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Direct drive motor

mount
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52 replies to this topic

#51 gregj888

gregj888

    Apollo

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  • Posts: 1418
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  • Loc: Oregon

Posted 11 April 2016 - 08:13 PM

Probably a different "Greg" there are 3-4 of us floating around the ATM group in Portland.  I haven't been to OSP for about 20 years since I own some land in the area.

 

That said, be happy to try to help.  Where are you located?

 

The ATM get together for RCA is on the 23rd, check the RCA Calendar.  I don't expect to make this one, I'll be judging science fair projects... :-)   I could meet you later though, PM me...

 

Greg


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#52 ctcables

ctcables

    Messenger

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  • Loc: Oregon

Posted 12 April 2016 - 03:01 PM

Greg PM sent, thank you for any help.  I am going to make this Direct Drive Motor work one way or another.



#53 radicell2

radicell2

    Vostok 1

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Posted 07 January 2017 - 11:44 AM

There is little information about ATM direct drive equatorial mount. The only thing I can find is http://www.astrosurf...ives/index.html from a French gentleman. Two key pieces of the project seem to be the encoder and the motor. The encoder turns out to be Renishaw and the motor is made by an Italian company called Phase Motion Control. Apparently, the motor is rather special. It is a torque motor. All motors generate torque but torque motor is the one specifically designed to be operated in constant stalled or nearly stalled state, just like a tracking equatorial mount would do.


The company has a US web site http://www.PhaseUSA.us
Looks like a TK motor is needed.

Ric

Edited by radicell2, 07 January 2017 - 11:51 AM.



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