Journal ArticleDOI
Feedback for physicists: A tutorial essay on control
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TLDR
In this paper, a tutorial essay aims to give enough of the formal elements of control theory to satisfy the experimentalist designing or running a typical physics experiment and enough to satisfy a theorist wishing to understand its broader intellectual context.Abstract:
Feedback and control theory are important ideas that should form part of the education of a physicist but rarely do. This tutorial essay aims to give enough of the formal elements of control theory to satisfy the experimentalist designing or running a typical physics experiment and enough to satisfy the theorist wishing to understand its broader intellectual context. The level is generally simple, although more advanced methods are also introduced. Several types of applications are discussed, as the practical uses of feedback extend far beyond the simple regulation problems where it is most often employed. Sketches are then provided of some of the broader implications and applications of control theory, especially in biology, which are topics of active research.read more
Citations
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Journal ArticleDOI
Sub-Doppler modulation spectroscopy of potassium for laser stabilization
L. Mudarikwa,K. Pahwa,J. Goldwin +2 more
TL;DR: In this article, the authors studied modulation spectroscopy of the potassium D2 transitions at 766.7 nm and compared spectra obtained by direct modulation of the probe beam and those using modulation transfer from the pump via nonlinear mixing.
Journal ArticleDOI
Real-Time Calibration of a Feedback Trap
TL;DR: It is shown that a recursive maximum likelihood (RML) algorithm can allow real-time measurement and control of electric and stochastic forces over time scales of hours.
Journal ArticleDOI
Cross-influence between the two servo loops of a fully stabilized Er:fiber optical frequency comb
Vladimir Dolgovskiy,Nikola Bucalovic,Pierre Thomann,C. Schori,Gianni Di Domenico,Stéphane Schilt +5 more
TL;DR: In this article, the authors studied the impact of the cross-coupling between the two servo loops used to stabilize the repetition rate frep and the carrier-envelope offset (CEO) frequency fCEO in a commercial Er:fiber frequency comb, based on the combination of experimental measurements and a model of the coupled loops.
Proceedings ArticleDOI
Feedforward control of a piezoelectric flexure stage for AFM
Yang Li,John Bechhoefer +1 more
TL;DR: A simple feedforward technique is developed that increases the effective bandwidth of the positioning stage by a factor of 15 over its standard operation and introduces a model-free variant that is simpler to set up, performs better, and is more robust to system changes.
Journal ArticleDOI
Oscillation death in coupled oscillators
TL;DR: In this paper, the authors studied dynamical behaviors in coupled nonlinear oscillators and found that under certain conditions, a whole coupled oscillator system can cease oscillation and transfer to a globally nonuniform stationary state, i.e., the oscillation death (OD) state.
References
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The Structure and Function of Complex Networks
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