anyone just tell how to start and suggest some ideas..........i am new to this technology.sigh
http://java.sun.com/docs/books/tutorial/ -
I just finish a subtitling on a 60 min project now I want to make a dvd
I just finish a subtitling on a 60 min project now I want to make a dvd out of it , first I compressed it using compressor with 90 min best dvd preset , Now I don`t know what tod od , any help ?
Now you get to read the DVD Studio Pro Users Manual and do the tutorials included on the DVD SP disc.
Sorry, but by the time someone has written a walk through for you here, you could have probably read the manual twice.
If you have a problem understanding a particular aspect -sure, ask away. -
Mini project in Oracle??
Hi Friends,,
I have done my Oracle DBA course and keep trying for job as a dba..but it takes long time to get..
So my friends suggested me to do a mini-project in the mean time .
Is there any kind of mini project i can do as a fresher being at home.
I feel that .,, if i do that it will help my career also..
Is there anyone done like that before??..and is there any possibility to do that??
Give your valuable suggestions...You can start your project by thinking of requirements.
Firstly u gather requirements like create some db.
Secondly create some objects like Tables, Views, Synonyms, Tablespace, Index
and pump up some data into tables. Get some procedures, packages, fucntions.
Then u try to tune some queries, reports.
Try to apply all dba activities on that database.
I hope u'll get enough expertise by doing it!
Try to do real-time dba activities!! -
Hi
Project Server 2013: I am using Project Server Permission Mode and need help with permission assignments?
How can I change Permissions for the individual users to see specific projects or all projects in project center and to see specific quick launch items?
For Example: if i have 4 users, A, B, C and D. what i want is:
User A can see everything and act as a project manager or Admin.
User B can view all projects in project centre but can change the schedule or resource assignment etc.
User C can only act as approver of projects and can view all projects in project centre.
User D can only view specific projects for which permissions are given.
can i have some expert help in sorting and understanding permission modes... as i was playing with project server mode permissions and can't figure out how to apply the above scenario to set of my user.
Thanks in Advance
Cheers
AJ
Ajay KumarHi Ajay,
Please refer to this link for detailed explanations about PS2013 security model.
http://technet.microsoft.com/en-us/library/cc197638(v=office.15).aspx
Actually, it will take a couple of days to explain in detail the security model that is a fundamental and tricky aspect of every PS implementation. But basically, you NEVER set permissions for a single user. You have groups in which your insert users. Groups
define "what users can do". Then you associate groups to a corresponding category. Categories define "what user can see". Thus the association of a group with a category will set "what the user can do on the objects he can see". Then, for more advanced security
level, you can use the RBS that will consist in "branches" in which you'll insert users. Based on those branches, you'll customize categories to fine-tune what user can see (for projects and resources) depending on the RBS branch and level.
I'd advice you to start "playing" in a test environment with the default categories/groups that might probably cover your need.
Concerning your 4 users:
user A : add him to the "administrator" group. Be careful that you're mentionning either project manager or administrator, which are 2 groups/categories with totally different permissions level.
user B : basically can see everything and change everything? it could be in the project manager group, assuming that there are no project visibility restrictions on the category via the RBS.
user C : waht do you mean by "approver"? Workflow approvals? Then it will be the portfolio manager group. Task update or timesheet approval? Then it is another long topic: please refer in the documentation to the "status manager" and "timesheet manager"
concepts. There are not related to the security model. In a few words, the status manager is the owner of the project plan, is defined for each task and approves tasks updates. The timesheet manager is an attribute defined for each resource in its parameters
and approves resource timesheet.
user D : you have to define which permission level must be given to this user. Basically it could be a team member that will see only projects he's in the project team. Note that team member cannot interact with the project plan in another way than submitting
timesheets and/or tasks updates which must be approved.
Once more, those are large and complex subjects that require a deep dive into your business model and tons of tests in a test environment.
Hope this helps.
Guillaume Rouyre - MBA, MCP, MCTS
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