Search results for "Anti-aliasing"

showing 2 items of 2 documents

Subband image coding using filter banks with non-uniform passband distribution

2002

Subband filter banks with non-uniform passband distribution in frequency domain are studied. Several design examples are presented and compared with conventional uniform bandwidth filter banks. Image coding results show that filter banks with non-uniform bandwidth outperform filter banks with uniform bandwidth, especially in low bit rate coding.

Filter designControl theoryComputer scienceBandwidth (signal processing)Elliptic filterPrototype filterFilter bankBand-stop filterAlgorithmPassbandAnti-aliasing filterProceedings of ICICS, 1997 International Conference on Information, Communications and Signal Processing. Theme: Trends in Information Systems Engineering and Wireless Multimedia Communications (Cat. No.97TH8237)
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A New Generalized Robust Predictive Current Control for Grid-Connected Inverters Compensates Anti-Aliasing Filters Delay

2016

In this paper, a new predictive control for grid-connected inverters is presented, which provides the best performance in terms of transient response and stability margins when analog filters in current sensing circuits are used. These filters are necessary to avoid aliasing in the A/D conversion process, which causes an important ripple on injected current into the grid and increases the total harmonic distortion. However, predictive controls are very sensitive to delays on the acquisitions, so when such anti-aliasing filters are used a reduction of stability margins is produced and the transient response is affected. The proposed predictive control allows to compensate the effect of the f…

EngineeringTotal harmonic distortionbusiness.industry020209 energy020208 electrical & electronic engineeringRipple02 engineering and technologyFilter (signal processing)Anti-aliasingAnalogue filterModel predictive controlControl and Systems EngineeringAliasingControl theory0202 electrical engineering electronic engineering information engineeringElectronic engineeringTransient responseElectrical and Electronic EngineeringbusinessIEEE Transactions on Industrial Electronics
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