Results 101 to 110 of about 3,116 (278)

A novel direct instantaneous torque control strategy in permanent magnet-assisted switched reluctance motor based on optimization of conduction angle

Alexandria Engineering Journal
A novel direct instantaneous torque control (DITC) strategy based on optimized conduction angle is proposed with the aim of reducing the torque ripple of permanent magnet-assisted switched reluctance motor (PMa-SRM) during the two-phase exchange (TpE ...
Chaozhi Huang, Yanwen Sun, Junxin Xu, Huihan Li   +3 more
doaj   +1 more source

Guiding and Manipulating Light Fields in Microstructured Liquid Crystals

Advanced Physics Research, EarlyView.
This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang, Yong‐shuai Li, Jin‐hui Chen   +2 more
wiley   +1 more source

Enhanced Direct Torque Control Prediction for Torque Ripple Reduction in Switched Reluctance Motors

Energies
In this study, a novel direct torque control (DTC) strategy is proposed to mitigate the torque ripple issue inherent in switched reluctance motors (SRMs), which is caused by the double salient pole configuration and the pulse power supply mode.
Meiguang Jiang, Chuanwei Li, Xiangwen Lv, Cheng Liu   +3 more
doaj   +1 more source

Minimization of torque ripple in switched reluctance motor drives using an enhanced direct instantaneous control

Torque ripple is an inherent characteristic of switched reluctance motor drives due to its double salient geometry and it is a serious drawback in applications thatrequire smooth torque and high dynamic performances. This paper presents new contributions
Blanqué Molina, Balduino, Castro Soriano, Javier, Andrada Gascón, Pedro   +2 more
core  

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Resumen de la trayectoria de las técnicas de control en motores de imán permanente; A review about trajectory control techniques for interior permanent magnet synchronous motors;

Revista Científica de Ingeniería Energética, 2011
El motor sincrónico de imán permanente posee características especiales para operar a velocidad variableque lo distinguen de los otros tipos de motores de corriente alterna (CA). Debido a la configuración especialdel rotor, su
Ivonne Yznaga Blanco, He Yi Kang, Boris L Corral Martínez   +2 more
doaj  

Drug‐coated balloons: From conventional designs to next‐generation innovations in vascular therapy

BMEMat, EarlyView.
This review traces the evolution of drug‐coated balloons (DCBs) from conventional designs to next‐generation platforms. We highlight innovations in balloon engineering, coating technologies, and therapeutic agents that enhance localized drug delivery while addressing challenges in efficiency, safety, and biocompatibility for vascular and emerging non ...
Lu Zhang, Jiawei Cui, Jin Wang, Manfred F. Maitz, Rifang Luo, Yunbing Wang   +5 more
wiley   +1 more source

Modified direct torque control of matrix converter fed induction motor drive

, 2006
In this paper, a torque ripple minimization technique with constant switching frequency is proposed for direct torque control (DTC) of a matrix converter fed squirrel cage induction motor drive.
Singh, Bhim, Ravi, Jally, Jally Ravi, Bhim Singh   +3 more
core   +1 more source

A hidden Markov model and reinforcement learning‐based strategy for fault‐tolerant control

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study introduces a data‐driven control strategy integrating hidden Markov models (HMM) and reinforcement learning (RL) to achieve resilient, fault‐tolerant operation against persistent disturbances in nonlinear chemical processes. Called hidden Markov model and reinforcement learning (HMMRL), this strategy is evaluated in two case studies
Tamera Leitao, Debaprasad Dutta, Simant R. Upreti   +2 more
wiley   +1 more source

Three-Vector-Based Model Predictive Direct Speed Control Strategy for Enhanced Target Tracking in Risley Prism Systems

Actuators
When the Risley prism pair is used for target tracking, the nonlinear relationship between beam deflection and prism rotation makes tracking performance highly dependent on precise and stable motor control over a wide speed range.
Hao Lu, Bo Liu, Jianwen Guo, Yuqi Shan, Hao Yi, Yun Jiang, Lan Luo, Feifan He, Taibei Liu, Zixun Wang, Yongqi Yang   +10 more
doaj   +1 more source