[simpits-tech] Driving Synchros - Here is what I found...

[Marv De Beque]

Gene,

The resolver you handed me has 6 wires.  The synchro receiver has 5 
wires.  I think the synchro receiver is some sort of a hybrid.  Do you 
have data sheets?

Marv


On Thursday, April 4, 2002, at 11:09 PM, Gene Buckle wrote:

>> However, I do have another proposal.  I believe I can build a small
>> microprocessor based board that will accept a serial data input with 12
>> bits of precision that will produce two 12 bit precision analog outputs
>> designed to drive a single 4-wire synchro.
>>
> You sure they're only 4 wire?  How many wires did that one I gave you 
> have
> on it?  I don't recall.
>
>> About 0.18 degrees of resolution.  That is, 12 bits minus 1 bit of 
>> noise
>> for 11 bits or 2^11 which is 2048.  If you divide 360 by 2048 you get
>> 0.1758 degrees.  I think that amount of movement is fine enough for us
>> regular guys and girls.
>>
> 10 bits would work as well.  That should give you 1024 positions.
>
>> The other issue is latency.  There will be a small amount of time
>> between when the digital number is received and when the value is
>> translated to the synchro.  I would expect that latency to be under 10
>> milliseconds.  I think that is plenty quick enough for us.
>>
> 10ms is fine.  150ms is the high end limit for a Class D FTD.
>
>> micro.  Each board could be "strapped" with an address using jumpers so
>> you can assign a unique place in the data string to grab its data.
>>
> I2C or SPI/Microwire would work well here.
>
> g.
>
>
>
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