Low noise chopper-stabilized instrumentation amplifier with a ripple reduction loop
Sign Up to like & getrecommendations! Published in 2018 at "Analog Integrated Circuits and Signal Processing"
DOI: 10.1007/s10470-018-1214-5
Abstract: This paper presents a low noise and residual offset chopper-stabilized precision instrumentation amplifier intended for use in measurement systems. Conventional chopper-stabilized instrumentation amplifier introduces a necessary trade-off between the low residual offset and noise provided… read more here.
Keywords: ripple; instrumentation amplifier; stabilized instrumentation; chopper stabilized ... See more keywords
Turbulent channel flow perturbed by triangular ripples
Sign Up to like & getrecommendations! Published in 2018 at "Journal of The Brazilian Society of Mechanical Sciences and Engineering"
DOI: 10.1007/s40430-018-1050-7
Abstract: This paper presents an experimental investigation of the perturbation of a turbulent closed-conduit flow by two-dimensional triangular ripples. Two ripple configurations were employed: one single asymmetric triangular ripple, and two consecutive asymmetric triangular ripples, all… read more here.
Keywords: ripple; turbulent channel; triangular ripples; channel flow ... See more keywords
Computational Investigation of Ripple Dynamics in Biofilms in Flowing Systems.
Sign Up to like & getrecommendations! Published in 2018 at "Biophysical journal"
DOI: 10.1016/j.bpj.2018.08.016
Abstract: Biofilms are collections of microorganisms that aggregate using a self-produced matrix of extracellular polymeric substance. It has been broadly demonstrated that many microbial infections in the body, including dental plaque, involve biofilms. While studying experimental… read more here.
Keywords: dynamics biofilms; ripple; computational investigation; investigation ripple ... See more keywords
Laboratory experiments on the role of hysteresis, defect dynamics and initial perturbation on wave-generated ripple development
Sign Up to like & getrecommendations! Published in 2019 at "Estuarine, Coastal and Shelf Science"
DOI: 10.1016/j.ecss.2019.05.003
Abstract: Abstract We performed a series of laboratory experiments to study the growth and development of wave-generated ripples under constant and varying conditions. There are two aspects of our study. First, under time varying wave conditions,… read more here.
Keywords: wave generated; hysteresis; initial perturbation; wave ... See more keywords
Study of instantaneous flow behind a single fixed ripple
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Hydro-environment Research"
DOI: 10.1016/j.jher.2018.03.002
Abstract: Abstract Two-component velocity measurement using Particle Image Velocimetry (PIV) and flow visualizations have been performed to investigate the different hydrodynamic mechanisms process over a fixed single ripple. Flow patterns over ripple are studied for five… read more here.
Keywords: instantaneous flow; ripple; study instantaneous; behind single ... See more keywords
Collisional alpha transport in a weakly rippled magnetic field
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377819000151
Abstract: To properly treat the collisional transport of alpha particles due to a weakly rippled tokamak magnetic field the tangential magnetic drift due to its gradient (the $\unicode[STIX]{x1D735}B$ drift) and pitch angle scatter must be retained.… read more here.
Keywords: field; transport; boundary layer; magnetic field ... See more keywords
Quasi-static 3D structure of graphene ripple measured using aberration-corrected TEM.
Sign Up to like & getrecommendations! Published in 2021 at "Nanoscale"
DOI: 10.1039/d1nr00237f
Abstract: Free-standing graphene has a three-dimensional (3D) structure, called a ripple, rather than a perfect two-dimensional (2D) crystal. Since theoretical calculations suggest that a ripple strongly influences various fundamental physicochemical properties of graphene, it is important… read more here.
Keywords: ripple; using aberration; graphene; aberration corrected ... See more keywords
Modelling, control and performance analysis of a single-stage single-phase inverter with reduced low-frequency input current ripple
Sign Up to like & getrecommendations! Published in 2018 at "Iet Power Electronics"
DOI: 10.1049/iet-pel.2017.0646
Abstract: A large amount of ripple at twice the output frequency will emerge in the input current due to the pulsating output power in a single-phase inverter. A current-fed-type single-stage single-phase inverter is investigated. Based on… read more here.
Keywords: inverter; single stage; ripple; input ... See more keywords
Design a H-bridge low ripple and high bandwidth air core magnet corrector power supply in NSRRC
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Instrumentation"
DOI: 10.1088/1748-0221/16/11/t11007
Abstract: This paper is the study of a low-current-ripple and high-bandwidth corrector power supply. The main circuit of this power supply is using a full bridge (H-bridge) structure, and the output current through the high-precision direct… read more here.
Keywords: power supply; bandwidth; power; ripple ... See more keywords
Analysis and Suppression of Phase Unbalance Induced Force Ripples in Permanent Magnet Linear Motors
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3141061
Abstract: Low force ripples from permanent magnet linear motors (PMLMs) are typically essential requirements in a wide range of demanding control applications with high motion quality. Apart from the sources present in rotary PM machines, phase… read more here.
Keywords: ripple; phase unbalance; force ripples; phase ... See more keywords
Analysis and Optimization of Torque Ripple Reduction Strategy of Surface-Mounted Permanent-Magnet Motors in Flux-Weakening Region Based on Genetic Algorithm
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Industry Applications"
DOI: 10.1109/tia.2021.3074609
Abstract: One of the parameters required for a high-performance drive of a surface-mounted permanent magnet synchronous motor (SPMSM) operating in the flux-weakening region is the torque ripple reduction. In general, the torque ripple results from many… read more here.
Keywords: flux weakening; weakening region; strategy; torque ripple ... See more keywords