> From: "David Roberson" <[email protected]> > Sent: Tuesday, July 23, 2013 1:32:36 PM > Subject: [Vo]:DGT Control Not Trivial
> It has been an interesting day indeed. One observation that I made is > that the thermal and plasma control of the DGT device is not so > easy. It appeared to take quite a balancing act in order for the > device to work within its desired range and the guys handling the > controls had their hands full most of the time. >From the Q&A I *think* they said that they a) balance the front-to-back temperature b) Use the SLOPE of one of the curves (I forget which) as a simple and accurate control c) Turn the pulses on and off (here they kept it constant) I suspect that c) is there main control method, so they have to juggle the other parameters more than usual. The last time I looked they lowered the heater temp and the output temp dropped dramatically (100-ish). It's rising again, but erratically.
