Electronics > Beginners
Odd two-phase induction motor in aerospace gyroscope, need help understanding
(1/4) > >>
Haatveit:
I got my hands on a Soviet era gyroscope, similar if not identical to a type used on the Soyuz spacecraft, among many other things. See attachment image. I might post more about it elsewhere when I figure more out, it's a fascinating piece of hand-built, hand-tuned gear that's for sure. My hope is to figure out how it all works, and maybe make it do something interesting  :-/O

For now, I'm trying to work out how some of the motors on it work. One of them was burned out / broken, and I'm trying to locate a replacement. If anyone in Russia or Ukraine feel like helping me, I'd appreciate it - I can find replacement motors there, but I can't order them, partly because I don't understand anything....!

Meanwhile, I need to understand exactly how this motor (there are 2 of them in the gyroscope) is supposed to function.... It doesn't seem to be obvious. It's also incredibly hard to find information about this that isn't written in Cyrillic, so if anyone can read it clearly, feel free to help with that too!

Here is the schematic for the motor (I can confirm that the motors are wired exactly this way):



I was expecting a "two-phase" motor to have two separate windings, driven out of phase. The technical information I found seem to suggest exactly that. But I am woefully unfamiliar with these types of things, I admit complete cluelessness when it comes to magnetics and motors and all that type of jazz.

Some info about the motor here.

But as the two main windings seem to be connected in ... series? And there's a tertiary winding (This must be the "control winding" they refer to).

This is a very small motor for what it's worth:


Dubbie:
Just asked the Russian here at work and she said that the type on the schematic simply says:

it is 'designation/name of the exits'

amyk:
This video shows the inside of one along with some driving circuitry. Unfortunately, no explanation:



Here is an article with more information and driving circuitry:

https://ingeneryi.info/shemy/prochie-shemy/1748-400-gercovyy-generator-dlya-pitaniya-elektrodvigateley-did-05.html

...and even more schematics:

http://ttonons.appspot.com/did-0-5ta-shema-vklyucheniya.html
wasyoungonce:
Haven't really had a good look but maybe a "fast erect winding"...to position the motor to a known start position.
Haatveit:

--- Quote from: wasyoungonce on June 21, 2018, 02:34:39 am ---Haven't really had a good look but maybe a "fast erect winding"...to position the motor to a known start position.

--- End quote ---

This would make a lot of sense in a gyroscope application, I'll keep that in mind. Although there are feedback potentiometers as well so they may not be using it that way.


--- Quote from: amyk on June 21, 2018, 01:37:00 am ---This video shows the inside of one along with some driving circuitry. Unfortunately, no explanation:



Here is an article with more information and driving circuitry:

https://ingeneryi.info/shemy/prochie-shemy/1748-400-gercovyy-generator-dlya-pitaniya-elektrodvigateley-did-05.html

...and even more schematics:

http://ttonons.appspot.com/did-0-5ta-shema-vklyucheniya.html

--- End quote ---

Those are great links, thank you! I'll sit down and try to figure this out once I have time.

I have a pair of pretty beefy general purpose amplifiers that I hope to be able to use to power these. I'll generate whatever I need on my arb gen, and amplify that to the voltages (and currents obviously, the arb gen can't do much there) I need. Should be interesting  :-+
Navigation
Message Index
Next page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod