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学者姓名：钟舜聪
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Abstract ：
With the continuous development of computer technology, deep learning has been widely used in fault diagnosis and achieved remarkable results. However, in actual production, the problem of insufficient fault samples and the difference in data domains caused by different working conditions seriously limit the improvement of model diagnosis ability. In recent years, meta-learning has attracted widespread attention from scholars as one of the main methods of few-shot learning. It can quickly adapt to new tasks by training on a small number of samples. A fine-tuning prototypical network is proposed on meta-learning methods to address the challenges of fault diagnosis under few-shot and cross-domain. Firstly, the shuffle attention is used to enhance the feature extraction ability of the network and suppress irrelevant features. Then, the support set of the target domain is split into two parts: pseudo support set and pseudo query set, which are used to fine-tune the prototypical network and improve the model generalization. Finally, experiments are conducted on three rotating equipment datasets to verify the method’s effectiveness. © 2024 IOP Publishing Ltd.
Keyword ：
cross-domain cross-domain fault diagnosis fault diagnosis few-shot few-shot prototypical network prototypical network shuffle attention shuffle attention
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| GB/T 7714 | Zhong, J. , Gu, K. , Jiang, H. et al. A fine-tuning prototypical network for few-shot cross-domain fault diagnosis [J]. | Measurement Science and Technology , 2024 , 35 (11) . |
| MLA | Zhong, J. et al. "A fine-tuning prototypical network for few-shot cross-domain fault diagnosis" . | Measurement Science and Technology 35 . 11 (2024) . |
| APA | Zhong, J. , Gu, K. , Jiang, H. , Liang, W. , Zhong, S. . A fine-tuning prototypical network for few-shot cross-domain fault diagnosis . | Measurement Science and Technology , 2024 , 35 (11) . |
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The radial vibration signals of the rotor can provide abundant information about the health condition of the machine. In this paper, a simple vision-based measurement system is proposed to simultaneously measure two-dimensional displacements in radial directions for the rotating shaft, where the system consists of a constant density fringe pattern (CDFP), a line scan camera (LSC), and a lens. The CDFP should be installed around the surface of the rotating shaft to make the density of the fringe constant along the shaft axis, while the shaft axis is vertical to the optical axis of the LSC but not parallel to the line-array sensor of the LSC. Therefore, the density of the fringe imaged on the LSC is not constant because of the modulation of the circular surface of the shaft, and the distribution of the fringe density on the LSC is a U-shaped curve. Thus, the shaft centreline orbit can be tracked by the lowest point of the density distribution curve (DDC) of the fringe. Then, an efficient and accurate parameterized instantaneous frequency estimation method is employed to estimate the DDC of the fringe, because the variable density fringe can be regarded as an amplitude-modulated and frequency-modulated nonstationary signal whose instantaneous frequency function is equivalent to the DDC. Experimental results verify the feasibility and effectiveness of the proposed method by comparing it to the eddy current sensors.
Keyword ：
constant density fringe pattern constant density fringe pattern line scan camera line scan camera parameterized instantaneous frequency estimation method parameterized instantaneous frequency estimation method radial vibration measurement radial vibration measurement rotating shaft rotating shaft
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| GB/T 7714 | Huang, Yuexin , Liu, Dongming , Zhong, Jianfeng et al. Radial vibration measurement of rotating shaft using constant density fringe pattern and line scan camera [J]. | MEASUREMENT SCIENCE AND TECHNOLOGY , 2024 , 35 (8) . |
| MLA | Huang, Yuexin et al. "Radial vibration measurement of rotating shaft using constant density fringe pattern and line scan camera" . | MEASUREMENT SCIENCE AND TECHNOLOGY 35 . 8 (2024) . |
| APA | Huang, Yuexin , Liu, Dongming , Zhong, Jianfeng , Zhong, Shuncong . Radial vibration measurement of rotating shaft using constant density fringe pattern and line scan camera . | MEASUREMENT SCIENCE AND TECHNOLOGY , 2024 , 35 (8) . |
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The flatness of semiconductor substrates is an important parameter for evaluating the surface quality of semiconductor substrates. However, existing technology cannot simultaneously achieve high measurement efficiency, large-range thickness measurement, and nanometer-level measurement accuracy in the thickness measurement of semiconductor substrates. To solve the problems, we propose to apply the method that combines spectral-domain optical coherence tomography (SD-OCT) with the Hanning-windowed energy centrobaric method (HnWECM) to measure the thickness of semiconductor substrates. The method can be employed in the full-chip thickness measurement of a sapphire substrate, which has a millimeter measuring range, nanometer-level precision, and a sampling rate that can reach up to 80 kHz. In this contribution, we measured the full-chip thickness map of a sapphire substrate by using this method and analyzed the machining characteristics. The measurement results of a high-precision mechanical thickness gauge, which is widely used for thickness measurement in the wafer fabrication process, were compared with the proposed method. The difference between these two methods is 0.373%, which explains the accuracy of the applied method to some extent. The results of 10 sets of repeatability experiments on 250 measurement points show that the maximum relative standard deviation (RSD) at this point is 0.0061%, and the maximum fluctuation is 71.0 nm. The above experimental results prove that this method can achieve the high-precision thickness measurement of the sapphire substrate and is of great significance for improving the surface quality detection level of semiconductor substrates.
Keyword ：
HnWECM HnWECM SD-OCT SD-OCT semiconductor substrate semiconductor substrate spectral-domain interferometry spectral-domain interferometry thickness measurement thickness measurement
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| GB/T 7714 | Zhong, Shuncong , He, Renyu , Deng, Yaosen et al. High-Precision Semiconductor Substrate Thickness Gauge Based on Spectral-Domain Interferometry [J]. | PHOTONICS , 2024 , 11 (5) . |
| MLA | Zhong, Shuncong et al. "High-Precision Semiconductor Substrate Thickness Gauge Based on Spectral-Domain Interferometry" . | PHOTONICS 11 . 5 (2024) . |
| APA | Zhong, Shuncong , He, Renyu , Deng, Yaosen , Lin, Jiewen , Zhang, Qiukun . High-Precision Semiconductor Substrate Thickness Gauge Based on Spectral-Domain Interferometry . | PHOTONICS , 2024 , 11 (5) . |
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The paper proposes an unsupervised deep convolutional dynamic joint distribution domain adaptive network model for the problem of bearing fault diagnosis under variable conditions, which involves missing labeling of target domain data and large differences in the distribution of source and target domain data. The model consists of the following steps: (1) converting the original vibration signal of the bearing into a time-frequency map representation and performing feature extraction on the labeled source domain samples and the unlabeled target domain samples by the deep convolutional feature extractor; (2) dynamically aligning the marginal distribution and conditional distribution of the two domain features by the marginal distribution adaptation module and the conditional distribution adaptation module, so that the trained network model can classify the unlabeled target domain samples accurately according to the label mapping relationship of the source domain samples; (3) validating the model on two rolling bearing datasets; (4) experiment with model interpretability in conjunction with XAI techniques to help us understand what the model actually does. The experimental results on two rolling bearing datasets show the validity of the proposed model.
Keyword ：
Deep domain adaption Deep domain adaption Fault diagnosis Fault diagnosis Rolling bearing Rolling bearing Variable conditions Variable conditions
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| GB/T 7714 | Zhong, Jianhua , Lin, Cong , Gao, Yang et al. Fault diagnosis of rolling bearings under variable conditions based on unsupervised domain adaptation method [J]. | MECHANICAL SYSTEMS AND SIGNAL PROCESSING , 2024 , 215 . |
| MLA | Zhong, Jianhua et al. "Fault diagnosis of rolling bearings under variable conditions based on unsupervised domain adaptation method" . | MECHANICAL SYSTEMS AND SIGNAL PROCESSING 215 (2024) . |
| APA | Zhong, Jianhua , Lin, Cong , Gao, Yang , Zhong, Jianfeng , Zhong, Shuncong . Fault diagnosis of rolling bearings under variable conditions based on unsupervised domain adaptation method . | MECHANICAL SYSTEMS AND SIGNAL PROCESSING , 2024 , 215 . |
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A composite tape-spring (CTS) structure is a thin-walled open slit tube with fibres oriented at +/- 45, which is stable in both extended and coiled configurations. The governing factors of its bistability include composite constitutive behaviour, initial geometrical proportions, and geometrically non-linear structural behaviour. Its bistable principle can be employed to produce a flexible multistable hinge structure with tailorable stability. This is achieved by introducing variable stiffness design within a cylindrical shell structure, where folding stability is dependent on central functional patch region, and then connected to linking ploy regions. Thus, a novel multistable composite hinge structure can be designed with positive Gaussian curvature deformation, and its multistability is highly tailorable: a lengthy one-dimensional mechanical arm can be designed to coil and fold multiple times to enable large folding ratio. An analytical model was established based on the strain energy principle, in order to determine effects from functional tape length; the typical structural stability and stable configurations were then predicted with respect to regional length of the functional layer. It is found that the stability of a multistable composite hinge structure is dependent on geometry and combination of both the functional patch region, and connecting ploy region; the stable criteria are then proposed and show good agreement with experimental observations and FE analysis. These enrich the diversities of functional deployable structures to benefit novel requirements for various deployable mechanisms, and enable customised design, as well as smart driving for flexible and multifunctional mechanical composite hinge applications.
Keyword ：
Composite Composite Hinge Hinge Mechanics Mechanics Multistable Multistable
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| GB/T 7714 | Zhao, Chenmin , Lin, Xinyu , Wang, Bing et al. A multistable composite hinge structure [J]. | THIN-WALLED STRUCTURES , 2024 , 198 . |
| MLA | Zhao, Chenmin et al. "A multistable composite hinge structure" . | THIN-WALLED STRUCTURES 198 (2024) . |
| APA | Zhao, Chenmin , Lin, Xinyu , Wang, Bing , Zhu, Juncheng , Guan, Chenglong , Zhong, Shuncong . A multistable composite hinge structure . | THIN-WALLED STRUCTURES , 2024 , 198 . |
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Electromagnetic metamaterials feature the capability of squeezing photons into hotspot regions of high intensity near-field enhancement for strong light-matter interaction, underpinning the next generation of emerging biosensors. However, randomly dispersed biomolecules around the hotspots lead to weak interactions. Here, we demonstrate an all-silicon dielectric terahertz metamaterial sensor design capable of passively trapping biomoleculars into the resonant cavities confined with powerful electric field. Specifically, multiple controllable high-quality factor resonances driven by bound states in the continuum (BIC) are realized by employing longitudinal symmetry breaking. The dielectric metamaterial sensor with nearly 15.2 experimental figure-of-merit enabling qualitative and quantitative identification of different amino acids by delivering biomolecules to the hotspots for strong light-matter interactions. It is envisioned that the presented strategy will enlighten highperformance meta-sensors design from microwaves to visible frequencies, and serve as a potential platform for microfluidic sensing, biomolecular capture, and sorting devices.
Keyword ：
All-dielectric metamaterials All-dielectric metamaterials Biosensors Biosensors Bound states in the continuum Bound states in the continuum Terahertz Terahertz
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| GB/T 7714 | Lin, Tingling , Huang, Yi , Zhong, Shuncong et al. Passive trapping of biomolecules in hotspots with all-dielectric terahertz metamaterials [J]. | BIOSENSORS & BIOELECTRONICS , 2024 , 251 . |
| MLA | Lin, Tingling et al. "Passive trapping of biomolecules in hotspots with all-dielectric terahertz metamaterials" . | BIOSENSORS & BIOELECTRONICS 251 (2024) . |
| APA | Lin, Tingling , Huang, Yi , Zhong, Shuncong , Shi, Tingting , Sun, Fuwei , Zhong, Yujie et al. Passive trapping of biomolecules in hotspots with all-dielectric terahertz metamaterials . | BIOSENSORS & BIOELECTRONICS , 2024 , 251 . |
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While thermal barrier coatings (TBCs) are being sprayed onto aero-engine turbine blades, or while the engine blade is working, high temperatures and strong impact forces will damage TBCs under thermal cycles, resulting in the coating peeling off from the blades. The current method of using ECT, IRT, or another method alone cannot achieve the real-time detection of coating defects with both high precision and high penetration power. Two detection methods, namely, terahertz pulsed imaging (TPI) and optical coherence tomography (OCT), were combined to evaluate typical defects observed in TBCs (including internal debonding cracks, surface high-temperature cracks, and surface etched cracks). The results showed that the OCT system successfully obtained the micron-level axial resolution, but the detection depth of the OCT system was limited. The TPI system achieved a higher penetration depth than OCT-hence, it can be used for the nondestructive detection and evaluation of the internal debonding defects in the sample-but its resolution needs to be improved. Following this conclusion, a method is proposed using TPI and OCT concurrently for the nondestructive testing and quantitative evaluation of TBCs on etched cracks, thus achieving progress both in terms of depth and resolution. In our experiment, defects with a depth of 519 mu m and a width of 100 mu m were measured. The proposed method is suitable for situations where multiple defects in TBC samples of blades need to be detected simultaneously during the working process. When there are defects deep inside the sample, more small cracks on the surface can be evaluated to achieve a combination of depth and accuracy.
Keyword ：
defects detection defects detection depth depth optical coherence tomography optical coherence tomography resolution resolution terahertz pulsed imaging terahertz pulsed imaging thermal barrier coatings thermal barrier coatings
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| GB/T 7714 | Luo, Manting , Zhong, Shuncong , Huang, Yi et al. Combined Terahertz Pulsed Imaging and Optical Coherence Tomography Detection Method for Multiple Defects in Thermal Barrier Coatings [J]. | COATINGS , 2024 , 14 (4) . |
| MLA | Luo, Manting et al. "Combined Terahertz Pulsed Imaging and Optical Coherence Tomography Detection Method for Multiple Defects in Thermal Barrier Coatings" . | COATINGS 14 . 4 (2024) . |
| APA | Luo, Manting , Zhong, Shuncong , Huang, Yi , Zhang, Zhenghao , Tu, Wanli . Combined Terahertz Pulsed Imaging and Optical Coherence Tomography Detection Method for Multiple Defects in Thermal Barrier Coatings . | COATINGS , 2024 , 14 (4) . |
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As a promising nondestructive testing (NDT) technique with a very adaptive physical modeling of wave transmission process, terahertz technology is used for the detection and characterization of nonpolar materials and the evaluation of layered and/or defective structures. THz-TDS can also be used to perform spectroscopic analysis and detect structural defects in thermal barrier coatings (TBCs) of aero-engines. Although it is generally difficult to measure the structure of the thin oxide layer of the thermal barrier coatings whose thickness is generally lower than 30 g m (the current axial resolution of the THz-TDS cannot exceed 30 g m). We were able to complete the detection of the oxide layer within 1-29 g m through simulation by using the SWT-BP algorithm. In this study, the analysis was performed on real -world samples, the fitting degree of the SWT-BP algorithm reached 0.77, and the minimum prediction error was less than 0.1 g m. The paper also put forward some improvement measures about the experimental results. (c) 2024 Optica Publishing Group
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| GB/T 7714 | Luo, Manting , Zhong, Shuncong , Huang, Yi et al. Experimental study of a thin thermally grown oxide layer in thermal barrier coatings based on the SWT-BP algorithm and terahertz technology [J]. | APPLIED OPTICS , 2024 , 63 (13) : 3430-3437 . |
| MLA | Luo, Manting et al. "Experimental study of a thin thermally grown oxide layer in thermal barrier coatings based on the SWT-BP algorithm and terahertz technology" . | APPLIED OPTICS 63 . 13 (2024) : 3430-3437 . |
| APA | Luo, Manting , Zhong, Shuncong , Huang, Yi , Zhang, Zhenghao , Nsengiyumva, Walter , Tu, Wanli . Experimental study of a thin thermally grown oxide layer in thermal barrier coatings based on the SWT-BP algorithm and terahertz technology . | APPLIED OPTICS , 2024 , 63 (13) , 3430-3437 . |
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A nonlinear chirp is always introduced to an interference fringe in the Fourier domain optical coherence tomography (FD-OCT), which can be regarded as an amplitude-modulated and frequency-modulated nonstationary signal. It is mainly caused by the non-uniform wavenumber sampling and the dispersion mismatch between the sample and the reference arms. It results in the broadening of the axial point spread function and the degradation of the axial resolution. In this paper, the parameterized instantaneous frequency estimation method (PIFEM) is applied to estimate the phase function of the chirped interference fringe to achieve the linear resampling of the wavenumber space and the rebalance of the dispersion mismatch. The proposed method is efficient and convenient that requires only two interference fringes corresponding to a mirror at different depths in the sample arm of the FD-OCT system. In addition, it is proved that the PIFEM is adapted to compensate for the depthindependent dispersion mismatch caused by the sample comprised of layered structures. The experiment results validate the performance of the proposed method.
Keyword ：
Dispersion compensation Dispersion compensation estimation estimation Optical coherence tomography Optical coherence tomography Parameterized instantaneous frequency Parameterized instantaneous frequency Wavenumber calibration Wavenumber calibration
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| GB/T 7714 | Huang, Yuexin , Deng, Yaosen , Lin, Jiewen et al. Wavenumber calibration and dispersion compensation for Fourier domain optical coherence tomography by parameterized instantaneous frequency estimation method [J]. | OPTICS AND LASER TECHNOLOGY , 2024 , 174 . |
| MLA | Huang, Yuexin et al. "Wavenumber calibration and dispersion compensation for Fourier domain optical coherence tomography by parameterized instantaneous frequency estimation method" . | OPTICS AND LASER TECHNOLOGY 174 (2024) . |
| APA | Huang, Yuexin , Deng, Yaosen , Lin, Jiewen , Zhang, Qiukun , Zhong, Shuncong . Wavenumber calibration and dispersion compensation for Fourier domain optical coherence tomography by parameterized instantaneous frequency estimation method . | OPTICS AND LASER TECHNOLOGY , 2024 , 174 . |
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A bistable composite tape-spring (CTS) structure is stable in both extended and coiled configurations, which can be fully coiled or folded. Its bistable coiling feature has been employed in a Roll-Out Solar Array and successfully deployed in space; its foldable characteristics is analogous to a flexible mechanical hinge, showing great potential to be applied in an aircraft landing gear. Both the structural coiling and folding mechanics are dependent on tape geometry; whilst the correlated scale effect has not been investigated, which significantly constrains its foldable mechanical hinge designs and smart driving analysis in order to further reduce weight and complexity for conventional mechanical hinges. Here, we studied the folding stability mechanics of the CTS structure towards its full tape-length range, where novel stress and shape transitional mechanisms are revealed. This is achieved by investigating the quasi-static folding process of the CTS, where new stable shape features in terms of critical transitional length and stable folded angle are observed and identified through experimental observations, finite element model, as well as theoretical analysis. Theoretical criteria were then determined from the strain energy analysis in comparison to the predefined folded tape shape features. The folding stability mechanisms towards its full tape-length range were proposed in order to facilitate customized flexible hinge design and in-situ smart driving analysis in order to replace conventional mechanical hinges.
Keyword ：
Composite Composite Folding Folding Mechanism Mechanism Stability Stability Tape-spring Tape-spring
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| GB/T 7714 | Chen, Hui , Wang, Bing , Lin, Xueqi et al. Folding mechanics of a bistable composite tape-spring for flexible mechanical hinge [J]. | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES , 2024 , 272 . |
| MLA | Chen, Hui et al. "Folding mechanics of a bistable composite tape-spring for flexible mechanical hinge" . | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 272 (2024) . |
| APA | Chen, Hui , Wang, Bing , Lin, Xueqi , Seffen, Keith A. , Zhong, Shuncong . Folding mechanics of a bistable composite tape-spring for flexible mechanical hinge . | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES , 2024 , 272 . |
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