usb 6008 suport PWM????

[neiviv]

Under the USB 6008 spec state that it does not support pulse generation. Is it mean that this device cannot support PWM to run a dc motor?

[johnsold]

Digital output on the USB6008 or 6009 is software timed and has a maximum rate of around 150 Hz if I recall correctly. Any software timed output will have significant amounts of jitter and the slow update rate will result in very jerky movement of your motor. The USB 6008 is not suitable for PWM motor control.

Lynn

[neiviv]

Thanks for ur information..

[wbadry]

the key dilemma in this  is that PWM depends on how fast is your PC

[iRiSH86]

so.. i need to control the wise of a CD motor, and  I have only NiDAQ 6009, and I though develop a program which have a behavior of PWM with NIDAQmx, after that, send this signal to the driver.. is it possible?

[Rlima]

     Hi   IRISH86

     My name is Reynaldo Lima V.   I  own a small ans growing company for electronic design and LabVIEW applications

     with high experience in VISION

     6009 has a one counter but is for meassure, will not generate pulse. 

     I have been doing some research for PWM generation,  at the beginnig I try to use a  DIO port to do ti but is not the best

     way to do it,  PC is going to be busy controlling the DIO and will make it slower to run other vi's.   So I find the USB 6210

     that has two 32 bits counters, whit this you can controll and manage a PWM.   You need to design a hi-power circuit to

     control  you DC motor

     I'm  working on own design  for a light for vision systems that also i develop, I planning to use a PWM signal generated

     with the  USB-6210.

     Hope my suggestions help you...

     Best Regards..

     Reynaldo Lima Villarreal.

     I N G E L

      General Manager.

      email: reynaldolima@aol.com

[Lee.P]

Hihi,

Are you using LabVIEW to generate PWM signal from USB-6210? If yes, you will be able to find examples in NI Example Finder in LabVIEW. There are a few examples for generating PWM signal from USB-6210.

Regards

Lee

Applications Enginner | NI ASEAN

[iRiSH86]

Hi Reynaldo!!

really thanks for your answer, but the problem about it, is that I can't acquire other hardware different form 6009. I've the pwm circuit, it works manually but I need handle from labview

[Rlima]

    Hi Irish86

    If you can tell more about your circuit, maybe I can figure out something else...

    I don't know how your circuit works,     

    Best Regards...

[Rlima]

   HI  Lee P.

   Your rihgt,  I'm using LabVIEW to generate the PWM signal from the USB6210,  I already found the example, It helps me a lot, and save

   me time.

   I'm ready with the PWM, but still waiting for some led samples I order to do some test and evaluations...

   Best Regards..

   Reynaldo Lima V.