Results 71 to 80 of about 28,429 (228)

Fiber Bragg Grating Force Sensors for Minimally Invasive Surgery: State of the Art, Challenges, and Opportunities

SmartBot, EarlyView.
This article reviews the application of fiber Bragg grating (FBG) technology for precise force sensing in minimally invasive surgery. It outlines the fundamental working principles and algorithms used to interpret sensor data. The text surveys clinical applications across various medical fields, such as ophthalmology and vascular intervention (Table of
Shiyuan Dong, Tianqi Huang, Lingyu Chen, Shucong Yin, Qing Chang, Dingpei Han, Yangxi Li, Boyu Zhang, Hongen Liao, Fang Chen   +9 more
wiley   +1 more source

Controle De Velocidade De Baixo Custo Para Motores De Indução Sem Sensores Mecânicos

Eletrônica de Potência, 2007
Este artigo propõe um controle direto orientado pelo campo para um servo de velocidade sensorless usando motor de indução trifásico. A principal motivação deste artigo é a substituição dos elementos de medida mais onerosos, encoder e sensores de efeito ...
Helder Tavares Câmara, Rafael Cardoso, Rodrigo Zelir Azzolin, Hilton Abílio Gründling   +3 more
doaj   +1 more source

Motion control and vibration suppression of flexible lumped systems via sensorless LQR control [PDF]

, 2011
This work attempts to achieve motion control along with vibration suppression of flexible systems by developing a sensorless closed loop LQR controller. Vibration suppression is used as a performance index that has to be minimized so that motion control ...
Celebi, Besir, Cevik, Gulnihal, Mehmet, Berkem, Sabanovic, Asif, Shoukry Mohammed Khalil, Islam, Çelebi, Beşir, Çevik, Gülnihal, Şabanoviç, Asif   +7 more
core  

Comparison of Intraoperative Doppler Flow Measurements and Algorithmic Flow Estimations in Patients Undergoing Durable Left Ventricular Assist Device Implantation

Artificial Organs, EarlyView.
Direct intraoperative HeartMate 3 LVAD flow measurements using an ultrasonic probe revealed consistently higher values by approximately 0.5 L/min compared to device‐estimated flows. This discrepancy remained stable across pump speed settings, highlighting the importance of distinguishing measured from estimated flow in HeartMate 3 patients.
Gaik Nersesian, Anna Stegmann, Daniel Lewin, Yuriy Hrytsyna, Leonard Pitts, Julius Kaemmel, Marian Kukucka, Alexander Mladenow, Lisa Garczarek, Julia Stein, Friedrich Kaufmann, Volkmar Falk, Evgenij Potapov, Pia Lanmueller   +13 more
wiley   +1 more source

Estimation of Saturation of Permanent-Magnet Synchronous Motors Through an Energy-Based Model [PDF]

, 2011
We propose a parametric model of the saturated Permanent-Magnet Synchronous Motor (PMSM) together with an estimation method of the magnetic parameters. The model is based on an energy function which simply encompasses the saturation effects. Injection of
Jebai, AlKassem, Malrait, Francois, Martin, Philippe, Rouchon, Pierre   +3 more
core   +2 more sources

A Neural Network‐Based Self‐Sensing Embedded Position Control System for Shape Memory Alloy Wire Actuators

Advanced Intelligent Systems, Volume 8, Issue 4, April 2026.
Shape memory alloy wires exhibit thermally induced phase changes that generate actuation strain and resistance variations enabling self‐sensing. However, hysteretic electromechanical behavior complicates accurate state estimation. This paper presents an artificial in‐based self‐sensing method to reconstruct SMA actuator position in real time, achieving
Krunal Koshiya, Gianluca Rizzello, Paul Motzki   +2 more
wiley   +1 more source

Research on sensorless control of induction motor with low switching frequency

工程科学学报
AC induction motors have been widely used in various industries, and their sensorless control system has the advantages of simple structure and low cost. To realize sensorless control of the induction motor, the rotor flux and speed must be observed. The
Xin QI, Jiashi REN, Xiangyang SHI, Yuhang ZHAO, Lingyi LI   +4 more
doaj   +1 more source

A globally exponentially stable position observer for interior permanent magnet synchronous motors

, 2020
The design of a position observer for the interior permanent magnet synchronous motor is a challenging problem that, in spite of many research efforts, remained open for a long time.
Choi, Jongwon, Nam, Kwanghee, Ortega, Romeo, Vukosavic, Slobodan, Yi, Bowen   +4 more
core   +1 more source

Mitigation of cross-saturation effects in resonance-based sensorless switched reluctance drives [PDF]

, 2010
The stator and rotor yoke in a switched reluctance motor form magnetic circuit parts that are typically shared by different phases. If these parts saturate due to the excitation of one phase, this will lead to a change of the magnetic characteristics of ...
Geldhof, Kristof, Melkebeek, Jan, Van den Bossche, Alex   +2 more
core   +2 more sources

Interfacial Chemistry Behind Damage Monitoring in Glass Fiber‐Reinforced Composites: Attempts and Perspectives

Polymer Composites, Volume 47, Issue 4, Page 2925-2954, 20 February 2026.
Role of the modifications at the interface in glass fiber reinforced composites for damage monitoring. ABSTRACT Glass Fiber Reinforced Polymers (GFRPs) are widely used in structural applications but degrade over time due to internal damage. Structural Health Monitoring (SHM) enables early damage detection, improving reliability and reducing maintenance
Marta Colombo, Silvia Mostoni, Giulia Fredi, Carol Rodricks, Gerhard Kalinka, Massimiliano Riva, Andrea Vassallo, Barbara Di Credico, Roberto Scotti, Michele Zappalorto, Massimiliano D'Arienzo   +10 more
wiley   +1 more source