FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups 
 ProfileProfile   PreferencesPreferences   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Forum index » Science and Technology » Math
What is an integrator with a variable gain, and how to implement in C (Min/Max Limiters and One Frame Delays)
Post new topic   Reply to topic Page 1 of 1 [2 Posts] View previous topic :: View next topic
Author Message
Ian Parker
science forum Guru Wannabe


Joined: 15 Jul 2005
Posts: 100

PostPosted: Mon Jun 26, 2006 1:47 pm    Post subject: Re: What is an integrator with a variable gain, and how to implement in C (Min/Max Limiters and One Frame Delays) Reply with quote

Chris L wrote:
Quote:
Can you tell me everything there is to know about these to a C
programmer?
How would they be implemented in the C language? I would like intuitive
explanations. How would you explain them to a highschool student?

I think I've seen these in conversations on control theory. Is the
integrator
that 1/S stuff?

In books, I saw descriptions of integrators. I saw two definitions of
what I
assume to be the same thing. They used examples such as these two:

(1) If you take the Fourier (or maybe Laplace) Transform of equation
described via Circuits 101 steps and you have a term 1/S then that's an

integrator?

(2) It's an actual mathematical integration operation being performed
to determine the output voltage of a circuit?

What about MIN/MAX limiters, and one frame delays? What are they?
How would they be implemented in C?

Is a MIN/MAX limiter like a minimum function in a computer language?
Where a value under consideration would pass through the gate if it's
between the min and max inclusive? Otherwise, a default value is
output.

Is a MIN/MAX limiter like a hard limiter. A hard limiter will output 1
if input
is positive, and output -1 if input is negative. Can this be
implemented in
the C computer language with a "sign" function?

Are one frame delays a register that holds the value until the time of
the delay is over? What is a frame?

Help with intuitive explanations of these,
Chris Lusardi

i = sqrt(-1). Note that we obtain real functions where C(k) =C*(N-k)
where * denotes the complex conjugate.

In the case of a Fourier transform you can readily
integrate/differentiate.

exp(ikx) -> ikexp(ikx) on differentiation and exp(ikx)/ik on
integration. Hence differentiation/integration is a trivial function.
In general.

A simple C program would be simple summation. In control theory you
have something called a "tranfer function". This is a juju word in
control theory. The simple way of looking at it in high school Physics
is to say that we have a fairly large aircraft and we perform rapid
movements on the control stick. Quite clearly a large aircraft cannot
move, it has too much intertia. To find out how a plane behaves you
need.

T(k)I(k)exp(ikx) where T(k) represents the transfer function and I(k)
the impulse applied. We obtain I(k) by taking the Fourier Tranform of
the control signals appied. Because a system is essentially low pass
control signals in an autopilot are often bang bang (0 or 1) and
applied fast. This is not noticed by the crew or passengers.
Back to top
clusardi2k@aol.com
science forum beginner


Joined: 20 Oct 2005
Posts: 16

PostPosted: Mon Jun 26, 2006 11:55 am    Post subject: What is an integrator with a variable gain, and how to implement in C (Min/Max Limiters and One Frame Delays) Reply with quote

Can you tell me everything there is to know about these to a C
programmer?
How would they be implemented in the C language? I would like intuitive
explanations. How would you explain them to a highschool student?

I think I've seen these in conversations on control theory. Is the
integrator
that 1/S stuff?

In books, I saw descriptions of integrators. I saw two definitions of
what I
assume to be the same thing. They used examples such as these two:

(1) If you take the Fourier (or maybe Laplace) Transform of equation
described via Circuits 101 steps and you have a term 1/S then that's an

integrator?

(2) It's an actual mathematical integration operation being performed
to determine the output voltage of a circuit?

What about MIN/MAX limiters, and one frame delays? What are they?
How would they be implemented in C?

Is a MIN/MAX limiter like a minimum function in a computer language?
Where a value under consideration would pass through the gate if it's
between the min and max inclusive? Otherwise, a default value is
output.

Is a MIN/MAX limiter like a hard limiter. A hard limiter will output 1
if input
is positive, and output -1 if input is negative. Can this be
implemented in
the C computer language with a "sign" function?

Are one frame delays a register that holds the value until the time of
the delay is over? What is a frame?

Help with intuitive explanations of these,
Chris Lusardi
Back to top
Google

Back to top
Display posts from previous:   
Post new topic   Reply to topic Page 1 of 1 [2 Posts] View previous topic :: View next topic
The time now is Tue Jun 27, 2017 10:37 am | All times are GMT
Forum index » Science and Technology » Math
Jump to:  

Similar Topics
Topic Author Forum Replies Last Post
No new posts The CADO Reference Frame for an Accelerating Observer Mike Fontenot Relativity 0 Tue Nov 06, 2012 3:33 pm
No new posts How to solve linear program with matrix variable ? Fan num-analysis 4 Thu Jul 13, 2006 5:55 am
No new posts Seeking Beautiful Single-Variable Calculus Problems Karl M. Bunday Math 8 Wed Jul 12, 2006 4:02 am
No new posts Fit a transfer function to gain and phase data Roza.Mahmoodian@gmail.com Control 7 Fri Jul 07, 2006 5:05 pm
No new posts S/W Eng Asks For Intuitive Explanation Of Logic Diagrams ... clusardi2k@aol.com Control 6 Fri Jul 07, 2006 12:23 pm

Copyright © 2004-2005 DeniX Solutions SRL
Other DeniX Solutions sites: Electronics forum |  Medicine forum |  Unix/Linux blog |  Unix/Linux documentation |  Unix/Linux forums  |  send newsletters
 


Powered by phpBB © 2001, 2005 phpBB Group
[ Time: 0.0188s ][ Queries: 20 (0.0038s) ][ GZIP on - Debug on ]