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学者姓名：钟舜聪
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In response to the need for multiple complete bearing degradation datasets in traditional deep learning networks to predict the impact on individual bearings, a novel deep learning-based rolling bearing remaining life prediction method is proposed in the absence of fully degraded bearng data. This method involves processing the raw vibration data through Channel-wise Attention Encoder (CAE) from the Encoder-Channel Attention (ECA), extracting features related to mutual correlation and relevance, selecting the desired characteristics, and incorporating the selected features into the constructed Autoformer-based time prediction model to forecast the degradation trend of bearings' remaining time. The feature extraction method proposed in this approach outperforms CAE and multilayer perceptual-Attention Encoder in terms of feature extraction capabilities, resulting in reductions of 0.0059 and 0.0402 in mean square error, respectively. Additionally, the indirect prediction approach for the degradation trend of the target bearing demonstrates higher accuracy compared to Informer and Transformer models, with mean square error reductions of 0.3352 and 0.1174, respectively. This suggests that the combined deep learning model proposed in this paper for predicting rolling bearing life may be a more effective life prediction method deserving further research and application.
Keyword ：
Autoformer Autoformer deep learning deep learning rolling bearings rolling bearings
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| GB/T 7714 | Zhong, Jianhua , Li, Huying , Chen, Yuquan et al. Remaining Useful Life Prediction of Rolling Bearings Based on ECA-CAE and Autoformer [J]. | BIOMIMETICS , 2024 , 9 (1) . |
| MLA | Zhong, Jianhua et al. "Remaining Useful Life Prediction of Rolling Bearings Based on ECA-CAE and Autoformer" . | BIOMIMETICS 9 . 1 (2024) . |
| APA | Zhong, Jianhua , Li, Huying , Chen, Yuquan , Huang, Cong , Zhong, Shuncong , Geng, Haibin et al. Remaining Useful Life Prediction of Rolling Bearings Based on ECA-CAE and Autoformer . | BIOMIMETICS , 2024 , 9 (1) . |
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Multiple modes resonance provides the possibility of broadband filtering and has great potential applications in terahertz devices, including miniaturized spectrometers, hyperspectral imagers and optical switches in communication systems. However, it is difficult to further expand the bandwidth range due to the inability to stack an infinite number of resonant structures in a finite space. Here, an innovative method is reported for manipulating two localized surface plasmon polaritons (LSPP) modes by multiscale-coupled plasmonic fields to realize broadband filtering at terahertz (THz) frequencies. The interaction between two LSPP modes was verified theoretically and experimentally, exhibiting a prominent Rabi splitting and two peaks with high transmittance. Particularly, broadband filtering is accomplished by utilizing a double-layer structure that can be regarded as a cavity for inducing far-field interference. Experimental result demonstrates that the maximum transmission range of the bilayer metamaterial reaches 0.63 THz. Besides, the two wide bands can be integrated into one broadband through near-field coupling effects. The integration of strong coupling and far-field interference expands the transmission range of the double-layer metamaterial, further enhancing its capability for broadband filtering. This unique approach for manipulating multi-mode plasmonic coupling forges a convenient route for realizing broadband filtering.
Keyword ：
Broadband filtering Broadband filtering Far-field interference Far-field interference Multiple plasmon modes Multiple plasmon modes Strong coupling effect Strong coupling effect Terahertz metamaterials Terahertz metamaterials
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| GB/T 7714 | Zeng, Qiuming , Huang, Yi , Zhong, Shuncong et al. Manipulating multiple plasmon modes by coupling fields for broadband filtering in terahertz metamaterials [J]. | OPTICS AND LASER TECHNOLOGY , 2024 , 168 . |
| MLA | Zeng, Qiuming et al. "Manipulating multiple plasmon modes by coupling fields for broadband filtering in terahertz metamaterials" . | OPTICS AND LASER TECHNOLOGY 168 (2024) . |
| APA | Zeng, Qiuming , Huang, Yi , Zhong, Shuncong , Shi, Tingting , Chen, Jianxiong , Zhong, Yujie et al. Manipulating multiple plasmon modes by coupling fields for broadband filtering in terahertz metamaterials . | OPTICS AND LASER TECHNOLOGY , 2024 , 168 . |
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针对高性能太赫兹功能器件的规范化设计需求,本文将智能逆向设计方法应用于太赫兹带通滤波器的设计与优化中.建立与数字空间映射的亚波长超表面等效模型,从设定器件的目标功能和约束条件出发,利用智能算法探索整个解空间中的全部可能结构,迭代寻优至最优结构图案.本文利用搭建的逆向设计框架设计了中心频率为0.51 THz、带宽为41.5 GHz、插入损耗为–0.1071 dB的太赫兹带通滤波器.与传统的人工正向设计相比,逆向设计方法可解构出窄带、低插入损耗、带外抑制强、极化稳定性强的带通滤波器.
Keyword ：
太赫兹超表面 太赫兹超表面 数字编码 数字编码 映射建模 映射建模 逆向设计 逆向设计
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| GB/T 7714 | 居学尉 , 张林烽 , 黄峰 et al. 数字型太赫兹带通滤波器的逆向设计及优化 [J]. | 物理学报 , 2024 , 73 (06) : 50-57 . |
| MLA | 居学尉 et al. "数字型太赫兹带通滤波器的逆向设计及优化" . | 物理学报 73 . 06 (2024) : 50-57 . |
| APA | 居学尉 , 张林烽 , 黄峰 , 朱国锋 , 李淑锦 , 陈燕青 et al. 数字型太赫兹带通滤波器的逆向设计及优化 . | 物理学报 , 2024 , 73 (06) , 50-57 . |
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由于将莫尔条纹图进行快速傅里叶变换时会导致频谱泄露，导致无法实现360°的全周精确测量，因此提出基于莫尔条纹的全周转角测量方法并搭建转角测量系统。以1°为步距，利用CMOS相机采集不同宽度的莫尔条纹图像，采用快速傅里叶变换（fast Fourier transform, FFT）对条纹进行处理，得到光栅频谱信息。同时采用汉宁窗能量重心校正算法（Hanning-window energy centrobaric method, HnWECM）校正频谱，得到莫尔条纹图像表征转角的真实有效信息，实现全周精确测量。实验结果表明，该系统可快速精准地实现转角的全周测量，测量范围广，最大误差率为0.243 3%。
Keyword ：
快速傅里叶变换 快速傅里叶变换 汉宁窗能量重心法 汉宁窗能量重心法 莫尔条纹 莫尔条纹 转角测量 转角测量
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| GB/T 7714 | 许令鸿 , 张秋坤 , 林杰文 et al. 基于莫尔条纹的全周转角精密测量方法 [J]. | 应用光学 , 2024 , 45 (03) : 644-651 . |
| MLA | 许令鸿 et al. "基于莫尔条纹的全周转角精密测量方法" . | 应用光学 45 . 03 (2024) : 644-651 . |
| APA | 许令鸿 , 张秋坤 , 林杰文 , 李劲林 , 黎昕婷 , 钟舜聪 . 基于莫尔条纹的全周转角精密测量方法 . | 应用光学 , 2024 , 45 (03) , 644-651 . |
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In this paper, an ingenious reverse design method is applied to the design and optimization of terahertz bandpass filters in order to achieve standardized design of high-performance terahertz functional devices. An equivalent model of subwavelength metasurface mapped to digital space is established. Based on ideal objective functions and constraints, intelligent algorithms begin a bold journey to explore the vast potential structure in the solution space. Through iterative refinement, the algorithm reveals optimal structural patterns, unlocking areas of unparalleled performance. The direct binary search (DBS) algorithm and the binary particle swarm optimization (BPSO) algorithm are compared in optimization process. When using the DBS algorithm to optimize the design area, it takes a long time to poll the logic states of all pixel units point by point, and it is easy to get stuck in the local optimal value. However, BPSO algorithm has stronger global search capabilities, faster convergence speed, and higher accuracy. Through a comprehensive comparison of the device performance optimized by the two algorithms, the solution optimized by BPSO algorithm has better out-of-band suppression performance and a narrower full width at half peak, but slightly lower transmittance at the center frequency. The bandpass filter has a center frequency of 0.51 THz, a bandwidth of 41.5 GHz, and an insertion loss of -0.1071 dB. When considering computational efficiency, DBS algorithm lags behind, the simulation time is 11550 s, while BPSO algorithm only needs 9750 s. Compared with the traditional forward design, the reverse design method can achieve the narrower band, lower insertion loss, better out-of-band suppression and polarization stability. The fine structural changes of the optimal results have a significant influence on spectral performance, demonstrating the superiority and uniqueness of reverse design. This technology contributes to the design and optimization of high-performance and novel functional devices.
Keyword ：
digital encoding digital encoding mapping and modeling mapping and modeling reverse design reverse design terahertz metasurface terahertz metasurface
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| GB/T 7714 | Ju Xue-Wei , Zhang Lin-Feng , Huang Feng et al. Reverse design and optimization of digital terahertz bandpass filters [J]. | ACTA PHYSICA SINICA , 2024 , 73 (6) . |
| MLA | Ju Xue-Wei et al. "Reverse design and optimization of digital terahertz bandpass filters" . | ACTA PHYSICA SINICA 73 . 6 (2024) . |
| APA | Ju Xue-Wei , Zhang Lin-Feng , Huang Feng , Zhu Guo-Feng , Li Shu-Jin , Chen Yan-Qing et al. Reverse design and optimization of digital terahertz bandpass filters . | ACTA PHYSICA SINICA , 2024 , 73 (6) . |
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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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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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Terahertz metamaterial absorbers (TMAs) have exhibited significant potential in high-speed communication, sensing, and imaging, attributed to their thin thickness and excellent wave-absorbing capabilities. However, traditional sandwich-structured metamaterial (MM) absorbers lack the tunable absorption performance once fabricated, severely limiting their applications. In this article, we propose a tunable TMA by integrating liquid crystal (LC) within the MM as a dielectric layer. By applying a bias electric field, the refractive index of the LC can be changed, thereby achieving the tunable resonant frequency. Particularly, the dual-band absorption and polarization insensitivity is accomplished through a symmetrical porous mesh structure, which can induce double magnetic dipole resonance modes, and this expands the tunable frequency range of the absorber. Simulation results show that the two resonant frequencies can be continuously tuned from 0.266 to 0.294 THz and from 0.358 to 0.394 THz, with a tunability of 9.5% and 9.1%, respectively. This novel design provides an effective method for developing tunable TMAs, holding great significance in advancing the performance of terahertz (THz) devices.
Keyword ：
Liquid crystals (LCs) Liquid crystals (LCs) metamaterials (MMs) metamaterials (MMs) terahertz (THz) terahertz (THz) tunable absorbers tunable absorbers
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| GB/T 7714 | Huang, Yi , Lan, Yehong , Zhong, Shuncong et al. Design of Tunable Dual-Band Terahertz Metamaterial Absorber With Liquid Crystal Integrated On-Chip [J]. | IEEE TRANSACTIONS ON PLASMA SCIENCE , 2024 . |
| MLA | Huang, Yi et al. "Design of Tunable Dual-Band Terahertz Metamaterial Absorber With Liquid Crystal Integrated On-Chip" . | IEEE TRANSACTIONS ON PLASMA SCIENCE (2024) . |
| APA | Huang, Yi , Lan, Yehong , Zhong, Shuncong , Sun, Fuwei , Zhong, Yujie , Lin, Tingling et al. Design of Tunable Dual-Band Terahertz Metamaterial Absorber With Liquid Crystal Integrated On-Chip . | IEEE TRANSACTIONS ON PLASMA SCIENCE , 2024 . |
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The outstanding performance of current machine-learning fault diagnosis methods is mainly attributed to the availability of a large amount of labeled training data. However, in practical dynamic weighing systems, the high costs and variability of operating conditions limit the availability of reliable training data, hampering engineering fault diagnoses in dynamic weighing systems. To address this issue, this study proposes a novel cross-sensor fault diagnosis method based on multi-feature fusion using a transfer component analysis (TCA)-weighted k-nearest-neighbor (WKNN) network. Using this method, time- and frequency-domain features are extracted from a laboratory-simulated set of fault data with small batches of real operational data. Source and target domain features are fused, and TCA is applied to map the source and target domain samples to a latent space using kernel functions to reduce the distribution differences among the samples. Finally, the WKNN is employed as a metric learner to enhance small-sample data matching and classification to improve diagnostic accuracy. The results show that with three samples per support set, the proposed method achieves a diagnostic accuracy of 93.33%. Compared with other approaches, the proposed method exhibits stronger generalizability for diagnostic knowledge transference from sensor to dynamic weighing failure data, effectively improving precision in on-site small-sample environments and reducing sample imbalances.
Keyword ：
cross-sensor cross-sensor dynamic weighing system dynamic weighing system fault diagnosis fault diagnosis multi-feature fusion multi-feature fusion transfer component analysis transfer component analysis weighted k-nearest neighbor algorithm weighted k-nearest neighbor algorithm
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| GB/T 7714 | Liang, Wei , Chen, Zhixiong , Zhong, Jianhua et al. Multi-feature fusion-based TCA-WKNN cross-sensor fault diagnosis method for dynamic weighing [J]. | MEASUREMENT SCIENCE AND TECHNOLOGY , 2024 , 35 (1) . |
| MLA | Liang, Wei et al. "Multi-feature fusion-based TCA-WKNN cross-sensor fault diagnosis method for dynamic weighing" . | MEASUREMENT SCIENCE AND TECHNOLOGY 35 . 1 (2024) . |
| APA | Liang, Wei , Chen, Zhixiong , Zhong, Jianhua , Liao, Huazhong , Zhong, Shuncong . Multi-feature fusion-based TCA-WKNN cross-sensor fault diagnosis method for dynamic weighing . | MEASUREMENT SCIENCE AND TECHNOLOGY , 2024 , 35 (1) . |
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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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