I am using a timed while loop and am unable to get the loop to run at a speed of less than 1ms (I am currently using the Wait(ms) function). How can I get a faster response?

[andyt 50]

I am trying to create a virtual engine within a timed while loop and am unable to get the loop to run at a speed of less than 1ms (I am currently using the Wait(ms) function). This does not however allow realistic engine speeds. How can I overcome this? I have access to a PCI-MIO-16E-4 board.

[Johannes Niess]

andyt writes:

> I am using a timed while loop and am unable to get the loop to run at
> a speed of less than 1ms (I am currently using the Wait(ms) function).
> How can I get a faster response?
>
> I am trying to create a virtual engine within a timed while loop and
> am unable to get the loop to run at a speed of less than 1ms (I am
> currently using the Wait(ms) function). This does not however allow
> realistic engine speeds. How can I overcome this? I have access to
> a PCI-MIO-16E-4 board.

Andy,

Unless you use a real time platform, getting extactly 1 ms loop rate
(or even less) is impossible. It starts getting troublesome at about
0.1 Hz for standard operating systems.

I'd tackle your problem with "if i mod 10 == 0 then sleep 1 ms".
Of
course this is jerky by design.

HTH,

Johannes Nie?

[Matt_K]

If you need fast, reliable loop rates, LabVIEW Real Time is definitely the way to go. You can find more information on this product at the following webpage: http://sine.ni.com/apps/we/nioc.vp?cid=3304〈=US