Somehow, the words teensie-weensie just don't seem to fit the standards of the rest of the post.-SWS wrote:Well please enjoy it! That last exchange was academic to the point of being outlandish.
Inflationary chamber or not, the transducer sits right at the impeller's output side---very close to where the CPAP hose plugs in. To even claim that the raw transducer data somehow doesn't accurately measure system output because of a slightly inflationary chamber is objecting to teensie-weensie transient pressure discrepancies not even supported by that pressure-delivery circuit. Sensing teensie pressure pulsation signals like cardiogenic oscillations toward making treatment decisions is one thing... But measuring much more coarse pressure-delivery circuit output is another thing entirely---that doesn't come even close to supporting such small pressure signal feedback resolutions required to measure the transient deltas between the impeller's output and feedback transducer.
And for me to entertain a comment about transient pressure discrepancies at such small and circuit-irrelevant resolutions is academic entertainment of an impractical objection. If you need to measure system output by compensating raw transducer data with a simple fixed function, then that's what you do. Here, the raw transducer data measures the system's pressure output just fine given the typical resolutions at which these circuits work.
Silly academic debate for objections based on irrelevant resolutions that are way too small to even matter for this feedback control circuit...
mar
