[time-nuts] Poor man's oven
albertson.chris at gmail.com
Tue Jun 6 19:10:12 EDT 2017
> There are more sophisticated control loop designs that can handle this
> better, eg by using two temperature sensors, one at the crystal and
> one at the heater. But designing them correctly is more difficult
> than the normal PID loop.
Keeping with the thread topic, I think this is the key. For the cost of
only one more cheap sensor you gain a lot. Harder design as you say but
getting help on-line seems to be free.
I have gotten PID to work myself with linear systems (motor speed) and I
reading up on Kalman Filters as I need them for navigation using multiple
I guess one could use the crystal frequency as a measure of its temperature
to tune the system. Is there a name to Google to read up on using two
sensors and a pid-like algorithm?
Redondo Beach, California
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