[sdiy] Block based design was: Favourite VCO designs

[cheater cheater]

Frequency domain modeling? Can you give an example?

D.

On Thu, Feb 25, 2010 at 19:39, David Ingebretsen <dingebre at 3dphysics.net> wrote:
> There are comparable "components" across many engineering disciplines. I
> took a whole course as an undergraduate where we learned frequency domain
> modeling and the similarities between the building blocks used in different
> engineering disciplines with emphasis on mechanical and electrical systems.
> Quite fascinating.
>
> David
>
> ~~ -----Original Message-----
> ~~ From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
> ~~ bounces at dropmix.xs4all.nl] On Behalf Of David G. Dixon
> ~~ Sent: Thursday, February 25, 2010 10:27 AM
> ~~ To: 'cheater cheater'
> ~~ Cc: 'synth-diy'
> ~~ Subject: RE: [sdiy] Block based design was: Favourite VCO designs
> ~~
> ~~ > it's indeed very useful to break up your designs into blocks and this
> ~~ > happens in every discipline of engineering...
> ~~ >
> ~~ > However it's not good to think of them as completely separate blocks,
> ~~ > since they can often negatively affect or even interrupt each other's
> ~~ > operation...
> ~~
> ~~ Yes, of course.  In process (e.g., chemical, metallurgical, petroleum)
> ~~ engineering, sub-plants are designed as discrete blocks, but they must be
> ~~ sized to play their proper role within the overall mass and heat balances
> ~~ of
> ~~ the plant.  In other words, each block has a specific task to perform
> ~~ within
> ~~ the whole, but can effectively be isolated from the whole for detailed
> ~~ design, just like electronics.
> ~~
> ~~ The analogy between chemical and electronic engineering is remarkable.
> ~~ Indeed, I would classify electronics as just another branch of process
> ~~ engineering.  The major difference is that process engineers are mostly
> ~~ concerned with the steady state, while electronics is mostly concerned
> ~~ with
> ~~ the transient or cyclic response.  Where process engineering really
> ~~ approaches electronics very closely is in the realm of process control.
> ~~ Here, the engineer is mostly concerned with the transient response, and
> ~~ how
> ~~ to control the plant to ensure proper and smooth functioning in the face
> ~~ of
> ~~ various process upsets.  These upsets include delta functions (triggers),
> ~~ step functions (gates), cyclic responses (waves), and noise.  Common
> ~~ process
> ~~ control elements include sensors (keyboard), controllers (VCFs and
> ~~ envelopes) and valves (VCAs).  Indeed, when you get right down to it, a
> ~~ chemical plant is really just one big modular analog synthesizer!
> ~~
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