149 research outputs found
Smart Control of Buck Converters using a Switching-based Clustering Algorithm
This project proposes a new approach to the control of switching voltage regulators (buck converters). The method is performed using a switching-based clustering algorithm. The implementations of competing approaches such as a fuzzy-logic controller, proportional integral derivative controller and a neural network based controller are presented in order to compare and evaluate the performance of the switching-based clustering algorithm. The results of the approach show that the proposed method could improve the stability and the performance of the buck converter system by 2.7% in terms of settling time and by 0.6% in terms of the overshoot value
Victoria E. Bonnell and Lynn Hunt, eds. — Beyond the Cultural Turn: New Directions in the Study of Society and Culture
Bacteriochlorophylls modified at position C-3
[3-Vinyl]-bacteriochlorophyll a and related pigments modified at C-3 and/or C-132 have been synthesized from bacteriochlorophyll a. The reactivity at C-3 is strongly influenced by the C-132 substituent, and vice versa. Spectroscopical data and comparison among derivatives modified at the isocyclic ring indicate that this interaction is related to formation of an intermediate enol(ate) structure. The possible role of enol(ate) formation in (bacterio)chlorophylls in nature is discussed
The unexpected reduction of the vinyl group of chlorophyll B by sodium borohydriede in methanolic extracts of maize leaves and its inhibition by 8-hydroxyquinoline
Smart Control of Buck Converters using a Switching-based Clustering Algorithm
This paper proposes a new approach to the control of switching voltage regulators (buck converters). The method is performed using a switching-based clustering algorithm. The implementations of competing approaches such as a fuzzy-logic controller, proportional integral derivative controller and a neural network based controller are presented in order to compare and evaluate the performance of the switching-based clustering algorithm. The results of the approach show that the proposed method could improve the stability and the performance of the buck converter system by 2.7% in terms of settling time and by 0.6% in terms of the overshoot value as compared to other control methods for buck converters
The unexpected reduction of the vinyl-group of chlorophyll b by sodium borohydride in methanolic extracts of maize leaves and its inhibition by 8-Hydroxychinoline
STUDIES ON PLANT BILE PIGMENTS.
The (4 Z, 10 2, 15Ej-2,3-dihydrobilindione 4, along with the fully unsaturated (E, 2, Z)-analogue
8, has been prepared from the corresponding (Z, Z, Z)-isomer by a variation of Falk's method
(Falk et ul., 1980). The photochemical and acid-catalyzed back-reactions have been studied by UV-vis
and 'H-NMR spectroscopy
Pangolin Habitat Environment Remote Monitoring System Senior Computer Engineering Capstone Design Project
The Senior Computer Engineering Capstone Design project is a system designed to remotely monitor the environment of its pangolin habitats. This system consists of sensors attached to microcontrollers set within the environment, a database that take readings and stores information, and a website that allows zoo employees to access the information from anywhere in the zoo. We have implemented and tested our system locally to confirm its quality and efficiency. Through the use of this system, the Zoo will be able to monitor the environment of habitats and rapidly respond to any situation where the environment needs to be adjusted
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