pwm based dc motor speed control using labview .vi

[aircelgprs]

HI I AM ENGG STUDENT DOING FINAL YEAR PROJECT ON PWM BASED DC MOTOR SPEED CONTROL USING LABVIEW.I WILL USE DAQ CARD FOR INTERFACING .BUT I AM FACING DIFFICULTY IN BUILDING BLOCK DIAGRAM I.E VI FOR SAME .SO ANYONE PLZ HELP ME AND SEND VI.

[aeastet]

Hi,

I looked through some forum entries and this is what I found. You should try and do a search on the subject before you ask a question. Not that we do appreciate your question.

Advanced Data Acquisition Series – Pulse Width Modulation in NI LabVIEW Using NI-DAQmx
http://zone.ni.com/devzone/conceptd.nsf/webmain/90DFE241E571056C86256FA4004ABB63?opendocument&Submit...

Tutorial: Developing a PWM Interface using LabVIEW FPGA:
http://zone.ni.com/devzone/conceptd.nsf/webmain/0858249f041def8c86256de300769757

DAQmx - Example Pulse Width Measurement Using 3 Counter http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=E0720D1AC5E56EFBE034080020E74861&p_...

I hope this helps!

[aircelgprs]

solution given by u doesnt help.this is not like that i am doing nothing and asking questions i get problem so i think that ni forum will help me.thank u!!!!

[aircelgprs]

plz someone help me noone is replying then whats the use of forum

[Dennis_Knutson]

Why don't you post what you have so far and explain what the difficulty is? You've gotten some links to help you get started.

This is not a forum for providing homework answers. You really need to show something in order to get further help. A little patience is also called for. The majority of responders here are volunteers and have better things to do than listen to some whining. You haven't even provide the type of DAQ card that you are using.

[aircelgprs]

ok thank u for your reply atleast.i am go through that links but its not giving idea of how to built vi .as i am new to labview i am doing 100% from my side.i am using DAQ6009. i am planned to built vi. in specific manner that include amplitude,sampling rate,dutycycle etc.as i am new i am not understanding from where to start.thank u

[johnsold]

The best place to start is to look at the examples which come with LV.

A cautionary note: The USB6009 is a very poor choice to do PWM motor speed control.  It has only software-timed digital outputs and the maximum rate is about 150 Hz.  This rate is too slow for smooth speed control and the software timing means that quite a lot of timing jitter will exist.

If you must do PWM control with a  USB6009, controlling the temperature of heater is a better choice, because the slow update rate and timing jitter will not be as much of a problem.

Lynn 

[aircelgprs]

THANK U FOR UR REPLY

[RavensFan]

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aircelgprs wrote:
THANK U FOR UR REPLY

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I think your Caps Lock key is stuck.

And check your Y and O keys as well.  I'm think you meant to type "Thank you for your reply", but some of your letters didn't come through.

[aircelgprs]

i still not satisfied with my question.all are telling about other things and not on main topic