Results 31 to 40 of about 1,969 (191)

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

A Carrier-Based PWM Strategy Providing Neutral-Point Voltage Oscillation Elimination for Multi-Phase Neutral Point Clamped 3-Level Inverter

IEEE Access, 2019
General pulse width modulation (PWM) model for multi-phase neutral point (NP) clamped (NPC) 3-level inverter (3LI) is described. A novel PWM strategy for N -phase NPC 3LI with unconditional NP voltage balance is proposed as well as its carrier-based ...
Weidong Jiang, Xinmei Huang, Jinping Wang, Jianing Wang, Jinsong Li   +4 more
doaj   +1 more source

A New Concept of PWM Duty Cycle Computation Using the Barycentric Coordinates in a Three–Dimensional Voltage Vectors Arrangement

IEEE Access, 2020
The paper presents a novel approach to the Pulse Width Modulation (PWM) duty cycle computing for complex or irregular voltage vector arrangements in the two (2D) and three-dimensional (3D) Cartesian coordinate systems.
Pawel Szczepankowski, Nikolai Poliakov, Denis Vertegel, Krzysztof Jakub Szwarc, Ryszard Strzelecki   +4 more
doaj   +1 more source

TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms

Advanced Robotics Research, EarlyView.
A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello, Tian Lan, Salaheldin Hassan, Maximilian Leutschafft, Erdem Ekinci, Sophie F. Armanini, Mirko Kovac, Basaran Bahadir Kocer   +7 more
wiley   +1 more source

Analisa Kinerja Sinusoidal PWM Inverter untuk Pengaturan Kecepatan Motor Induksi Tiga Fasa

Teknika, 2016
PWM (pengaturan lebar pulsa) merupakan salah satu teknik yang baik untuk digunakan dalam sistem kendali (control system) saat ini. Pengaturan lebar modulasi dipergunakan di berbagai bidang yang sangat luas, salah satu diantaranya adalah pengaturan ...
Heri Haryanto, Vicky Immanuel
doaj   +1 more source

Gait Analysis of Pak Biawak: A Necrobot Lizard Built using the Skeleton of an Asian Water Monitor (Varanus Salvator)

Advanced Robotics Research, EarlyView.
Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds, Donan Satria Yudha, Parvez Alam   +2 more
wiley   +1 more source

Analyses, Modeling, and SVPWM Control of a Three-Level T-NPC Inverter to Reduce Common-Mode Voltage Under Open-Circuit Fault in a Neutral-Point Switch

IEEE Access
This paper proposes a new space vector pulse-width modulation technique for reducing the common-mode voltage (SVPWM2) in a three-level T-type neutral-point-clamped voltage source inverter working under switch-open-circuit fault on a neutral-point ...
Hong-Phong Nguyen Le, Khoa Dang Pham, Nho-van Nguyen   +2 more
doaj   +1 more source

Position Control of BLDC Motor with Space Vector PWM Method

Gazi Üniversitesi Fen Bilimleri Dergisi, 2020
In order to improve the performance of Brushless Direct Current (BLDC) Motor, Space Vector Pulse Width Modulation (SVPWM) based controller technique is applied in this paper.
Süleyman KOKUNDU, M. Timur AYDEMİR
doaj   +1 more source

A Generalized Approach for Determining the Current Ripple RMS in Four-Leg Inverters with the Neutral Inductor

Energies, 2023
This manuscript proposes a novel approach for determining phase and neutral-current-ripple RMS in grid-connected four-leg inverters with the neutral inductor.
Riccardo Mandrioli, Francesco Lo Franco, Mattia Ricco, Gabriele Grandi   +3 more
doaj   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source