Nonlinear PI Control for High-Order Agents With Unknown High-Frequency Gain Signs Under Switching Topologies
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3044105
Abstract: Existing results on dealing with unknown high-frequency gain signs (UHFGSs) mainly adopt the Nussbaum-type functions. A new kind of control algorithms with nonlinear PI functions are presented to cope with UHFGSs. It is rigorously proven… read more here.
Keywords: frequency gain; high frequency; gain signs; switching topologies ... See more keywords
Adaptive Consensus of Multiagent Systems With Unknown High-Frequency Gain Signs Under Directed Graphs
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Systems, Man, and Cybernetics: Systems"
DOI: 10.1109/tsmc.2018.2810089
Abstract: This paper solves the adaptive consensus problem for first-order linearly parameterized agents with completely nonidentical unknown high-frequency gain signs under directed graphs. A new class of Nussbaum-type function-based algorithms are proposed to handle the unknown… read more here.
Keywords: gain signs; frequency gain; unknown high; high frequency ... See more keywords
Dynamic-range compression and contrast enhancement in swept-source optical coherence tomography systems with a frequency gain compensation amplifier
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Biomedical Optics"
DOI: 10.1117/1.jbo.25.11.110502
Abstract: Abstract. Significance: Optical coherence tomography (OCT) has been widely used in clinical studies. However, the image quality of OCT decreases with increasing imaging depth since the light is rapidly attenuated in biological tissues. Aim: We… read more here.
Keywords: frequency gain; dynamic range; gain compensation; compensation amplifier ... See more keywords
Single-frequency gain-switched ytterbium-doped fiber laser at 1017 nm based on dynamic self-induced grating in a saturable absorber.
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DOI: 10.1364/ol.44.000122
Abstract: We report on a stable single-frequency gain-switched ytterbium-doped fiber (YDF) laser at 1017 nm based on saturable absorber (SA) properties. The laser is realized by utilizing a short-length, high-concentration phosphosilicate YDF that simultaneously acts as an… read more here.
Keywords: frequency gain; gain; single frequency; laser ... See more keywords