-
Calibration of hydrogen Coriolis flow meters using nitrogen and air and investigation of the influence of temperature on measurement accuracy Flow Meas. Instrum. (IF 1.965) Pub Date : 2021-02-12 Marc MacDonald; Marc de Huu; Rémy Maury; Oliver Büker
The performance of four Coriolis flow meters designed for use in hydrogen refuelling stations was evaluated with air and nitrogen by three members of the MetroHyVe JRP consortium; NEL, METAS and CESAME EXADEBIT. A wide range of conditions were tested overall, with gas flow rates ranging from (0.05–2) kg/min and pressures ranging from (20–86) bar. The majority of tests were conducted at nominal pressures
-
From disturbance to measurement: Application of Coriolis meter for two-phase flow with gas bubbles Flow Meas. Instrum. (IF 1.965) Pub Date : 2021-03-05 Hao Zhu; Alfred Rieder; Wolfgang Drahm; Yaoying Lin; Andreas Guettler; Michael Wiesmann; Josef Hubensteiner
Entrained gas has been regarded as disturbance to measurements based on Coriolis meters, since measurement accuracy can be degraded because of this disturbance. Recent research from Endress + Hauser has discovered that different types of gas bubbles, namely free bubbles and suspended bubbles, have various impact on the meter measurement performance. It is important to understand the error mechanism
-
Cluster-based data filtering for manufacturing big data systems J. Equal. Technol. (IF 2.019) Pub Date : 2021-03-05 Yifu Li; Xinwei Deng; Shan Ba; William R. Myers; William A. Brenneman; Steve J. Lange; Ron Zink; Ran Jin
Abstract A manufacturing system collects big and heterogeneous data for tasks such as product quality modeling and data-driven decision-making. However, as the size of data grows, timely and effective data utilization becomes challenging. We propose an unsupervised data filtering method to reduce manufacturing big data sets with multi-variate continuous variables into informative small data sets. Furthermore
-
Numerical Method for Predicting Permeability of Laminated Composites at Cryogenic Temperature AIAA J. (IF 2.108) Pub Date : 2021-03-04 Mingqing Yuan; Haitao Zhao; Yahui Peng; Li Tian; Yongtao Yao; Ji’an Chen
The numerical method for predicting the permeability of a laminated composite based on matrix cracks is improved to meet the application at a cryogenic temperature. The number of the parameters that depends on experiments is reduced in this numerical method to save costs. The semianalytical damaged constitutive model of cracked plies, the crack density estimation method, the crack opening displacement
-
Trends of Impact Ice Adhesion on Various Surfaces AIAA J. (IF 2.108) Pub Date : 2021-03-04 Edem Tetteh; Eric Loth; Jessica Cummings; Jim Loebig
AIAA Journal, Ahead of Print.
-
Improved Prediction of Flow Around Airfoil Accreted with Horn or Ridge Ice AIAA J. (IF 2.108) Pub Date : 2021-03-04 Maochao Xiao; Yufei Zhang
AIAA Journal, Ahead of Print.
-
Experimental Characterization of Supersonic Single- and Dual-Impinging Jets AIAA J. (IF 2.108) Pub Date : 2021-03-04 Vikas N. Bhargav; MyungJun Song; Prabu Sellappan; Farrukh S. Alvi; Rajan Kumar
AIAA Journal, Ahead of Print.
-
Combined machine learning–wave propagation approach for monitoring timber mechanical properties under UV aging Struct. Health Monit. (IF 4.87) Pub Date : 2021-03-05 Vahid Nasir; Hamidreza Fathi; Siavash Kazemirad
This study proposes a combined machine learning–wave propagation approach for nondestructive prediction of the modulus of elasticity (MOE) and rupture (MOR) of timber subjected to ultraviolet (UV) radiation. Fir, poplar, alder, and oak wood specimens were subjected to artificial UV aging and assessed using the Lamb wave propagation. Different features including the wave characteristics and the viscoelastic
-
Experimental study on temperature difference between the interior and surface of Li[Ni1/3Co1/3Mn1/3]O2 prismatic lithium-ion batteries at natural convection and adiabatic condition Appl. Therm. Eng. (IF 4.725) Pub Date : 2021-02-20 Xiaolong Yang; Xiaolin Gao; Futao Zhang; Wei Luo; Yongkang Duan
The internal temperature of the battery is important for the design of battery thermal management and battery safety; however, it is difficult to be tested and seldom studied. A method of embedding thermocouples inside a prismatic Li[Ni1/3Co1/3Mn1/3]O2 (NCM) lithium-ion battery was developed to study the temperature inconsistency between the battery interior and the surface. Six thermocouples were
-
Hierarchical classification method of electricity consumption industries through TNPE and Bayes Meas. Control (IF 1.492) Pub Date : 2021-03-04 Zi-Wen Gu; Peng Li; Xun Lang; Xin Shen; Min Cao; Xiao-Hua Yang
As the multi-daily electricity consumption behaviors have the strong characteristics of dynamicity, nonlinearity and locality caused by temporal manifold structure, the existing methods are difficult to fine-grained and accurately classify it. To solve this problem, this paper proposes a hierarchical classification method based on the temporal extension of the neighborhood preserving embedding algorithm
-
Metal-based additive manufacturing condition monitoring methods: From measurement to control Isa Trans. (IF 4.305) Pub Date : 2021-03-05 Xin Lin; Kunpeng Zhu; Jerry Ying Hsi Fuh; Xianyin Duan
Compared with other additive manufacturing processes, the metal-based additive manufacturing (MAM) can build higher precision and higher density parts, and have unique advantages in the applications to automotive, medical, and aerospace industries. However, the quality defects of builds, such as dimensional accuracy, layer morphology, mechanical and metallurgical defects, have been hindering the wide
-
A New Study on the Gap Effect of an Airfoil with Active Flap Control Based on the Overset Grid Method Int. J. Aeronaut. Space Sci. (IF 0.509) Pub Date : 2021-03-05 Zhiyuan Hu; Guohua Xu; Yongjie Shi
Rotors with active flap control have considerable potential in reducing vibration and noise and improving aerodynamic performance. However, due to the movement of the flap, there are unavoidable gaps between the components that will lead to significant changes in the aerodynamic characteristics. Moreover, considering the difficulties in motion modeling and the accuracy of the simulation of the flow
-
Experimental Investigation of Wing Rock Phenomenon of a Fighter Aircraft with Conical Forebody Int. J. Aeronaut. Space Sci. (IF 0.509) Pub Date : 2021-03-05 Hyoung-Seog Chung; Donghyurn Cho; Jongbum Kim; Young Il Jang
To achieve supermaneuverability, the flight envelope for modern fighter aircraft should be extended beyond 40 \(\sim \)60° angles of attack region, where unstable and undesirable flight characteristics such as wing rock may occur. This paper investigates the wing rock phenomenon of a fighter configuration having conventional conical forebody through free-to-roll (FTR) wind tunnel tests. The time history
-
Development of a Vision-Based Recognition and Position Measurement System for Cooperative Missions of Multiple Heterogeneous Unmanned Vehicles Int. J. Aeronaut. Space Sci. (IF 0.509) Pub Date : 2021-03-05 Sukkeun Kim; Jihoon Park; Dongin Han; Eunsoo Kim; Daewoo Lee
Research on cooperation missions of multiple unmanned vehicles (UVs) is growing to overcome the limitations of conventional missions and to increase the variety of missions. In this study, a vision-based recognition and position measurement system was developed to cooperate with an unmanned aerial vehicle (UAV) in case an unmanned ground vehicle (UGV) is unable to drive due to terrain obstacles. Phase
-
Input–output stability and stabilisation conditions for discrete-time delayed fuzzy systems Int. J. Syst. Sci. (IF 2.149) Pub Date : 2021-03-05 Hicham El Aiss; Redouane Chaibi; Ahmed El Hajjaji; Abdelaziz Hmamed
The problem of input–output stability analysis and stabilisation of discrete Takagi–Sugeno (T–S) fuzzy systems with a time-varying delay via an input–output (I–O) approach is investigated in this paper. Using a three-term approximation-based model, a forward subsystem with three constant delays and a feedback subsystem are presented. Two separate input–output stability criteria have been formulated
-
Robust non-fragile memory feedback control for multi-weighted complex dynamical networks with randomly occurring gain fluctuations Int. J. Syst. Sci. (IF 2.149) Pub Date : 2021-03-05 R. Sakthivel; R. Sakthivel; P. Selvaraj; Faris Alzahrani; S. Marshal Anthoni
This paper deals with the robust observer-based synchronisation problem for a class of complex dynamic networks subject to multi-weights, time-varying coupling delay and external disturbance. Specifically, the gain fluctuation appears in the proposed controller and is represented in terms of a random variable obeying the Bernoulli distribution. The main objective of this paper is to design a non-fragile
-
Elevation Angle Estimation in 2D Acoustic Images Using Pseudo Front View IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-12 Yusheng Wang; Yonghoon Ji; Dingyu Liu; Hiroshi Tsuchiya; Atsushi Yamashita; Hajime Asama
A novel method to estimate the missing dimension in 2D acoustic images for 3D reconstruction is proposed in this paper. Acoustic cameras can acquire high resolution 2D images in underwater environment insusceptible to water turbidity and light condition. However, the formulation of acoustic images leads to the missing dimension problem. Estimating the unknown elevation angle dimension is a difficult
-
Stable Learning-Based Tracking Control of Underactuated Balance Robots IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-02 Feng Han; Jingang Yi
We present a Gaussian process (GP)-based tracking control of underactuated balance robots in which an actuated subsystem is required to follow a desired trajectory, while an unactuated, unstable subsystem needs to be kept balanced. The GP models are used to capture the coupling effects between the actuated/unactuated subsystems through a constructed balance equilibrium manifold (BEM). Optimization-based
-
Tra2Tra: Trajectory-to-Trajectory Prediction With a Global Social Spatial-Temporal Attentive Neural Network IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-04 Yi Xu; Dongchun Ren; Mingxia Li; Yuehai Chen; Mingyu Fan; Huaxia Xia
Accurate trajectory prediction plays a key role in robot navigation. It is beneficial for planning a collision-free and appropriate path for the autonomous robots, especially in crowded scenes. However, it is a particularly challenging task because there are complex and subtle interactions among pedestrians. There have been many studies focusing on how to model this spatial interactions but most of
-
Feasibility-Driven Step Timing Adaptation for Robust MPC-Based Gait Generation in Humanoids IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-16 Filippo M. Smaldone; Nicola Scianca; Leonardo Lanari; Giuseppe Oriolo
The feasibility region of a Model Predictive Control (MPC) algorithm is the subset of the state space in which the constrained optimization problem to be solved is feasible. In our recent Intrinsically Stable MPC (IS-MPC) method for humanoid gait generation, feasibility means being able to satisfy the dynamic balance condition, the kinematic constraints on footsteps as well as an explicit stability
-
A Variable Curvature Model for Multi-Backbone Continuum Robots to Account for Inter-Segment Coupling and External Disturbance IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-11 Yuyang Chen; Baibo Wu; Jiabin Jin; Kai Xu
Multi-backbone continuum robots demonstrated potentials for dexterous manipulation with proper payload capability in minimally invasive surgeries. Most prior works assume constant curvature shapes of the continuum segments in the modeling and control of the multi-backbone continuum robots. The actuation coupling effects between adjacent continuum segments and the segments’ variable curvature shapes
-
A Class of Optimal Switching Mixed Data Injection Attack in Cyber-Physical Systems IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-02 Sheng Gao; Hao Zhang; Zhuping Wang; Chao Huang
This letter considers a class of switching mixed data injection attacks using input derivatives in cyber-physical systems with linear quadratic(LQ) cost from the perspective of the attacker. The attacker injects data mixed with false data and its derivative into a healthy system, which destroys the performance of the original system. For this situations, the optimal mixed data injection attack strategy
-
Bidirectional Trajectory Computation for Odometer-Aided Visual-Inertial SLAM IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-16 Jinxu Liu; Wei Gao; Zhanyi Hu
Odometer-aided visual-inertial SLAM systems typically have a good performance for navigation of wheeled platforms, while they usually suffer from degenerate cases before the first turning. In this paper, firstly we perform an observability analysis w.r.t. the extrinsic parameters before the first turning, which is a complement of the existing results of observability analyses. Secondly, inspired by
-
Range-Focused Fusion of Camera-IMU-UWB for Accurate and Drift-Reduced Localization IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-08 Thien Hoang Nguyen; Thien-Minh Nguyen; Lihua Xie
In this work, we present a tightly-coupled fusion scheme of a monocular camera, a 6-DoF IMU, and a single unknown Ultra-wideband (UWB) anchor to achieve accurate and drift-reduced localization. Specifically, this letter focuses on incorporating the UWB sensor into an existing state-of-the-art visual-inertial system. Previous works toward this goal use a single nearest UWB range data to update robot
-
A Scalable Approach to Predict Multi-Agent Motion for Human-Robot Collaboration IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-11 Mohammad Samin Yasar; Tariq Iqbal
Human motion prediction is considered a key component for enabling fluent human-robot collaboration. The ability to anticipate the motion and subsequent intent of the partner(s) remains a challenging task due to the complex and interpersonal nature of human behavior. In this work, we propose a novel sequence learning approach that learns a robust representation over the observed human motion and can
-
Energy Saving of Schooling Robotic Fish in Three-Dimensional Formations IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-16 Liang Li; Xingwen Zheng; Rui Mao; Guanming Xie
It has long been proposed that animals flying in the air and swimming in the water could extract energy from neighbour-induced flows. A large number of mechanisms have been proposed to explain whether, and if so how, animals can save energy by moving in two-dimensional (2D) formations—individuals swim in the horizontal plane. Seldom studies explore the mechanisms in three-dimensional (3D) formations—individuals
-
Designing Fast and Smooth Trajectories in Collaborative Workstations IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-11 Rafael A. Rojas; Renato Vidoni
Collaborative robotics is one of the main drivers of the fourth industrial revolution. However, its introduction implies new challenges related to the mechanical risk they may represent and the psychological stress that they can induce on people. In order to reduce these risks, countermeasures like velocity limits and smooth trajectories have been implemented. Nevertheless, from these solutions excessively
-
Intensity-SLAM: Intensity Assisted Localization and Mapping for Large Scale Environment IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-16 Han Wang; Chen Wang; Lihua Xie
Simultaneous Localization And Mapping (SLAM) is a task to estimate the robot location and to reconstruct the environment based on observation from sensors such as LIght Detection And Ranging (LiDAR) and camera. It is widely used in robotic applications such as autonomous driving and drone delivery. Traditional LiDAR-based SLAM algorithms mainly leverage the geometric features from the scene context
-
Fast Localization and Segmentation of Tissue Abnormalities by Autonomous Robotic Palpation IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-11 Youcan Yan; Jia Pan
Robot-assisted minimally invasive surgery (RMIS) has become increasingly popular in the resection of cancers. However, the lack of tactile feedback in clinical RMIS limits the surgeon's haptic understanding of tissue mechanics, making it hard to detect tissue abnormalities (e.g., tumor) efficiently. In this letter, we propose an approach that can simultaneously localize and segment the hard inclusions
-
Ascidian-Inspired Soft Robots That Can Crawl, Tumble, and Pick-and-Place Objects IEEE Robot. Automation Lett. (IF 3.608) Pub Date : 2021-02-16 Shirong Zheng; Tongil Park; Manh Cuong Hoang; Gwangjun Go; Chang-sei Kim; Jong-Oh Park; Eunpyo Choi; Ayoung Hong
A cylindrical shaped marine invertebrate ascidian has muscle fibers surrounding its body, which induce the contraction motion when the animal senses the external stimuli. As inspired by its cylindrical shape and the contraction motion of the ascidian, we introduce a soft robot that resembles this water animal. In this letter, we first discuss the design of the robot that can be magnetically actuated
-
Table of Contents IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-03-02
Presents the table of contents for this issue of the publication.
-
IEEE Microwave Theory and Techniques Society IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-03-02
Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.
-
Editorial IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-03-02 Imran Mehdi
Presents the editorial for this issue of the publication.
-
Effects of Diffuse and Specular Reflections on Detecting Embedded Defects of Foams With a Bifocal Active Imaging System at 0.22 THz IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-01-06 Hui Wang; De-Liang Zhou; Run-Feng Su; Xue-Cou Tu; Xiao-Qing Jia; Lin Kang; Biao-Bing Jin; Wei-Wei Xu; Hua-Bing Wang; Jian Chen; Pei-Heng Wu
We show the diffuse and specular reflection images of defective foams placed on iron plates, which are obtained by a bifocal active imaging system at 0.22 THz. Foam materials studied are extruded polystyrene boards and acetate copolymer boards with artificially embedded defects. In the field of view of approximately 50 × 90 cm 2 , the incident angle of the emitting and receiving cochannel system affects
-
The High-Order Coalesced TM11-Like Mode Operation for 220 GHz Sheet Beam Traveling-Wave Tube IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-01-25 Yixin Wan; Jianxun Wang; Zeng Liu; Jiahao Gao; Guoxiang Shu; Guo Liu; Zewei Wu; Yong Luo
Sheet beam vacuum electron tubes are an attractive solution for high-power sources or amplifiers at millimeter-wave and terahertz range. In this article, a high-order coalesced TM 11 -like mode operation for 220 GHz sheet beam traveling-wave tube is proposed. The feasibility of coalesced TM 11 -like mode operation is investigated. The utilization of high-order mode expands the RF circuit power capacity
-
Information for Authors IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-03-02
These instructions give guidelines for preparing papers for this publication. Presents information for authors publishing in this journal.
-
Random laser speckle pattern projection for non-contact vibration measurements using a single high-speed camera Mech. Syst. Signal Process. (IF 6.471) Pub Date : 2021-03-04 Pablo Etchepareborda; Marie-Hélène Moulet; Manuel Melon
-
TechRxiv: Share Your Preprint Research with the World! IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-03-02
Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.
-
Introducing IEEE Collabratec IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-03-02
Advertisement.
-
Expand Your Network, Get Rewarded IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-03-02
Advertisement.
-
IEEE Transactions on Terahertz Science and Technology IEEE Trans. Terahertz Sci. Tech. (IF 2.593) Pub Date : 2021-03-02
Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.
-
A novel acoustic feedback compensation filter for nonlinear active noise control system Mech. Syst. Signal Process. (IF 6.471) Pub Date : 2021-03-05 Lei Luo; Wenzhao Zhu; Antai Xie
The acoustic feedback is widely seen in the active noise control (ANC) system for short acoustic duct such as the intake system of an automobile engine, which severely destabilizes the stability of the original ANC system. The conventional acoustic feedback compensation methods based on IIR filter can only be applied to the linear acoustic path and is not suitable for a nonlinear ANC (NANC) system
-
Prediction of vehicle driving conditions with incorporation of stochastic forecasting and machine learning and a case study in energy management of plug-in hybrid electric vehicles Mech. Syst. Signal Process. (IF 6.471) Pub Date : 2021-03-05 Yonggang Liu; Jie Li; Jun Gao; Zhenzhen Lei; Yuanjian Zhang; Zheng Chen
Prediction of short-term future driving conditions can contribute to energy management of plug-in hybrid electric vehicles and subsequent improvement of their fuel economy. In this study, a fused short-term forecasting model for driving conditions is established by incorporating the stochastic forecasting and machine learning. The Markov chain is applied to calculate the transition probability of historical
-
Numerical and experimental-based framework for vibro-acoustic coupling investigation on a vehicle door in the slamming event Mech. Syst. Signal Process. (IF 6.471) Pub Date : 2021-03-05 Zhe Liu; Yunkai Gao; James Yang
The sound quality produced by the door slamming event is one of the significant subjective parameters to evaluate the inherent quality of the vehicle. The vehicle door is mainly composed of fixed door panels and moving glass channels and the sound quality depends on these structural components. This paper proposes a numerical and experimental-based framework to evaluate the vibro-acoustic coupling
-
Photoacoustic Substitution Method for Calibrating Subterahertz Attenuation in Free Space IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-19 Hitoshi Iida; Moto Kinoshita
A terahertz (THz) attenuation calibration system is developed using a photoacoustic (PA) detector for free-space beams. Based on the principle of the PA detector, the system measures the THz attenuation by substituting radio frequency (RF) attenuation with audio frequency (AF) attenuation. The AF attenuation at 1 kHz is directly calibrated using an inductive voltage divider (IVD) as the reference standard
-
Feature Extraction for Data-Driven Remaining Useful Life Prediction of Rolling Bearings IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-15 Huimin Zhao; Haodong Liu; Yang Jin; Xiangjun Dang; Wu Deng
A variety of data-driven methods have been proposed to predict remaining useful life (RUL) of key component for rolling bearings. The accuracy of data-driven RUL prediction model largely depends on the extraction method of performance degradation features. The individual heterogeneity and working condition difference of rolling bearings lead to the different performance degradation curves of rolling
-
An Autonomous Electrical Signature Analysis-Based Method for Faults Monitoring in Industrial Motors IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-15 P. Balakrishna; Umar Khan
Rotating machines are widely used in industries, manufacturing, and oil and gas plants as a critical component for process availability. The inadvertent failure of these rotating machines causes significant process downtime and incurs higher repair costs and loss of revenue. These failures can belong to electrical, thermal, or mechanical fault categories. Early detection of all these faults is very
-
Improving EIT-Based Visualizations of Two-Phase Flows Using an Eigenvalue Correlation Method IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-03 Chunhui Dang; Mathieu Darnajou; Cédric Bellis; Guillaume Ricciardi; Saba Mylvaganam; Salah Bourennane
Gas–liquid two-phase flows are encountered in various industrial processes involving high temperatures and high pressures, which necessitates nonintrusive sensing for real-time imaging of phase distribution and flow parameters. In this context, this article presents an electrical impedance tomography (EIT)-based eigenvalue correlation method that allows extracting two-phase flow features, namely, the
-
Motion-Robust Multimodal Heart Rate Estimation Using BCG Fused Remote-PPG With Deep Facial ROI Tracker and Pose Constrained Kalman Filter IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-19 Yiming Liu; Binjie Qin; Rong Li; Xintong Li; Anqi Huang; Haifeng Liu; Yisong Lv; Min Liu
The heart rate (HR) signal is so weak in remote photoplethysmography (rPPG) and ballistocardiogram (BCG) that HR estimation is very sensitive to face and body motion disturbance caused by spontaneous head and body movements as well as facial expressions of subjects in conversation. This article proposed a novel multimodal quasi-contactless HR sensor to ensure the robustness and accuracy of HR estimation
-
Modeling and Optimization of Rotary Laser Surface for Large-Scale Optoelectronic Measurement System IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-05 Jiarui Lin; Jialei Sun; Linghui Yang; Rao Zhang; Yongjie Ren
A rotary laser optoelectronic measurement system is used as part of a multistation network for large-scale metrology. The line-structured laser surface of the transmitter is regarded as an ideal plane for the intersecting measurement. This article presents how the rotary laser surface model can be optimized for large-scale optoelectronic measurement systems. Initially, the deformation of the laser
-
A Simplified Lift-Off Correction for Three Components of the Magnetic Flux Leakage Signal for Defect Detection IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-16 Lisha Peng; Songling Huang; Shen Wang; Wei Zhao
Magnetic flux leakage (MFL) testing is widely used to detect and estimate defect in ferromagnetic materials. The lift-off of sensors caused the weakening of the detected signal inevitably. Therefore, it is necessary to correct lift-off for the detected MFL signal. In this article, we analyze the approximate negative exponential relationship between the three components of MFL signal of the defect and
-
Characterization of the Charge Collection Efficiency in Silicon 3-D-Detectors for Microdosimetry IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-01-28 Diana Bachiller-Perea; Javier García López; María del Carmen Jiménez-Ramos; Faustino Gómez; Celeste Fleta; David Quirion; Adrián García-Osuna; Consuelo Guardiola
New silicon 3-D-microdetectors have been developed to perform microdosimetry measurements for applications in hadron therapy. In this work, the charge collection efficiency (CCE) of an improved second generation of microdetectors having two different thicknesses (10 and 20 $\mu \text{m}$ ) and a diameter of 25 $\mu \text{m}$ has been studied by means of the ion beam induced charge (IBIC) technique
-
Optical Design and Verification of Multipass Cell With Two Spherical Mirrors Using Space Equation Method IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-10 Hongda Chen; Chen Chen; Yanzhang Wang; Heng Piao; Peng Wang
Multipass cell (MPC), with a long effective optical path length (OPL), is an effective method to improve measurement sensitivity in laser absorption spectroscopy for trace gas sensing. We present a space equation (SE) method to design MPC, which can solve inaccuracy caused by using paraxial-matrix (PM) method. The location and dimension of light spot pattern can be calculated accurately and intuitively
-
A High-Performance, Reconfigurable, Fully Integrated Time-Domain Reflectometry Architecture Using Digital I/Os IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-19 Zhenyu Xu; Thomas Mauldin; Zheyi Yao; Gerald Hefferman; Tao Wei
Time-domain reflectometry (TDR) is an established means of measuring impedance inhomogeneity of a variety of waveguides, providing critical data necessary to characterize and optimize the performance of high-bandwidth computational and communication systems. However, TDR systems with both the high spatial resolution (sub-cm) and voltage resolution (sub- $\mu \text{V}$ ) required to evaluate high-performance
-
The Impact of Height on Indoor Positioning With Magnetic Fields IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-12 David Hanley; Augusto S. Dantas de Oliveira; Xiangyuan Zhang; Dae Hyun Kim; Yusheng Wei; Timothy Bretl
Steel studs, heating, ventilation, and air conditioning (HVAC) systems, rebar, and many other building components produce spatially varying magnetic fields. Magnetometers can measure these fields and can be used in combination with inertial sensors for indoor positioning of robots and handheld devices, such as smartphones. Current methods of localization and mapping with magnetometers are often based
-
A Gyro-Aided Strapdown Triaxial Magnetometer Calibration Method Robust to Gyro Bias IEEE Trans. Instrum. Meas. (IF 3.658) Pub Date : 2021-02-19 Jihao Liu; Xihai Li; Ying Zhang; Aimin Du; Xiaoniu Zeng; Yong Yang
Geomagnetic vector field is always measured by a strapdown triaxial magnetometer on a vehicle. The magnetometer measurements are polluted by the magnetometer inherent errors, misalignment error, and vehicle-generated magnetic inferences. With the aid of absolute attitude information from the gyro, the calibration accuracy has been proved to be greatly improved, especially for vector measurements. However
-
Impact of aromatic species selection and micro and bulk properties of alternative fuels on atomisation Aeronaut. J. (IF 0.663) Pub Date : 2021-03-05 C.J. Wijesinghe; B. Khandelwal
The importance of fuel injection methods and their atomisation characteristics has been well described in literature. Also, there are a large number of studies in literature detailing the impact of bulk properties of conventional fuels on atomisation and spray characteristics. However, there is a lack of knowledge on how different alternative fuels, and specifically aromatic species, impact spray and
-
Design and evaluation of the target spray platform Int. J. Adv. Robot. Syst. (IF 1.482) Pub Date : 2021-03-05 Mingchuan Zhou; Huanyu Jiang; Zhenshan Bing; Hang Su; Alois Knoll
The target-oriented spraying is an effective way to minimize chemical input in agricultural production and it is important to actualizing sustainable agriculture. This article focused on the design and optimization of the target spray platform. The spray platform consists of three parts: the vision system, the spray system, and the moving platform. All components were effectively connected and preliminarily
-
Controlled Spacecraft Trajectories in the Context of a Mission to a Binary Asteroid System J. Astronaut. Sci. (IF 2.775) Pub Date : 2021-03-04 I. Jean; A. K. Misra; A. Ng
The NASA DART and ESA Hera missions to binary asteroid 65803 Didymos have generated a lot of interest in the study of spacecraft dynamics in the vicinity of binary asteroids. The combination of the effect of the irregular shape and the rotation of the primary bodies makes them not only non-linear, but also non-autonomous systems. This study uses a technique to design reference trajectories in the context
-
Influence of Low Dose Naltrexone on Raman Assisted Bone Quality, Skeletal Advanced Glycation End-products and Nano-mechanical Properties in Type 2 Diabetic Mice Bone Mater. Sci. Eng. C (IF 5.88) Pub Date : 2021-03-05 Pankaj Shitole; Abhinav Choubey; Prosenjit Mondal; Rajesh Ghosh
Type 2 diabetes mellitus (T2DM) commonly affects the bone mineral phase and advanced glycation end-products (AGEs) which eventually led to changes in bone material properties on the nano and macro-scale. Several anti-diabetic compounds are widely used to control high blood sugar or glucose caused by T2DM. Low Dose Naltrexone (LDN), an opiate receptor antagonist, and a known TLR4 antagonist, treatment
Contents have been reproduced by permission of the publishers.