Results 51 to 60 of about 6,256 (231)

Planning and Control Framework for a Quadruped Robot With Changeable Configuration

open access: yesAdvanced Intelligent Systems, EarlyView.
Multiconfiguration quadruped robots enhance adaptability by switching between mammal‐like and reptile‐like morphologies. This study presents a nonlinear constraint‐based motion planner integrated with a hierarchical whole‐body controller, enabling robust configuration switching and locomotion on complex terrains. Experiments on slopes, irregular bricks,
Guanglin Lu   +5 more
wiley   +1 more source

Cogging torque reduction of Bldc motor using level set based topology optimization incorporating with triangular finite element [PDF]

open access: yes, 2010
Cogging torque in permanent-magnet brushless DC (BLDC) motor causes torque and speed ripples, as well as acoustic noise and vibration, especially in low speed and direct drive applications.
Guo, Y   +4 more
core   +1 more source

Design Challenges to Expand the Functionality of Drones: Deformable Rotorcraft and Nature‐Inspired Flapping Drones

open access: yesAdvanced Intelligent Systems, EarlyView.
This review systematically analyzes deformable drones, including extendable, foldable, and tilting configurations, along with nature‐inspired flapping rotorcraft. By classifying deformation principles and structural mechanisms, design trade‐offs, functional capabilities, and future development potential are highlighted.
Ju‐Hee Lee   +9 more
wiley   +1 more source

Cogging Torque Reduction Based on a New Pre-Slot Technique for a Small Wind Generator

open access: yesEnergies, 2018
Cogging torque is a pulsating, parasitic, and undesired torque ripple intrinsic of the design of a permanent magnet synchronous generator (PMSG), which should be minimized due to its adverse effects: vibration and noise. In addition, as aerodynamic power
Miguel García-Gracia   +3 more
doaj   +1 more source

Optimal torque control of fault-tolerant permanent magnet brushloss machines [PDF]

open access: yes, 2003
Describes a novel optimal torque control strategy for fault-tolerant permanent magnet brushless ac drives operating in both constant torque and constant power modes.
Atallah, K., Howe, D., Wang, J.B.
core   +1 more source

Distributed Formation Control for Heterogeneous Robot Systems Based on Competitive Mechanism

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT This paper presents an adaptive formation control method for a heterogeneous robot swarm, utilising a multilevel formation task tree to model various types of formation tasks and a single‐state distributed k‐winner‐take‐all (S‐DKWTA) algorithm to address the MRTA problem.
Zhenghui Cui, Xiaoyi Gu, Ning Tan
wiley   +1 more source

Double Layer Magnet Design Technique for Cogging Torque Reduction of Dual Rotor Single Stator Axial Flux Brushless DC Motor

open access: yesIranian Journal of Electrical and Electronic Engineering, 2020
Cogging torque is the major limitation of axial flux permanent magnet motors. The reduction of cogging torque during the design process is highly desirable to enhance the overall performance of axial flux permanent magnet motors.
A. N. Patel, B. N. Suthar
doaj  

Reduction of cogging torque of single phase brushless DC motor using flux barrier [PDF]

open access: yes, 2011
This paper deals with the reduction of cogging torque in a single phase brushless DC motor. The constructional features and operating principles of the developed motor is presented.
Abdul Wahab, Noor Izzri   +5 more
core   +1 more source

A Novel Sprayable Fibrinogen/Glycosaminoglycans/Collagen‐Based Bioink for Skin Wound Healing Applied by a Handheld Dual‐Head Airbrush

open access: yesAdvanced Healthcare Materials, Volume 15, Issue 5, 2 February 2026.
A dual‐head airbrush‐based spraying device, combined with a fibrinogen bioink enriched with glycosaminoglycans and collagen, enables the delivery of biomaterials and cells to promote wound healing. This system demonstrates effective skin regeneration in vitro and in vivo, with comparable results to autografts.
Paula Pleguezuelos‐Beltrán   +7 more
wiley   +1 more source

The implications of the use of composite materials in electromagnetic device topology and shape optimization [PDF]

open access: yes, 2008
The use of soft magnetic composites (SMCs) provides electromagnetic device designers with serious challenges. While such materials have the potential of allowing novel 3-D topologies to be used, as well as providing major advantages in recycling at the ...
Kim, D.H., Lowther, D.A., Sykulski, J.K.
core   +1 more source

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