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学者姓名：钟舜聪
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Accurate prediction of the remaining useful life (RUL) of rolling bearings in mechanical equipment is crucial for ensuring the reliable operation of equipment and implementing effective maintenance measures. It also plays a key role in safeguarding personnel and property by reducing the risk of failures. Recently, converting monitoring data into a graph structure to capture the mutual influence between samples has emerged as an innovative approach in RUL prediction. However, existing methods cannot effectively extract features from graph-structured data with varying receptive fields and establish strong dependencies between nodes. This research proposes a novel bearing RUL prediction model based on the multi-region hypergraph self-attention network (M-HGSAN) to address these challenges. Firstly, the original data is concatenated and resampled using the sliding window with width L, and the two-dimensional sample set is constructed by time domain feature and frequency domain feature, which enriches the diversity of samples. The multi-scale synchronous semi-shrink attention network (MSSSAN) is used to obtain different channel features and multi-region features from different receptive fields, which enhances the dependence between features. Secondly, a hypergraph selfattention network (HGSAN) is designed, which combines the advantages of a hypergraph neural network (HGNN) and a self-attention mechanism. Obtain the ability to learn higher-order correlation and key features between nodes. In addition, the data is fed into residual stacked gated recurrent units (RSGRU) and fully connected (FC) layers to capture the nodes' temporal sequence features and predict the bearings' RUL. Finally, model interpretability experiments are carried out with XAI technology to help us understand the influence of each feature on RUL. Experimental results demonstrate the effectiveness of the M-HGSAN model, highlighting its potential to significantly enhance predictive maintenance strategies in industrial applications, thereby improving equipment reliability and safety.
Keyword ：
Attention Attention GRU GRU Hypergraph neural network Hypergraph neural network Residual Residual RUL RUL
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| GB/T 7714 | Zhong, Jianhua , Jiang, Haifeng , Gu, Kairong et al. Remaining useful life prediction of rolling bearing based on multi-region hypergraph self-attention network [J]. | MECHANICAL SYSTEMS AND SIGNAL PROCESSING , 2025 , 225 . |
| MLA | Zhong, Jianhua et al. "Remaining useful life prediction of rolling bearing based on multi-region hypergraph self-attention network" . | MECHANICAL SYSTEMS AND SIGNAL PROCESSING 225 (2025) . |
| APA | Zhong, Jianhua , Jiang, Haifeng , Gu, Kairong , Zhong, Shuncong . Remaining useful life prediction of rolling bearing based on multi-region hypergraph self-attention network . | MECHANICAL SYSTEMS AND SIGNAL PROCESSING , 2025 , 225 . |
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The input-output relationship of inductive displacement sensors is typically nonlinear, which demands numerous computational resources for precise calculation. Therefore, the traditional analytical methods for the inductive displacement sensors cannot meet the real-time high-precision measurement requirements. In response to the aforementioned issues, this paper proposes an optimized Long Short-Term Memory (LSTM) neural networks based on one-dimensional convolutional neural networks (1DCNN) to modeling the input-output relationship of the inductive displacement sensor. First, the measurement principle of the inductive displacement sensors was analyzed, and the analytical model of the sensor output was derived. And the influences of the key parameters of sensors on the relationship between the induced voltage and the displacement were studied. Then, the 1DCNN-LSTM-AT network for modelling the input-output relationship of the inductive displacement sensor was studied. The spatial features of historical induced electromotive force (EMF) data generated by the induction coil were initially extracted using the 1DCNN network. And these spatial features were then utilized as input to the LSTM neural network to capture the temporal features of the historical induced EMF data. Subsequently, the spatiotemporal features of the induced EMF data were fed into the regression prediction layer to compute the displacement measurement results corresponding to the current input. Moreover, the attention mechanism was used for the 1DCNN-LSTM model to enhance the prediction accuracy and stability of the model. Finally, the experimental results demonstrate that the proposed 1DCNN-LSTM-AT model achieves an average absolute percentage error (MAPE) of 3.1%, significantly outperforming traditional models such as LSTM (29.3%), CNN (4.7%), and ANN (4.3%). This paper provides a new method for modelling the nonlinear relationships of the inductive displacement sensor, and presents a fresh perspective for research in the data processing of nonlinear sensors.
Keyword ：
1DCNN 1DCNN attention mechanism attention mechanism inductive displacement sensor inductive displacement sensor LSTM LSTM nonlinear mapping nonlinear mapping
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| GB/T 7714 | Li, Jinlin , Yang, Xinyue , Zhong, Shuncong et al. Modeling of an inductive displacement sensor based on 1DCNN-LSTM-AT [J]. | MEASUREMENT SCIENCE AND TECHNOLOGY , 2025 , 36 (1) . |
| MLA | Li, Jinlin et al. "Modeling of an inductive displacement sensor based on 1DCNN-LSTM-AT" . | MEASUREMENT SCIENCE AND TECHNOLOGY 36 . 1 (2025) . |
| APA | Li, Jinlin , Yang, Xinyue , Zhong, Shuncong , Liang, Wei , Guo, Qiaoying . Modeling of an inductive displacement sensor based on 1DCNN-LSTM-AT . | MEASUREMENT SCIENCE AND TECHNOLOGY , 2025 , 36 (1) . |
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A bistable composite tape-spring (CTS) structure is a thin-walled open slit tube with fibres oriented at +/- 45 degrees, which is stable at both the extended and fully coiled configurations. Owning to its positive Gaussian curvature deformation mechanics and high stowage-to-pack ratio, it has been successfully applied and launched to International Space Station and microsatellites to construct deployable solar sails. Intelligent driving designs of the CTS-based deployable structures are becoming more and more important to further reduce weight and complexities for space applications. Here, we presented novel findings on the passive thermal driving mechanics of the bistable CTS structure. This is achieved by exploring the thermal energy-induced microstructural expansion and contraction, which would change the structural curvature, and thus regulating the strain energy within the CTS. An analytical model on the strain energy evolution under thermal effects was established to predict the minimum stable shape transition paths, as well as to determine the critical boundary conditions for thermal driving. Both experiments and finite element model were then carried out to reveal underlying mechanisms. It is found that a CTS is able to be passively deployed under thermal energy, there is a minimum energy constraint to initiate the shape morphing process, and the critical boundaries are dependent on the thermal expansion of the structural material. These findings provide a novel low cost, simple and reversed smart morphing design principle of the CTS structure, enriching the theoretical analysis and deployable control of the bistable composites to benefit future deep space explorations.
Keyword ：
Bistable Bistable Composite Composite Mechanism Mechanism Strain energy Strain energy Thermal driving Thermal driving
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| GB/T 7714 | Peng, Yulin , Zhu, Juncheng , Wang, Bing et al. Passive thermal driving mechanics of a bistable composite tape-spring [J]. | THIN-WALLED STRUCTURES , 2025 , 210 . |
| MLA | Peng, Yulin et al. "Passive thermal driving mechanics of a bistable composite tape-spring" . | THIN-WALLED STRUCTURES 210 (2025) . |
| APA | Peng, Yulin , Zhu, Juncheng , Wang, Bing , Guan, Chenglong , Zhong, Jianfeng , Zhong, Shuncong . Passive thermal driving mechanics of a bistable composite tape-spring . | THIN-WALLED STRUCTURES , 2025 , 210 . |
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This article proposes an instantaneous rotational speed (IRS) sensing method that utilizes a circumferential constant-density-sine fringe pattern (CCDSFP) captured by a linear array sensor (LAS). A novel mathematical imaging model has been established to develop a mapping relationship between the correlation coefficient (CC) value of adjacent frame fringe signals and the IRS. The influence of various factors on the sensing performance was thoroughly investigated through simulations and experiments. The results indicate that this method demonstrates satisfactory measurement accuracy within the measurement range from 0 r/min to the maximum measurable rotation speed. The innovation of this method lies in using only a single line of fringe signal captured by LAS for sensing the rotation speed, which offers significant advantages in rotation speed sensing and computational efficiency compared to the area-array camera-based method. Moreover, the new speed encoding and estimation methods exhibit very high sensitivity and accuracy for very low and high rotation speeds. Compared to encoders based on pulse counting during a unit time or time interval estimation between two pulses, the proposed method provides higher temporal resolution and angular resolution for rotation speed measurement. Furthermore, this novel sensing method offers a nonintrusive approach that has no additional mass effect on the shaft, and it could be used for the development of a new kind of IRS sensor.
Keyword ：
Accuracy Accuracy Cameras Cameras Circumferential constant-density-sine fringe pattern (CCDSFP) Circumferential constant-density-sine fringe pattern (CCDSFP) correlation coefficient (CC) correlation coefficient (CC) instantaneous rotational speed (IRS) instantaneous rotational speed (IRS) Optical imaging Optical imaging Optical sensors Optical sensors Optical variables measurement Optical variables measurement Rotation measurement Rotation measurement Shafts Shafts Temperature measurement Temperature measurement Velocity control Velocity control vision-based measurement vision-based measurement Visualization Visualization
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| GB/T 7714 | Zhong, Jianfeng , Chi, Shoujiang , Liu, Dongming et al. Instantaneous Rotational Speed-Sensing Method Using Circumferential Constant-Density-Sine Fringe Pattern [J]. | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT , 2025 , 74 . |
| MLA | Zhong, Jianfeng et al. "Instantaneous Rotational Speed-Sensing Method Using Circumferential Constant-Density-Sine Fringe Pattern" . | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT 74 (2025) . |
| APA | Zhong, Jianfeng , Chi, Shoujiang , Liu, Dongming , Feng, Bin , Zhong, Shuncong . Instantaneous Rotational Speed-Sensing Method Using Circumferential Constant-Density-Sine Fringe Pattern . | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT , 2025 , 74 . |
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Accurate rotational speed measurement is a prerequisite for realizing the condition monitoring and fault diagnosis of rotating equipment. This study proposes a novel rotational speed measurement method based on optical coherent displacement measurement. An optical coherence system is used to measure the relative depth of the shaft surface with uniformly etched micro-indentations on the circumferential surface. Fast Fourier transform (FFT) and the Hanning window energy centrobaric method (HnWECM) are used to process the collected photoelectric signals to obtain depth information and thereby realize the measurement of surface microindentations. During the operation, the rotational speed of the shaft is obtained by calculating the ratio of the angular difference between the relative depth of the rectangular pulses of the surface and the time interval. The experimental validation of the response is performed. The experimental results show that in the range of 0 rpm to 60 rpm, the indication error is <1 %, the nonlinearity error is <0.3584 %, and the repeatability error is <0.28 %. In the range of 0 rpm to 600 rpm, the rotational speed measurement method performed well with an indication error of <0.5 %, a maximum nonlinear error of 0.22 %, and a repeatability error of no >0.28 %. Compared with the results reported in existing literature, the proposed method offers advantages in terms of accuracy, linearity, and repeatability.
Keyword ：
FFT FFT Hanning window Hanning window Micro-indentation Micro-indentation Optical measurement Optical measurement Rotational speed measurement Rotational speed measurement
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| GB/T 7714 | Liang, Wei , Hong, Xiaodong , Huang, Dichang et al. Novel rotational speed measuring method based on micro-indentation-shaft detected by optical coherent system [J]. | OPTICS AND LASERS IN ENGINEERING , 2025 , 184 . |
| MLA | Liang, Wei et al. "Novel rotational speed measuring method based on micro-indentation-shaft detected by optical coherent system" . | OPTICS AND LASERS IN ENGINEERING 184 (2025) . |
| APA | Liang, Wei , Hong, Xiaodong , Huang, Dichang , Chen, Linnan , Zhong, Jianfeng , Zhang, Qiukun et al. Novel rotational speed measuring method based on micro-indentation-shaft detected by optical coherent system . | OPTICS AND LASERS IN ENGINEERING , 2025 , 184 . |
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Structural defects in self-lubricating sliding bearings would lead to local stress concentration and service life reduction. The absence of accurate detection technology for micro defects in self-lubricating coating has seriously limited their application in mechanical equipment. A total variation (TV) fusion terahertz imaging method is proposed toward the unidentifiable micro defect induced by overlapping terahertz echoes. First, a range of indicators is developed to quantify the alterations of signal characteristics in different stages of the defect. Subsequently, the TV fusion based on these indicator images could clearly identify different defects. After that, a multinomial regression model is established through the mathematical relation of defect thicknesses and indicators, thus the defect thickness could be obtained accurately. The experimental results for surface defect detection and internal delamination measurement demonstrate the high accuracy and excellent robustness of the proposed method, making it attractive for defect detection and quality assessment of self-lubricating coating.
Keyword ：
Coatings Coatings Defect detection Defect detection Delamination Delamination Optical surface waves Optical surface waves Scanning electron microscopy Scanning electron microscopy self-lubricating coating self-lubricating coating Substrates Substrates Surface treatment Surface treatment Surface waves Surface waves terahertz imaging terahertz imaging Terahertz wave imaging Terahertz wave imaging Time-domain analysis Time-domain analysis total variation (TV) fusion total variation (TV) fusion
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| GB/T 7714 | Zhang, Zhenghao , Shi, Tingting , Huang, Yi et al. Defect Detection Method for Self-Lubricating Sliding Bearing Coating Using Terahertz Total Variation Image Fusion [J]. | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT , 2025 , 74 . |
| MLA | Zhang, Zhenghao et al. "Defect Detection Method for Self-Lubricating Sliding Bearing Coating Using Terahertz Total Variation Image Fusion" . | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT 74 (2025) . |
| APA | Zhang, Zhenghao , Shi, Tingting , Huang, Yi , Zhong, Shuncong , Zhuang, Caihong , Huang, Yonglin et al. Defect Detection Method for Self-Lubricating Sliding Bearing Coating Using Terahertz Total Variation Image Fusion . | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT , 2025 , 74 . |
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Bistable composite cylindrical structures have been developed over the last four decades, and show great potential for shape morphing applications, especially in aerospace. Their bistabilities are known to be induced by unsymmetric composite layups, while the governing factors on shape geometries and viscoelastic mechanics remain an enigma. Here, we investigated the intricate relationship between structural geometry and stable mechanics of a bistable unsymmetric composite cylindrical structure. A polylactic acid (PLA)-based carbon composite laminate was prepared through 3D printing, which released design freedom on structural fiber volume fraction that could be controlled by modulating hatch spacing between the composite yarns. This strategic adjustment allowed the regulation of grid density, hence the in-plane stress level, which dominates the bistable geometries. The cylindrical composite samples were produced with hatch spacing changed from 1.25 to 5 mm, corresponding to a fiber volume fraction ranged from 24.2% to 6.6%, where the structural curvature was also changed by up to 50% difference and gradually became viscoelastic dependent. It is found that the internal stress difference in thickness direction dominates the structural bistability, and there is a threshold value on the stress difference magnitude to essentially maintain the bistable configurations. These findings are expected to facilitate reversed structural design and manufacturing of the bistable cylindrical shells with tailorable stability, and promote their viscoelastic-based large shape morphing fatigue life predictions.Highlights Bistable composite cylindrical shells were produced with various grid density. A theoretical model was established to predict the time-dependent bistability. Stress difference in thickness direction dominates the structural curvature. Stress contour reveals the viscoelastic-dependent bistable mechanics.
Keyword ：
analytical modeling analytical modeling multifunctional composites multifunctional composites residual/internal stress residual/internal stress viscoelastic mechanics viscoelastic mechanics
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| GB/T 7714 | Wang, Bing , Ye, Junjie , Zhang, Shunnan et al. Viscoelastic mechanics of a bistable composite cylindrical structure [J]. | POLYMER COMPOSITES , 2025 . |
| MLA | Wang, Bing et al. "Viscoelastic mechanics of a bistable composite cylindrical structure" . | POLYMER COMPOSITES (2025) . |
| APA | Wang, Bing , Ye, Junjie , Zhang, Shunnan , Guan, Chenglong , Zhong, Jianfeng , Zhong, Shuncong . Viscoelastic mechanics of a bistable composite cylindrical structure . | POLYMER COMPOSITES , 2025 . |
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A bolt loosening detection method based on the summation coefficient of the absolute spectrum ratio technique is proposed to address the prevalent issue of bolt loosening in mechanical connections. This proposed method involves initially collecting vibration and rotation speed signals of the motor bolt connection structure, acquiring the baseline spectrum curve of a healthy structure and the spectrum curves of non-healthy structures under different degrees of bolt looseness through chirp Fourier transform (CFT). Subsequently, the spectrum ratio curves between healthy and non-healthy structures are calculated for different degrees of bolt loosening, and then the Summation Coefficient of Absolute Spectrum Ratio (SCASR) is defined to indicate the looseness. In the mathematical model, a linear relationship is observed between the SCASR and the frequency shift of the resonance peak. To standardize the results of bolt loosening detection, the SCASR could be divided by the number of points in the fixed frequency band to obtain the average of SCASR as the detection index for bolt loosening. Finally, a linear fitting equation is established between the bolt torque and the average of SCASR, so that the change in the average value can be used to determine whether the bolt is loose and evaluate the severity of bolt looseness. The detection performance of this proposed method has been effectively validated through both simulation and experiments. Experimental results indicate that the proposed method can effectively detect bolt loosening, particularly in its early stages, using low-frequency band data in three axes.
Keyword ：
chirp Fourier transform chirp Fourier transform detection index for bolt loosening degree detection index for bolt loosening degree early stage of bolt loosening early stage of bolt loosening reference spectrum curve reference spectrum curve Summation Coefficient of Absolute Spectrum Ratio Summation Coefficient of Absolute Spectrum Ratio
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| GB/T 7714 | Guo, Haoyang , Zhong, Jianfeng , Feng, Bin et al. Detection Method for Bolt Loosening Based on Summation Coefficient of Absolute Spectrum Ratio [J]. | SENSORS , 2025 , 25 (1) . |
| MLA | Guo, Haoyang et al. "Detection Method for Bolt Loosening Based on Summation Coefficient of Absolute Spectrum Ratio" . | SENSORS 25 . 1 (2025) . |
| APA | Guo, Haoyang , Zhong, Jianfeng , Feng, Bin , Chen, Yulong , Zhong, Shuncong . Detection Method for Bolt Loosening Based on Summation Coefficient of Absolute Spectrum Ratio . | SENSORS , 2025 , 25 (1) . |
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Metamaterials (MMs) have become increasingly prominent in terahertz flexible devices. However, bending deformation often alters the structure of the unit, which affects the response performance and stability of MMs. Here, a metal-aperture metamaterial (MA-MM) utilizing the strong coupling effect induced by two resonance modes is innovatively proposed to address the mentioned limitations. Specifically, it is found that the coupling state between multiple resonance modes remains consistent at different bending angles. Under these circumstances, the generated Rabi splitting peak presents stable response performance even under low resonance intensity caused by excessive deformation. The experimental results demonstrate that despite the amplitude of two resonant peaks decreasing significantly by 87.6%, the Q-factor of the Rabi splitting only reduced by 14.8%. Furthermore, armed with the response mode of the Rabi splitting being unaffected by plasma excitation range, the designed MA-MMs are able to maintain constant Q-factors and frequencies on curved surfaces of varying sizes. These findings exhibit the characteristics of electromagnetic response for multi-mode resonance-coupled MAMMs on different curved surfaces, presenting a novel design approach for terahertz flexible functional devices. (c) 2024 Chinese Laser Press
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| GB/T 7714 | Zeng, Qiuming , Shi, Tingting , Huang, Yi et al. Freestanding metamaterial with constant coupling response for terahertz flexible functional devices [J]. | PHOTONICS RESEARCH , 2025 , 13 (1) . |
| MLA | Zeng, Qiuming et al. "Freestanding metamaterial with constant coupling response for terahertz flexible functional devices" . | PHOTONICS RESEARCH 13 . 1 (2025) . |
| APA | Zeng, Qiuming , Shi, Tingting , Huang, Yi , Zhong, Shuncong , Sun, Fuwei , Guan, Chenglong et al. Freestanding metamaterial with constant coupling response for terahertz flexible functional devices . | PHOTONICS RESEARCH , 2025 , 13 (1) . |
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This study investigated the static coupling characteristics of a column-type six-component force/moment transducer. An output model of the transducer was developed and validated through finite element method (FEM) simulations. Length-to-diameter ratio (RLD), deflection angles of strain gauge, and multi-component loads were analysed in relation to transducer coupling. Six transducers with different RLDs and strain gauge deflection angles were tested under single and multi-component loads. It was found that the coupling of Fz under Fx or Fy was pronounced when RLD was small. The coupling of Fz under Fx increased from less than 5 % to 34 % when RLD decreased from 3.5 to 2.0. However, couplings of other components under Fz were not sensitive to RLD. The strain gauge deflection angles had the largest effect on the coupling of the Fz component, its coupling increased from 2.5 % to over 17.5% under Mx as the deflection angle increased from 0 degrees to 6 degrees. However, couplings of other components caused by Fz were not sensitive to strain gauge deflection angle. The couplings under multicomponent loads were found to approximate the superposition of those under single-component loads, with deviations within 2 %, indicating good linearity and easy decoupling of the transducer.
Keyword ：
Column-type Column-type Coupling characteristics Coupling characteristics Force measurement Force measurement Six-component Six-component
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| GB/T 7714 | Liang, Wei , Xu, Zhenting , Xie, Zhijie et al. Coupling characteristic of column-type six-component force/ moment transducers [J]. | MEASUREMENT , 2025 , 242 . |
| MLA | Liang, Wei et al. "Coupling characteristic of column-type six-component force/ moment transducers" . | MEASUREMENT 242 (2025) . |
| APA | Liang, Wei , Xu, Zhenting , Xie, Zhijie , Hong, Xiaodong , Zhong, Jianfeng , Zhong, Shuncong et al. Coupling characteristic of column-type six-component force/ moment transducers . | MEASUREMENT , 2025 , 242 . |
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