Results 41 to 50 of about 229,107 (335)

Optimized Time–Frequency Analysis for Induction Motor Fault Detection Using Hybrid Differential Evolution and Deep Learning Techniques

International Journal of Adaptive Control and Signal Processing, EarlyView.
Workflow of the parameter optimization process for ITSC fault detection, applying Differential Evolution optimization and the Smooth Pseudo Wigner‐Ville Distribution for signal processing. The optimized parameters are then used in the failure identification pipeline, which combines the signal processing with a YOLO‐based architecture for fault severity
Rafael Martini Silva, Avyner Lorran de Oliveira Vitor, Marcelo Favoretto Castoldi, Alessandro Goedtel, Wesley Angelino Souza   +4 more
wiley   +1 more source

Resonance Effect Decrease and Accuracy Increase of Piezoelectric Accelerometer Measurement by Appropriate Choice of Frequency Range

Shock and Vibration, 2018
A suitable piezoelectric accelerometer mathematical model is proposed to extract a relationship of motion relative frequency as a function of natural frequency.
Zine Ghemari, Saad Salah, Rabah Bourenane   +2 more
doaj   +1 more source

A New Z-axis Resonant Micro-Accelerometer Based on Electrostatic Stiffness

Sensors, 2015
Presented in the paper is the design, the simulation, the fabrication and the experiment of a new z-axis resonant accelerometer based on the electrostatic stiffness. The new z-axis resonant micro-accelerometer, which consists of a torsional accelerometer
Bo Yang, Xingjun Wang, Bo Dai, Xiaojun Liu   +3 more
doaj   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

A Method for Gravitational Apparent Acceleration Identification and Accelerometer Bias Estimation

IEEE Access, 2019
Accelerometer bias in an inertial navigation system (INS) is the key factor determining the navigation accuracy. Two methods, named separated calibration and system calibration are always used for acceleration bias calibration.
Xixiang Liu, Songbing Wang, Xiaole Guo, Wenqiang Yang, Guangfu Xu   +4 more
doaj   +1 more source

Accuracy of Accelerometer-Based Navigation System Perseus for the Tibial Cut in Total Knee Arthroplasty: No Superiority Compared to Mechanical Instrumentation in Current Practice

Applied Sciences, 2023
Knee alignment after total knee arthroplasty (TKA) is essential for implant survival. Several studies on accelerometer-based navigation systems have given controversial results, with or without improvement in knee alignment.
Léopold Joseph, Cécile Batailler, Sébastien Lustig, Elvire Servien   +3 more
doaj   +1 more source

Rectilinear accelerometer possesses self- calibration feature [PDF]

, 1966
Rectilinear accelerometer operates from an ac source with a phase-sensitive ac voltage output proportional to the applied accelerations. The unit includes an independent circuit for self-test which provides a sensor output simulating an acceleration ...
Henderson, R. B.
core   +1 more source

Young people's views on accelerometer use in physical activity research : findings from a user involvement investigation [PDF]

, 2012
The use of accelerometers to objectively measure physical activity is important in understanding young people's behaviours, as physical activity plays a key part in obesity prevention and treatment.
Callens, Claire, Kirby, J. (Joanna), Lang, Beckie, Robertson, Wendy, Thorogood, Margaret, Tibbins, Carly, Tigbe, William W.   +6 more
core   +3 more sources

Bioinspired Materials, Designs, and Manufacturing Strategies for Advanced Impact‐Resistant Helmets

Advanced Engineering Materials, EarlyView.
This review explores how bioinspired materials, structures, and manufacturing strategies transform helmet design to achieve enhanced impact resistance. Drawing inspiration from nacre, porcupine quills, beetle exoskeletons, and skull architectures, it highlights advances in auxetic lattices, nanocomposites, and functionally graded foams.
Joseph Schlager, Yi Jin, Mohammad Faruk, Jay Alberts, C. Chase Cao   +4 more
wiley   +1 more source

High Temperature Endurable Fiber Optic Accelerometer

Shock and Vibration, 2014
This paper presents a low frequency fiber optic accelerometer for application in high temperature environments of civil engineering structures. The reflection-based extrinsic fiber optic accelerometer developed in this study consists of a transmissive ...
Yeon-Gwan Lee, Jin-Hyuk Kim, Chun-Gon Kim   +2 more
doaj   +1 more source