Results 81 to 90 of about 12,904,917 (277)

Deep Deterministic Policy Gradient-Based Actor–Critic Reinforcement Learning for Torque Ripple Minimization in Switched Reluctance Motors

Machines
The aim of this research is to investigate and reduce the torque ripple in Switched Reluctance Motor (SRM) drives, which is one of the major barriers to their acceptance for electric vehicle propulsion applications despite the advantages of robustness ...
Divya Ramasamy, Sundaram Maruthachalam
doaj   +1 more source

Electric Vehicle Longitudinal Stability Control Based on a New Multimachine Nonlinear Model Predictive Direct Torque Control

Journal of Advanced Transportation, 2017
In order to improve the driving performance and the stability of electric vehicles (EVs), a new multimachine robust control, which realizes the acceleration slip regulation (ASR) and antilock braking system (ABS) functions, based on nonlinear model ...
M’hamed Sekour, Kada Hartani, Abdelkader Merah   +2 more
doaj   +1 more source

Enhancing Amphibious Flipper‐Based Locomotion Through Terrain‐Dependent Bayesian Optimization of Central Pattern Generator Control

Advanced Robotics Research, EarlyView.
A sea turtle‐inspired amphibious robot uses simulation‐guided optimization to adapt its flipper coordination to different environments. Sensitivity analysis and multiobjective Bayesian optimization identify terrain‐dependent controllers that are validated on hardware.
Nnamdi C. Chikere, Yasemin Ozkan‐Aydin
wiley   +1 more source

Direct torque control: a practical approach to electric vehicle

, 2006
Electric vehicle (EV) propulsion system using induction motor drive employing direct torque control (DTC) is becoming popular because of quick response and simple configuration.
Gupta, J. R. P., Singh, B., J.R.P. Gupta, Mittal, A. P., Pradeep Jain, A.P. Mittal, Jain, Pradeep, Bhim Singh   +7 more
core   +1 more source

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

From Folding Mechanics to Robotic Function: A Unified Modeling Framework for Compliant Origami

Advanced Science, EarlyView.
A geometry‐consistent DDG framework captures compliant origami deformation from rigid‐like folding to soft panel bending. By tuning crease and panel stiffness, bistable snap‐through responses transform into smooth monostable deformation, enabling programmable stability and robot‐scale locomotion.
Bohan Zhang, Bo Wang, Huajiang Ouyang, Zhigang Wu, Haohao Bi, Jiawei Xu, Mingchao Liu, Weicheng Huang   +7 more
wiley   +1 more source

Direct Instantaneous Torque and Axial Force Control Method for Linear-Rotary Switched Reluctance Motor with Two Radial Windings [PDF]

Dual-winding linear-rotary switched reluctance motors (LRSRMs) suffer from large torque ripple and severe coupling between the torque winding and the axial-force winding.
Shi R, Cao X, He Z, Deng Z, Meng X, Deng X   +5 more
core   +1 more source

A Rigid–Foldable Kirigami‐Inspired Metamorphic Mechanism With Programmable Motion Modes and Self‐Locking

Advanced Science, EarlyView.
Geometric constraint reconfiguration enables a rigid–foldable kirigami‐inspired mechanism to switch between twisting, directional translation, and self‐locking states. By encoding multifunctionality directly into its architecture, the mechanism achieves multimodal motion and passive locking without reassembly, providing a compact platform for adaptive ...
Jianlin Wang, Zhongmin Song, Ketao Zhang
wiley   +1 more source

A Duty Ratio Control Strategy to Reduce Both Torque and Flux Ripples of DTC for Permanent Magnet Synchronous Machines

IEEE Access, 2019
This paper proposes a novel duty ratio modulated direct torque control (DDTC) for permanent magnet synchronous motor drive system to achieve high steady performance and reducing ripples of CDTC, especially the ripple of stator flux, which is ignored in ...
Zheng Zhang, Xinghua Liu
doaj   +1 more source

Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics

Advanced Science, EarlyView.
This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li, Zhongguo Ren, Yiliang Lin, Xianfeng Xia, Tianlong Li, Kai Fung Chan, Philip Wai Yan Chiu, Wei Peng Yong, Mengmeng Sun   +8 more
wiley   +1 more source