Results 141 to 150 of about 82,622 (335)

A Novel Crawling Robot Based on the Hexagonal Mesh Structure and Enhanced PID Control Strategy

Journal of Field Robotics, EarlyView.
ABSTRACT The locomotion of crawling robots is similar to that of caterpillars, relying on foot adhesion and body contraction to ensure flexible movement without compromising stability. However, most existing pneumatic soft crawling robots are incapable of simultaneously achieving forward, backward, turning, and climbing capabilities.
Meng Hongjun, Ren Yuke, Wei Jingtao, Zhang Shupeng, Zhang Wei   +4 more
wiley   +1 more source

Mathematical Vector Quantity Modulated Three Phase Four Leg Inverter

, 2016
In this paper it has been shown that any unbalanced and distorted three-phase currents can be efficiently generated as output from a four-leg (4L) inverter with mathematical implementation of three dimensional (3D) space vector pulse width modulation (SVPWM) in \( \upalpha{ - }\upbeta{ - }\upgamma \) frame.
Bhaskar Bhattacharya, Ajoy Kumar Chakraborty   +1 more
openaire   +1 more source

Efficient and Adaptive Autonomous Guidance and Control of Planetary Rover With Improved Traction Controller and Dynamic Cost Map

Journal of Field Robotics, EarlyView.
ABSTRACT Planetary exploration is rapidly gaining importance within the space research community. Autonomous locomotion of rovers requires consideration of several mobility aspects to ensure safety, including avoiding hazardous areas that can cause the robot to become immobilized in soft soil or damaged in sharp terrains.
Alessio De Luca, Luca Muratore, Nikos G. Tsagarakis, Martin Azkarate   +3 more
wiley   +1 more source

Space Vector Modulation Technique to Reduce Leakage Current of a Transformerless Three-Phase Four-Leg Photovoltaic System

Iranian Journal of Electrical and Electronic Engineering, 2017
Photovoltaic systems integrated to the grid have received considerable attention around the world. They can be connected to the electrical grid via galvanic isolation (transformer) or without it (transformerless).
F. Hasanzad, H. Rastegar, G. B. Gharehpetian, M. Pichan   +3 more
doaj  

Probing the Energy Trilemma Pillars: Do Innovation Pathways Deliver Cleaner and More Equitable Energy Systems?

Sustainable Development, EarlyView.
ABSTRACT Balancing reliable energy supply, equitable access, and environmental sustainability is a central challenge of the global energy transition. This study examines how innovation influences the energy trilemma by shaping energy security, energy equity, and environmental sustainability across 115 countries from 2011 to 2023.
Kingsley Imandojemu, Omozele Lynda Showunmi, Felix Orole, Damilola Felix Eluyela, Hammed Oluwaseyi Musibau, Romanus Osabohien   +5 more
wiley   +1 more source

The Edification of Manuela Xiqués: Slavery, Finance, Biography, and the Construction of Modern Barcelona

Gender &History, EarlyView.
ABSTRACT An analysis of the dual biographies, economic and domestic, of Manuela Xiqués, an enslaver from nineteenth‐century Cuba and Spain, deepens our understanding of the role of European and Creole women in the nineteenth‐century Atlantic. This essay foregrounds the role of literature, namely family biography, as a locus of the processes of ...
Lisa Surwillo, Martín Rodrigo Alharilla
wiley   +1 more source

High-power converters for space applications [PDF]

Phase 1 was a concept definition effort to extend space-type dc/dc converter technology to the megawatt level with a weight of less than 0.1 kg/kW (220 lb./MW). Two system designs were evaluated in Phase 1.
Cooper, Randy, Park, J. N.
core   +1 more source

Iflaviruses in arthropods: when small is mighty

Insect Science, EarlyView.
Many arthropod species harbor iflaviruses, which often cause covert (asymptomatic) infections, but may still affect host fitness. We review the impact of iflaviruses on arthropod fitness, immunity, behaviour as well as the iflavirus’ host range, transmission, tissue tropism and the interactions with other microorganisms within arthropods.
Annamaria Mattia, Hannah‐Isadora Huditz, Monique M. van Oers, Vera I.D. Ros   +3 more
wiley   +1 more source

Current Compensation Method in a Distribution System Based on a Four-Leg Inverter under Unbalanced Load Conditions Using an Artificial Neural Network

Energies
This study proposes an unbalanced current compensation method based on a four-leg inverter using an artificial neural network (ANN) under unbalanced load conditions.
Tae-Gyu Kim, Chang-Gyun An, Junsin Yi, Chung-Yuen Won   +3 more
doaj   +1 more source

Design and Analysis of Three-Phase Three-Level PWM Inverter [PDF]

, 2010
Design of three-phase three level PWM inverter and analysis of the output current harmonics are presented in this paper. The three-level inverter is designed to supply three-phase load and it is controlled by FPGA under several modulation techniques ...
Dahono, Pekik Argo
core