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400 Hz Servomotor

Hi to all NG! I need of your help; I have a lot of 400Hz Muirhead Servomotor-Tachometer generator mod. 15M81A, for 400Hz isn't a problem but I don't have acquaintance, idea and experience for drive and use this motors. This motor have a 115Vac primary and two 13Vac control windings, one tachometer 115 Vac primary and a secondary output. Do you have some application notes, schematic, info, URL or other suggestion for utilize this motors in a little project?

Many thanks and sorry for bandwidth..

Regards..

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Ia ora na outou, 
RedRoby
Reply to
RedRoby
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http://www.muirheadaerospace.com/contact/details.stm
Reply to
John Fields

Thanks John, I wrote few months ago and but I haven't repy...

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Ia ora na outou, 
RedRoby
Reply to
RedRoby

Look up 'synchro' and 'resolver' in you rfavourite search engine, I suppose...

Thomas

Reply to
Zak

La scrittura indecifrabile di "Zak" interruppe la mia meditazione, imbrattandomi lo schermo con :

Many thanks Thomas, unfortunately I have read all readable :-(((( Bye

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Ia ora na outou, 
RedRoby
Reply to
RedRoby

Do you think they belong in that class of equipment? Do you want an explanation about them or do you think they are different?

Thomas

Reply to
Zak

La scrittura indecifrabile di "Zak" interruppe la mia meditazione, imbrattandomi lo schermo con :

Hi Thomas,

I have a lot of this servomotor and I'm looking for application notes or schematic. This servomotor are very rare for the motor and the tachometer enclosed together. This motors are old parts, used in 60-70's analog calculators; I hope that some "old crown" hold (as I) oldest catalogues or data sheet. Bye and thanks

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Ia ora na outou, 
RedRoby
Reply to
RedRoby

Is that motor out of a Muirhead fax machine (circa 1980)?

Ken

Reply to
Ken Taylor

You have voltages; did you try to power the motor?

It would not surprise me if the motor behaves as an AC powered stepper motor with extremely high step accuracy.

There is a field coil that has the same function as the permanent magnet in a stepper.

And there are two drive coils; the phase and voltage these are driven with determine rotor position.

However this is mostly for statical applications (indicators) so the tachometer baffles me.

Thomas

Reply to
Zak

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