Feedback for physicists: A tutorial essay on control
Citations
3 citations
3 citations
Cites background or methods from "Feedback for physicists: A tutorial..."
...37) Rules of thumb suggest gain margins of at least 2, and phase margins of at least 45◦ for stable systems [3]....
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...We examine the problem of controlling and stabilizing the relative phase of the two laser beams through the framework of linear time invariant feedback [3]....
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...To avoid this instability, we require that the magnitude of the open loop gain |G(iω)| is less than 1, when the phase argG(iω) reaches 180◦ [3]....
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3 citations
Cites background from "Feedback for physicists: A tutorial..."
...For stability concerns, it is important to introduce two stability margins [84]....
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...[84] written by John Bechlhefer is a good tutorial essay that describes feedback control more from a physicist’s point of view....
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2 citations
2 citations
References
45,034 citations
"Feedback for physicists: A tutorial..." refers background in this paper
...Recent papers by Touchette and Lloyd (2000, 2004) begin to explore more formally these links and derive a fundamental relationship between the amount of control achievable (“decrease of entropy” in their formulation) and the “mutual information” (Cover and Thomas, 1991) between the dynamical system and the controller created by an initial interaction....
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20,436 citations
"Feedback for physicists: A tutorial..." refers methods in this paper
...For an introduction, see Dutton et al. 1997 ; for full details, see Ljung 1999 ....
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...Alternatively, there are a number of methods that avoid the transfer function completely: from a given input u(t) and measured response y(t), they directly fit to the coefficients of a time-domain model or directly give pole and zero positions (Ljung, 1999)....
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...Alternatively, there are a number of methods that avoid the transfer function completely: from a given input u t and measured response y t , they directly fit to the coefficients of a time-domain model or directly give pole and zero positions Ljung, 1999 ....
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18,415 citations
17,647 citations
"Feedback for physicists: A tutorial..." refers background in this paper
...The structure of such networks is a topic of intense current interest (Albert and Barabási, 2002; Newman, 2003)....
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