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IEEE transactions on instrumentation and measureme...IEEE transactions on instrumentation and measurement 20건

  1. [해외논문]   Hybrid Time-Variant Frequency Response Function Estimates Using Multiple Sets of Basis Functions   SCI SCIE

    Song, Tao (School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China) , Lin, Defu
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 263 - 279 , 2017 , 0018-9456 ,

    초록

    A new method for estimating the nonparametric time-variant frequency response function (TV-FRF) and its variance of a hybrid time-varying system is proposed. By parameterizing the hybrid time variation using Legendre polynomials and Haar multiresolution wavelets, the TV-FRF identification problem is reduced to a time-invariant FRF estimation problem. The stepwise regression method and Akaike information criterion are applied to select the significant basis functions without manual intervention. This method can achieve high estimation accuracy and small uncertainty without requiring prior knowledge of the time variation of system dynamics. Simulations and an experiment are included to illustrate the method.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  2. [해외논문]   Particle Learning Framework for Estimating the Remaining Useful Life of Lithium-Ion Batteries   SCI SCIE

    Liu, Zhenbao , Sun, Gaoyuan , Bu, Shuhui , Han, Junwei , Tang, Xiaojun , Pecht, Michael
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 280 - 293 , 2017 , 0018-9456 ,

    초록

    As an important part of prognostics and health management, accurate remaining useful life (RUL) prediction for lithium (Li)-ion batteries can provide helpful reference for when to maintain the batteries in advance. This paper presents a novel method to predict the RUL of Li-ion batteries. This method is based on the framework of improved particle learning (PL). The PL framework can prevent particle degeneracy by resampling state particles first with considering the current measurement information and then propagating them. Meanwhile, PL is improved by adjusting the number of particles at each iteration adaptively to reduce the running time of the algorithm, which makes it suitable for online application. Furthermore, the kernel smoothing algorithm is fused into PL to keep the variance of parameter particles invariant during recursive propagation with the battery prediction model. This entire method is referred to as PLKS in this paper. The model can then be updated by the proposed method when new measurements are obtained. Future capacities are iteratively predicted with the updated prediction model until the predefined threshold value is triggered. The RUL is calculated according to these predicted capacities and the predefined threshold value. A series of case studies that demonstrate the proposed method is presented in the experiment.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   A Finger Vein Image-Based Personal Identification System With Self-Adaptive Illuminance Control   SCI SCIE

    Chen, Liukui , Wang, Jing , Yang, Shiyu , He, Haibo
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 294 - 304 , 2017 , 0018-9456 ,

    초록

    As a biometric trait, finger vein pattern-based technology is highly effective for personal identification with high security. In this paper, we presented the design of a personal identification system based on near infrared (NIR) finger vein image. In this paper, we introduced an observation model of finger vein imaging, upon which a self-adaptive illuminance control algorithm is proposed and integrated into image acquisition hardware. According to the distribution of pixel intensity of the acquired image, the proposed algorithm could automatically adjust the illuminance distribution of lighting: increase the illuminance of lighting, under which the thicker part of finger body is presented and decrease the illuminance of lighting, under which the thinner part of finger body is presented. With this adaptation, the whole finger body could be illuminated appropriately according to its thickness distribution, and the overexposure and underexposure are avoided effectively. An NIR finger vein image database containing 2040 images is established and published in this paper. In the image preprocessing stage, Gabor filters are used to enhance captured raw finger vein images. In our experiment, the identification performance of our system is evaluated using the recognition rate and the margin distribution. A sparse representation-based algorithm is used to calculate the recognition rate and provide data for margin analysis. The results prove the effectiveness of the proposed illuminance control algorithm and the whole system in finger vein-based personal identification.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  4. [해외논문]   Fast Thermal Characterization of Thermoelectric Modules Using Infrared Camera   SCI SCIE

    Attivissimo, Filippo , Di Nisio, Attilio , Carducci, Carlo Guarnieri Calo , Spadavecchia, Maurizio
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 305 - 314 , 2017 , 0018-9456 ,

    초록

    Thermoelectric modules are receiving more and more attention due to the increasing interest in the energy harvesting sector. The selection of the proper module for a particular application can be done comparing the values of the figure of merit, which depend on electrical parameters such as internal electrical resistance and Seebeck voltage, and the equivalent thermal resistance. Despite its importance, thermal resistance is more difficult to estimate than other parameters, as a well-engineered experimental setup is usually needed. In this paper, a new, fast, and noninvasive method based on thermal imaging techniques, to estimate the thermal resistance of thermoelectric modules, is presented. The comparison between this method and a direct measurement method based on thermocouple probes shows that very similar performance, with a small relative error, is achieved quicker, also avoiding to implement a complex measurement setup involving many temperature probes. Moreover, due to the contactless nature of the procedure, the proposed experimental setup can be easily tuned for modules of different sizes without the need to modify any mechanical part.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  5. [해외논문]   Measurement of Soot Temperature and Volume Fraction of Axisymmetric Ethylene Laminar Flames Using Hyperspectral Tomography   SCI SCIE

    Liu, Huawei , Zheng, Shu , Zhou, Huaichun
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 315 - 324 , 2017 , 0018-9456 ,

    초록

    Three kinds of atmospheres, namely, air, oxygen-enriched air, and oxygen/carbon dioxide atmospheres, and a total of ten axisymmetric coflow ethylene laminar flames are experimentally studied using a hyperspectral imaging device. 2-D distributions of the local emission source term in the visible and near-infrared ranges are reconstructed using the least-squares method. Then the distributions of temperature and absorption coefficient are calculated using the Newton-type iterative method, while the wavelength dependence of the absorption coefficient is fitted by polynomials. For the nonoptically thin flame, an iterative algorithm is adopted by substituting the absorption coefficients back into the reconstruction. The experimental results show that there exists a local temperature peak near the flame edge and the flame root. Additionally, for an oxygen-enriched atmosphere, there also exists another local temperature peak in upper center part of the flame in an air/oxygen atmosphere or in the upper edge part in an oxygen/carbon dioxide atmosphere. The results also reveal that the reduction in the flow of ethylene will result in the decrease in the highest soot volume fraction, and a higher oxygen content will generate a higher temperature peak and a lower soot volume fraction peak in an oxygen-enriched air atmosphere, but a higher soot volume fraction peak in an oxygen-enriched oxygen/carbon dioxide atmosphere. In addition, in an air atmosphere or an atmosphere with a large quantity of carbon dioxide, there will be another local peak of the soot volume fraction in the upper center part of the flame, which may be aggravated by the reduction in the amount of ethylene.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  6. [해외논문]   Research and Application of Ice Thickness and Snow Depth Automatic Monitoring System   SCI SCIE

    Du, Chao (College of Information Science and Engineering, Northeastern University, Shenyang, China ) , Wang, Qi (College of Information Science and Engineering, Northeastern University, Shenyang, China ) , Liu, Xu (College of Information Science and Engineering, Northeastern University, Shenyang, China ) , Zhao, Yong (College of Information Science and Engineering, Northeastern University, Shenyang, China ) , Deng, Xiao (College of Physics and Optoelectronic, Taiyuan University of Technology, Taiyuan, China ) , Cui, Liqin (College of Physics and Optoelectronic, Taiyuan University of Technology, Taiyuan, China)
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 325 - 331 , 2017 , 0018-9456 ,

    초록

    The ice thickness and snow depth are the basic parameters of conventional weather observation, environmental monitoring, and hydrological services in winter. Moreover, they are also classified as the key observation contents of the polar scientific expedition for analyzing global climate changes. In this paper, an ice thickness measuring method based on temperature gradient differences in air, ice, and water and a snow depth detection method based on differences in optical intensity attenuation induced by infrared light going through air or snow are proposed. Based on these methods, a monitoring system was fabricated to monitor the ice and snow in the Heilongjiang River of China, where the ambient temperature is below −30 °C and the river ice is covered with snow in winter. The results indicate that the system achieved a measurement precision of 0.01 m for both the ice thickness (in the range of 0–2 m) and snow depth detection (in the depth range of 0–0.5 m). The proposed system has the potential to be used for real-time monitoring of the growth, melting, and changing processes of river ice and snow.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

    이미지

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  7. [해외논문]   Adaptive Cancellation of Parasitic Vibrations Affecting a Self-Mixing Interferometric Laser Sensor   SCI SCIE

    Khan, Zohaib Ahmad (Riphah International University, Islamabad, Pakistan ) , Zabit, Usman (LAAS-CNRS, Universite de Toulouse, CNRS, INPT, Toulouse, France ) , Bernal, Olivier D. (University of Engineering and Technology Taxila, Pakistan ) , Ullah, Muhammad Obaid (LAAS-CNRS, Universite de Toulouse, CNRS, INPT, Toulouse, France) , Bosch, Thierry
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 332 - 339 , 2017 , 0018-9456 ,

    초록

    In this paper, an adaptive method of cancellation of parasitic vibrations is presented for a self-mixing (SM) interferometric laser vibration sensor that has been coupled with a solid-state accelerometer (SSA). Previously, this was achieved using a precalibration of phase and gain mismatches over the complete bandwidth of the instrument. Such a precalibration is not only tedious to execute but also hinders a mass production of the instrument as every SSA–SM sensor couple requires customized calibration. On the other hand, the proposed method does not require any precalibration as it uses an adaptive filter that self-tunes to match any unknown phase and gain differences between the SSA and the SM sensor. Two different adaptive algorithms, namely, recursive least squares (RLS) and least mean squares (LMS) algorithms, are tested and a comparison is established on the basis of parameter dependence, convergence time, computational cost, and rms error. The proposed algorithms have provided improved results (mean errors of 19.1 nm and 20.2 nm for LMS and RLS, respectively) compared with the precalibration-based results (mean error of 24.7 nm) for a laser wavelength of 785 nm. The simulated and experimental results thus demonstrate the utility of such an approach for embedded vibration sensing corrupted by extraneous parasitic motion.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  8. [해외논문]   A Distributed FMCW Radar System Based on Fiber-Optic Links for Small Drone Detection   SCI SCIE

    Shin, Dong-Hun , Jung, Dae-Hwan , Kim, Dong-Chan , Ham, Jong-Wook , Park, Seong-Ook
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 340 - 347 , 2017 , 0018-9456 ,

    초록

    This paper discusses a distributed frequency modulation continuous wave radar system. This K-band radar system has high sensitivity, linearity, and flatness to detect low-radar cross section targets and measure their range and velocity. To reduce the leakage between a transmitter and a receiver, the system uses not RF cables but fiber-optic links that have low distortion characteristics and low propagation loss. The transmitter and the receiver are each mounted on a designed fixture to reduce the ground reflections. In addition, they are located on different platforms to reduce the leakage signal flowing directly from the transmitter to the receiver. Measurements in terms of the range and the velocity of a small drone have been carried out to evaluate the proposed distributed radar system. The results show that we can clearly detect the small drone within a 500 m range, which demonstrates the high sensitivity of the system and high isolation between the transmitter and the receiver.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  9. [해외논문]   Inductive Integrated Biosensor With Extended Operative Range for Detection of Magnetic Beads for Magnetic Immunoassay   SCI SCIE

    Beninato, Angela (Dipartimento di Ingegneria Elettrica Elettronica e Informatica, Università) , Sinatra, Valentina (degli Studi di Catania, Catania, Italy ) , Tosto, Giuseppe (STMicroelectronics, Catania, Italy ) , Castagna, Maria Eloisa (STMicroelectronics, Catania, Italy ) , Petralia, Salvatore (STMicroelectronics, Catania, Italy ) , Conoci, Sabrina (Dipartimento di Ingegneria Elettrica Elettronica e Informatica, Università) , Baglio, Salvatore (degli Studi di Catania, Catania, Italy)
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 348 - 359 , 2017 , 0018-9456 ,

    초록

    Biosensors are prominent in several areas, such as medical diagnosis, food preparation, pharmaceutical industries, and clinical analysis; high performances are required in spite of attaining accuracy, sensitivity, low cost, easy handling, and portability, but the major parameter that is always representing a challenge for biosensors is specificity. High sensitivity and specificity can be obtained by combining appropriate transduction methods together with immunoassay techniques. In this paper, integrated inductive biosensors for the magnetic immunoassay process, which use magnetic beads as markers for biomolecules, are presented with potential applications to proteins and DNA measurements. The working principle and a dedicated fabrication technology, which also embeds thermal actuation and control, are described; in particular, an improved sensing architecture is proposed here, which allows one to expand the microsensor operative field toward very low bead concentrations. The sensor characterization results are presented together with the analytical model of the transduction principle; a detection limit of approximately 300 beads has been demonstrated. The microsensor is also capable of operating by measuring up to 450 000 beads with a good linearity. Therefore, the sensor architecture proposed here has been demonstrated for wide operating field with high resolution and good linearity; the results proposed confirm the suitability of the devices developed for magnetic immunoassay applications.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  10. [해외논문]   Matching Synchrosqueezing Wavelet Transform and Application to Aeroengine Vibration Monitoring   SCI SCIE

    Wang, Shibin , Chen, Xuefeng , Tong, Chaowei , Zhao, Zhibin
    IEEE transactions on instrumentation and measurement v.66 no.2 ,pp. 360 - 372 , 2017 , 0018-9456 ,

    초록

    This paper presents a new time–frequency (TF) analysis method called matching synchrosqueezing wavelet transform (MSWT) to signals with fast varying instantaneous frequency (IF). The original synchrosqueezing wavelet transform (SWT) can effectively improve the readability of TF representation (TFR) of signals with slowly varying IF. However, SWT still suffers from TF blurs for signals with fast varying IF. Moreover, the variable operating conditions of the aeroengine always make the vibration a signal with fast varying IF, especially when it comes to significant speed changes, which results in the obscure TFR for aeroengine vibration monitoring. In this paper, the MSWT introduces a chirp rate estimation into a comprehensive IF estimation to match the TF structure of the signals with fast varying IF and thus to achieve a highly concentrated TFR as the standard TF reassignment methods. Most importantly, the MSWT retains the reconstruction benefit like the SWT. The proposed MSWT is validated by both numerical simulation and applications in a bat echolocation signal analysis. Finally, a case study of a dual-rotor turbofan engine is given to illustrate the effectiveness of the proposed method for aeroengine vibration monitoring.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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