[time-nuts] ensemble oscillators for better stability

Bob Camp lists at rtty.us
Sat Dec 29 03:24:55 UTC 2012


For three:

Compare A to B via a mixer and put in a PID loop.
Compare A to C via a mixer and put in a PID loop.

Sum A with B with C via a three input analog adder. 

For thirteen: 

A to B via PID
A to C via PID
A to D via PID ….

… sum A with B with C with …. M via a 13 input analog adder.

There are several other ways to do it.


On Dec 28, 2012, at 10:06 PM, Hal Murray <hmurray at megapathdsl.net> wrote:

>> My first idea would be to mutually lock the oscillators. You can even do
>> weighted locking without much difficulty. You toss the oscillators into  a
>> mixer, use it as a phase detector, do the usual PI control and then  steer
>> both oscillators the same EFC but with opposite sign. One can add  a common
>> EFC steering to both: 
> How would you extend that to 3 or 13 oscillators?
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