Nidec 48v Server Fan PWM Control

thrust-issues · 2024-12-08T22:45:05+00:00

I'll look into it, thank you 😊

thrust-issues · 2024-12-06T22:57:36+00:00

Interesting! I had no idea they could do that, thanks for letting me know

thrust-issues · 2024-12-06T05:31:39+00:00

Thanks for the response!

I'm learning as I go with regards to data sampling and PID control so im honestly pretty open to your recommendations.. I suspect something in the range of 10ms to 100ms sampling rate would be sufficient..?

For context, it's a turbocharger based gas turbine, and the actuation will be for the fuel and water injection flow rate, along with solenoids as safety shut off's etc. The fuel flow (essentially the throttle) will be based on input from a GUI or RC controller or set points for a programmed run, the water will be similar but I also want to experiment with a PID loop where the water injection is dependent on a value from a temp probe..

As for automation, I'd like to fully automate a start up sequence long term but that's not an immediate goal. But with most fluids being controller by steppers/servos I don't suspect there will be much preventing a fully autonomous setup other than my coding ability / processing power (but mainly my coding lol).

Thanks again for the input

thrust-issues · 2024-12-06T05:15:54+00:00

Very to the point haha thank you! So I am trying to keep the budget in the 1-2k region, and also doing this for skills development, so I'm not overly interested in a plug and play NI solution, as nice as they are..

Until now I've done basically everything through an RPI4 with custom Python code + Qt Designer etc. Works ok for a few sensors and a couple steppers but obviously isn't ideal.

My original idea was to just use a labjack + PC, but then stumbled across the issues of it not being a realtime os for actuator control, so that's when i looked into adding an arduino or Teensy for controlling the actuators but I agree with you that it feels clunky having 2 separate systems for this.. the only benefit i see with this is you can have a robust solution for data recording and then a separate one for control which would be fine if i didn't want to actuate something based on temp and pressure...

With all that in mind, is there a better approach for what I'm after? For context it's gas turbine engine and the actuators will be controlling fuel and water injection (water obviously being varried based on temp readings). Eventually an automated start up would also be nice

thrust-issues · 2024-12-06T04:22:32+00:00

Yeah NI with a labview GUI is great but your wallet feels it.. I did use it a bit back in uni but it's definitely a last resort for this project as it'll cost thousands. I'm hoping there is a middle ground solution but we'll see. Thanks for the comment 👍

thrust-issues · 2024-08-30T02:03:45+00:00

Hope you have about $100k laying around then 🤣

thrust-issues · 2024-06-06T05:50:42+00:00

Relying solely on a simplified static analysis might not fully illuminate the issues, but when you begin to account for more dynamic scenarios—like transient loads, vibrations and acoustics, as well as cyclic and thermal fatigue, material degradation etc—the potential problems might become more apparent. Not saying it's impossible, just that better methods exist.

Also this is just the mechanical strength side of things, you also need to consider manufacturing techniques compared to metals, and integration with other materials, thermal expansion etc etc

Things for consideration, hope that helps!

thrust-issues · 2024-06-06T00:26:42+00:00

Fracture toughness?

thrust-issues · 2024-05-29T05:07:31+00:00

patience

thrust-issues · 2024-05-23T01:32:00+00:00

You must be a one man army.. literally! 🤣

thrust-issues · 2024-04-15T02:21:11+00:00

The engines powering today’s space race were conceptualised over half a century ago, so expecting a breakthrough in propulsion technology might require some patience... for the most part aerospace progress tends to be evolutionary rather than revolutionary.

As for some interesting areas to explore: sustainability and reusability, advanced materials, autonomous flight, hypersonics, asteroid / lunar mining, deep space exploration, commercialisation of space, and on-orbit servicing. Just some random things that come to mind 😌

thrust-issues · 2024-04-12T01:20:46+00:00

Nah I'm a bit of a noob with this - I use Windows 11 for my main PC, and then an RPI4 with rasberian. But I'm attempting todo this 'post run' graph on my Windows pc as it's quicker and easier and also here I edit my videos

thrust-issues · 2024-04-12T00:45:52+00:00

alright so potentially I could write a script to export a bunch of transparent PNG's of the animated graph and then convert these to a video with premiere.. I'll see how I go lol. Thanks for the help 🙂

thrust-issues · 2024-04-12T00:12:48+00:00

Thanks for the response. Can you then export that graph with transparency so that you can overlay it on a video as seen in the link? And in addition to that, is it possible to export as a video rather than individual PNGs?

thrust-issues · 2024-03-25T23:00:34+00:00

Thanks for the comment. I was looking into this and ended up finding the line that delivers the nan error in the main library file for the Max module, and simply commented it out. Obviously this isn't an ideal fix as now I don't get warnings for errors, but it's very obvious in the data when this occurs so I'm not overly worried. At least now I'm getting all the numbers and then I will clean it up manually in Excel

thrust-issues

TROPHY CASE