Re: What's a transient?

Chris wrote

You seem to be attempting to redefine a commonly
accepted engineering term for some nebulously related
purpose.

Moi? Just the reverse. Check it out.

The accepted engineering collective noun is "singularity", I believe. That
leaves the word "transient", which is not after all happy as a noun, free for
use in the term "transient response".

Here is an accepted definition of transient response:

"The transient response is that part of the total system response which
approaches zero as time approaches infinity." (Feedback and Control Systems, Di
Steffano et al, McGraw Hill, 1976)

Note that it is the response that is transient, not the input signal. If I mean
that the response is transient, I say it is a transient response. What could be
more simple, or more elegant, than that?

It's a course that can go exactly nowhere,
Mon; make a new word.

It's a course that takes competent systems to their targets.
I don't need to make a new word. I'm an engineer, and "singularity" suits me
fine.

"Transient", as a noun, is sloppy and misleading.

Maybe the confusion already evident in this thread's
posts to the difference between small-signal and
large-signal response and the various meanings of
the word "distortion" might be a better place to start.
Basics first; everybody on the same griddle; like that.

I was not prompted by a desire to progress the thoughts of others, I'm afraid.
I'm an amateur enthusiast not a prophet. I have not considered a strategy for
general education. But I have seen confusing use of the word "transient" and I
know from experience that this is a symptom of a particular misunderstanding
about the nature of transient response. I must admit in passing that I am guilty
myself of confusing "free" and "forced" responses, on occasion, with "transient"
and "steady state". Because I still need to learn, and because knowledge is a
social phenomenon, I engage in technical banter.


Neither do I believe there are many things more basic about systems than the
distinction between steady state and transient responses. I would expect to find
it by about page 10 in any undergraduate book on control systems.

I take "distortion" to be any departure from the original signal other than a
constant time shift or a constant and proportional change in amplitude. Perhaps
I am wrong. I think I got it from Arnie or Stewart...people who care about
distortion. Happy to change if you want. It's not in any of the engineering
books I have to hand.

cheers, Ian

"Qian li zou dan qi"

eh?


.

Relevant Pages

  • Re: Whats a transient?
    ... The accepted engineering collective noun is "singularity", ... use in the term "transient response". ... what portion of the equation describes the transient response vs the ... disturbed from the steady state condition.. ...
    (rec.audio.tubes)
  • Re: Whats a transient?
    ... To explain where I'm coming from, I think I know what "transient response" ... Here you demonstrate exactly the confusion I am trying to dispel. ... always produce distortion in response to a change in input. ...
    (rec.audio.tubes)
  • Re: Whats a transient?
    ... I wondered if I should put the use of "transient" as ... To explain where I'm coming from, I think I know what "transient response" ... always produce distortion in response to a change in input. ... signals in addition to the wanted signal. ...
    (rec.audio.tubes)
  • Re: Whats a transient?
    ... "The transient response is that part of the total system response which ... Note that it is the response that is transient, ... I say it is a transient response. ... the Mandarin include "Riding alone for Thousands of Miles" ...
    (rec.audio.tubes)