Talk:Control theory

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	This article is within the field of Control theory.

Text and/or other creative content from this version of Control engineering was copied or moved into Control theory with this edit. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists.

Archives

Archive 1

This page has archives. Sections older than 365 days may be automatically archived by when more than 5 sections are present.

Cruise control

I fail to see the correctness of

"(Does not apply to manual transmission vehicles.)"

What specifically does not apply? Holding the throttle fixed works the same for a automatic and manual transmission. Removing sentence and call for further clarification. Cburnett 00:07, 6 Jan 2005 (UTC)

Locking the throttle on an automatic transmission does not lock speed, due to losses in the torque convertor. --Sponge! 04:10, 12 Jan 2005 (UTC)

Locking the throttle on an engine does not lock in speed; it doesn't matter what the transmission is. Change in angle changes the torque on the engine, which changes the speed. So I still don't see how the quote is relevant... Cburnett 05:15, 12 Jan 2005 (UTC)

It is good to put an edit summary when you write something. When I saw that this page was modified, and no summary was put, I thought it was vandalism (it happens all too often unfortunately). Besides, putting an edit summary helps people who have this article on their watchlist understand what you are up to. This is just a thought. Oleg Alexandrov 05:25, 12 Jan 2005 (UTC)

By the way, do you know anything about optimal control? That page needs some work. See that page and its history. Oleg Alexandrov 05:25, 12 Jan 2005 (UTC)

Ugh, of all the control classes I've taken....optimal control was my least favorite. I'll add it to my list. Cburnett 05:42, 12 Jan 2005 (UTC)

Explanation

I find many of the explanations here extremely deficient. For example the link between impulse response and control theory is entirely unexplained: so the meaning of the equation $x[n]=0.5^{n}u[n]$ simply cannot be deduced. What is x here? Or n? Have we implicitly moved to an iterative/difference equation scheme rather than an ODE model?

What is (s), used as an argument to P(s), etc? A Laplace transform variable? What variable is the Laplace transform carried out with respect to? As a PhD mathematician with only a little control theory, I found myself no wiser after reading the middle few sections. Having said that, the control strategies section and introduction are much clearer. -- GWO

Overview - citation needed

Does the Citation Needed tag apply to Social Science only, or to the whole list? Regarding the whole list, we could add physiology. Financial System and economics would be possibly redundant? Constant314 (talk) 18:56, 16 May 2015 (UTC)[reply]

I have added citation to the whole list - this reference includes psychology, economics, etc. I have also added the next citation required, but I think there is something more problematic here. This part is taken directly from Schmidt, R. A., & Wrisberg, C. A. (2007). Motor learning and performance w/web study guide: A situation-based learning approach. Human Kinetics. First of all, I am not sure if this is a reliable source for control theory article; second of all, it looks a bit like plagiarism, because those exact words can be found in google Scherschu (talk) 19:05, 13 June 2017 (UTC)[reply]

If you think that it was plagiarism, remove it now. Then we can discuss whether it was OK and possibly put it back. Constant314 (talk) 23:11, 13 June 2017 (UTC)[reply]

Suggestion for more clarity

Where it says "the systems above can be analysed using the Laplace transform on the variables", perhaps it would be more definitive to say "the systems above can be analysed by taking the Laplace transform of each signal, and of the impulse response of each system, for straightforward algebraic manipulation. Note that the output of each system is the convolution in the time domain of its input signal with its impulse response, and the Laplace transform of the convolution of two functions is the algebraic multiplication of their separate Laplace transforms." — Preceding unsigned comment added by 58.109.72.54 (talk) 04:37, 17 April 2016 (UTC)[reply]

History

I've moved the "History" section to the top of the article to help provide more of an introduction for readers, but it could do with further expansion. A quick scan of Fernández-Cara and Zuazua's article^[1] looks like it would be good source for expanding this and beginning to tie other sections together, as a lot of sections are currently somewhat standalone explanations of concepts without tieing them into the wider field and its historical development.

References

^ Fernández-Cara, E., Zuazua, E. "Control Theory: History, Mathematical Achievements and Perspectives". citeseerx.ist.psu.edu. Retrieved 2018-02-27.{{cite web}}: CS1 maint: multiple names: authors list (link)

— Preceding unsigned comment added by Sasuke Sarutobi (talk • contribs) 27 February 2018 (UTC)

Proposed merge of Classical control theory into Control theory

Merge. (non-admin closure) ^Queen of _Hearts 22:04, 7 January 2024 (UTC)[reply]

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

Classical control theory is currently just a poor duplication of material found elsewhere. fgnievinski (talk) 06:23, 11 March 2023 (UTC)[reply]

Support, for above reason.

--Chetvorno^TALK 16:34, 11 March 2023 (UTC)[reply]

Neutral, although I could be swayed toward support.Constant314 (talk) 18:58, 11 March 2023 (UTC)[reply]

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

[1] Fernández-Cara, E., Zuazua, E. "Control Theory: History, Mathematical Achievements and Perspectives". citeseerx.ist.psu.edu. Retrieved 2018-02-27.{{cite web}}: CS1 maint: multiple names: authors list (link)

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