Results 31 to 40 of about 41,018 (301)
In-fiber subpicosecond pulse shaping for nonlinear optical telecommunication data processing at 640 Gbit/s [PDF]
, 2012 We review recent work on all-fiber (long-period fiber grating) devices for optical pulse shaping, particularly flat-top pulse generation, down to the subpicosecond range and their application for nonlinear switching (demultiplexing) of optical time ...
A. T. Clausen +26 more
core +1 more source
CLOSED-LOOP CONTROL SYSTEM FOR METAL POWDER LASER SHAPING PROCESS [PDF]
, 2006 The Metal Powder Laser Shaping (MPLS) technology is a new manufacturing technology based on the theory of Rapid Prototyping. MPLS process is affected by multiple factors, such as the power of the laser, the scanning speed of the laser, the feeding rate ...
Xing F(邢飞) +2 more
core +2 more sources
Theory and Analysis of the Loop Antenna and Ω-Shaped Loop-Dipole Antenna
IEEE Open Journal of Antennas and Propagation, 2022 This paper first examines and corrects Storer's theory of circular loop antennas, and then investigates theoretically the proposed Ω-shaped loop-dipole antenna. Special emphasis is given to the analysis of the effect of the higher-order terms of the Fourier series as a remainder on the current distribution, input impedance, and radiation patterns of ...
Yulin Fang, Yue Ping Zhang
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Determination of the True Shape of Coronal Loops
Solar Physics, 2008 Using line of sight velocity measurements from the SUMER and CDS instruments aboard SOHO, in conjunction with a simple geometrical model, we reconstructed the true, 3D shape and the velocity of plasma flow along coronal loops. The projection of the loop on the sky and the position of the footpoints define a family of curves.
Alissandrakis, C. E. +2 more
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IEEE Access, 2017 The classical loop shaping is a design procedure that explicitly involves the shaping of the open loop transfer function L(s), within a desired frequency spectrum by manipulating the poles, zeros, and gain of the controller C(s).
Jose Manuel Diaz +3 more
doaj +1 more source
loop-shaping control of azimuthal combustion instabilities in annular combustors
Journal of Low Frequency Noise, Vibration and Active Control, 2021 Lean combustion technique and annular geometries are preferred in aero-engines and gas turbines, which however may lead to azimuthal combustion instabilities. Active control can be used to stabilize combustion instabilities.
Sheng Feng, Jingxuan Li
doaj +1 more source
Trajectory-Free Control of Lower-Limb Exoskeletons Through Underactuated Total Energy Shaping
IEEE Access, 2021 Kinematic control approaches for exoskeletons replicate normative joint kinematics associated with one specific task and user at a time, which makes it difficult to adjust to continuously-varying activities during gait training.
Ge Lv, Jianping Lin, Robert D. Gregg
doaj +1 more source
The shape of pinned forced polymer loops
Soft Matter, 2019 In this work, we provide analytical theory to describe shapes of pinned polymer loops under external force.
Wenwen Huang, Vasily Zaburdaev
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A grating-based OCDMA coding:decoding system incorporating a nonlinear optical loop mirror for improved code recognition and noise reduction [PDF]
, 2002 We demonstrate an elementary grating-based optical code division multiple access (OCDMA) code generation and recognition system incorporating a nonlinear optical loop mirror (NOLM) within the receiver.
Teh, P.C. +4 more
core +1 more source
IEEE AccessAdaptive Feedforward Cancellation (AFC) is commonly used to counteract periodic disturbances in mechatronic systems in order to enhance the control performance. So far, AFC algorithms either use no or positive damping.
Shota Yabui +2 more
doaj +1 more source