Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"natural sampling"”.
-
Digital Pulse Width Modulation: Analysis, Algorithms, and Applications
… of the original signal, the resulting uniform-sampling PWM signal has high distortion. It is possible to eliminate the distortion completely by converting the uniform-sampling input sequence into a natural-sampling sequence before applying it to the PWM modulator. In this thesis, it is shown …
-
The application of communication principles to pulse-width modulated inverters
… inverters.<br/><br/>It is shown that the sampling process inherent in existing pulse-width-modulated inverters is natural sampling. The results of theoretical and experimental analysis shows that this sampling process is the cause or considerable unwanted harmonic distortion at low values …
-
On low-pass reconstruction and stochastic modeling of PWM signals
… is offered as a PWM generator and different sampling methodologies are discussed. For natural sampling, where the input signal is compared to the reference signal directly, lossless sampling conditions are derived. For a sawtooth reference signal, the convergence characteristics between …
-
Assorted results in boolean function complexity, uniform sampling and clique partitions of graphs
… second part, we show that the Partial Rejection Sampling method of Guo, Jerrum and Liu can solve a handful of natural sampling problems that fall outside the guarantees of the authors' original analysis. Finally, we revise and make partial progress on a conjecture of De Caen, Erdős, Pullman and …
-
All-Digital Audio Amplifier
… first upsampled, then converted from uniform to natural sampling to minimize distortion, and finally noise shaped to reduce the time resolution needed by the PWM edges without compromising the signal-to-noise (SNR) ratio. A PWM generator converts samples into pulses, and a switching stage creates …
-
Fabrication, Validation, and Performance Evaluation of a New Sampling System for the In-Situ Chemical Speciation of Chromium Ions in Groundwater Using Supported Liquid Membranes (SLMs)
… to SLM theory. Tank studies that simulated natural sampling condition were also conducted. The results of the tests conducted in the laboratory indicate that the SLM samplers are a stable, reliable, and viable method for Cr speciation. Future directions of this project will include the …