08-07-2018 04:41 AM
I'm doing a project where I want to control a proportional pressure regulator by giving it an input voltage from 0 - 10 V. However, readings from a distance sensor will determine the level of regulation.
My question is whether a normal NI DAQ such as the USB-6212 will be able to do this with a relatively good and constant response time for the output signal? I've had a look at the real time controllers as well, but they seem to me like a too powerful and expensive option for a relatively simple problem?
I'm looking at an output response time of at least 0.2 s, but faster will obviously be better. I realize that a DAQ is more for sampling and saving a lot of data rather than using this data as a control input for an output port. I've been warned that a DAQ will probably not work great for this application and that I should rather consider something like a PLC or microcontroller setup. I was still curious on whether it may actually work with a normal DAQ?
I'll appreciate any light shed on this topic.
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08-07-2018 07:10 AM
@EBIE wrote:
My question is whether a normal NI DAQ such as the USB-6212 will be able to do this with a relatively good and constant response time for the output signal?
If jitter is your concern, then avoid Windows like the plague when it comes to your control processing. Furthermore, I would also avoid USB (I find it to be unreliable for various reasons).
Personally, I think a simple Arduino setup will meet your goals and be fairly cheap.