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学者姓名：张俊
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Abstract ：
Aero-engines, pumps, and trains are widely used in transportation, maritime, aerospace, and other industries. However, these devices often operate in harsh and complex environments, making their internal components prone to failure. Thus, constructing a highly accurate fault diagnosis model is essential for ensuring the safe and reliable operation of machinery. However, most existing models require many labeled samples to build accurate training models, which is both expensive and difficult to achieve. Moreover, some models lack adaptability and often require adjustments to their structure or hyperparameters to suit new diagnostic tasks. To address these challenges, this paper proposes a few-shot fault diagnosis model based on multi-scale perception multi-level feature fusion image quadrant entropy (MPMFFIQE). The MPMFFIQE method uses the gramian angle summation field (GASF) to convert transient signals into images, preserving more detailed information about the mechanical state. The multi-scale perception multi-level feature strategy is then applied to sequentially enlarge and reconstruct feature maps at various levels, maximizing the extraction of fault-related information. Afterward, the fusion image quadrant entropy technique is proposed to combine nonlinear dynamic features from these feature maps, forming the mechanical MPMFFIQE feature set. Finally, this set is input into the harris hawks optimization support vector machine (HHOSVM) classifier to achieve fault identification. Results from three real-world case studies demonstrate that the proposed MPMFFIQE method improves accuracy by up to 12.90% in comparison with six feature extraction techniques. Furthermore, the proposed model achieves an accuracy rate exceeding 98.10% with just five training samples per state, representing up to a 27.48% improvement over six existing models. These findings confirm that the developed model can effectively and accurately diagnose mechanical faults in industrial applications using only a small number of training samples. Additionally, the model shows strong generalization across different mechanical equipment, highlighting its significant practical value. © 2024 Elsevier Ltd
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| GB/T 7714 | Wang, Zhenya , Liang, Pan , Bai, Rengui et al. Few-shot fault diagnosis for machinery using multi-scale perception multi-level feature fusion image quadrant entropy [J]. | Advanced Engineering Informatics , 2025 , 63 . |
| MLA | Wang, Zhenya et al. "Few-shot fault diagnosis for machinery using multi-scale perception multi-level feature fusion image quadrant entropy" . | Advanced Engineering Informatics 63 (2025) . |
| APA | Wang, Zhenya , Liang, Pan , Bai, Rengui , Liu, Yaming , Zhao, Jingshan , Yao, Ligang et al. Few-shot fault diagnosis for machinery using multi-scale perception multi-level feature fusion image quadrant entropy . | Advanced Engineering Informatics , 2025 , 63 . |
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Screw theory serves as an influential mathematical tool, significantly contributing to mechanical engineering, with particular relevance to mechanism science and robotics. The instantaneous screw and the finite displacement screw have been used to analyse the degree of freedom and perform kinematic analysis of linkage mechanisms with only lower pairs. However, they are not suitable for higher pair mechanisms, which can achieve complex motions with a more concise structure by reasonably designing contact contours, and they possess advantages in some particular areas. Therefore, to improve the adaptability of screw theory, this paper aims to analyse higher kinematic pair (HKP) mechanisms and proposes a method to extend instantaneous screw and finite displacement screw theory. This method can not only analyse the instantaneous degree of freedom of HKP mechanisms but also determine the relationships between the motion variables of HKP mechanisms. Furthermore, this method is applied to calculate the degree of freedom and the relationships between the motion angles in both planar and spatial cam mechanisms, thereby demonstrating its efficiency and advantages.
Keyword ：
degree of freedom degree of freedom finite screw theory finite screw theory higher kinematic pair mechanisms higher kinematic pair mechanisms kinematics kinematics screw theory screw theory
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| GB/T 7714 | Guo, Ruyi , Wang, Jiangyan , Hu, Houhua et al. Extending screw theory for analysing mechanisms incorporating higher kinematic pairs [J]. | ROBOTICA , 2025 . |
| MLA | Guo, Ruyi et al. "Extending screw theory for analysing mechanisms incorporating higher kinematic pairs" . | ROBOTICA (2025) . |
| APA | Guo, Ruyi , Wang, Jiangyan , Hu, Houhua , Zhang, Jun , Yang, Fufu . Extending screw theory for analysing mechanisms incorporating higher kinematic pairs . | ROBOTICA , 2025 . |
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This paper presents a quantitative analysis comparing the elastodynamic performance of a redundantly actuated parallel manipulator to its non-redundantly actuated counterpart. A unified elastodynamic model is established to encompasses both actuation types, facilitating a comprehensive analysis of their performance characteristics. To assess the impact of redundant actuation, frequency variation indices are defined to measure the influence of the redundantly actuated limbs on the overall system dynamics. Two global sensitivity indices are introduced to quantify how variations in design variables affect elastodynamic performance. An adaptive Kriging-based algorithm is developed to predict elastodynamic behavior, and it is numerically validated for both accuracy and efficiency. Through a detailed elastodynamic comparison and sensitivity analysis, we identify the key effects of redundant actuation and pinpoint the most significant design variables. Our findings reveal that the enhancements in low-order natural frequencies due to redundant actuation are configuration- and order-dependent. The redundantly actuated parallel manipulator demonstrates heightened sensitivity to geometric variables in terms of elastodynamic performance, surpassing that of its non-redundantly actuated variant. The sensitivity analysis provides valuable insights, guiding future improvements in elastodynamic performance. Notably, the thickness of the moving platform emerges as a critical parameter that warrants optimization during the design phase. Therefore, this analysis is particularly pivotal in the initial evaluation stages of parallel manipulators, ensuring that designs are refined for enhanced dynamic responses. With necessary modifications, this work can be applied to other redundantly actuated parallel manipulators to contribute a deeper understanding of how redundancy influences their dynamic characteristics.
Keyword ：
Adaptive Kriging Adaptive Kriging Elastodynamic Elastodynamic Parallel manipulator Parallel manipulator Redundant actuation Redundant actuation Sensitivity analysis Sensitivity analysis
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| GB/T 7714 | Tang, Tengfei , Fang, Hanliang , Yang, Fufu et al. Adaptive Kriging elastodynamic modelling and analysis for a redundantly actuated parallel manipulator [J]. | APPLIED MATHEMATICAL MODELLING , 2025 , 142 . |
| MLA | Tang, Tengfei et al. "Adaptive Kriging elastodynamic modelling and analysis for a redundantly actuated parallel manipulator" . | APPLIED MATHEMATICAL MODELLING 142 (2025) . |
| APA | Tang, Tengfei , Fang, Hanliang , Yang, Fufu , Zhang, Jun . Adaptive Kriging elastodynamic modelling and analysis for a redundantly actuated parallel manipulator . | APPLIED MATHEMATICAL MODELLING , 2025 , 142 . |
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To enhance the generalization capability of rotating machinery fault diagnosis, a novel generalized fault diagnosis framework is proposed. Phase entropy is introduced as a new method for measuring mechanical signal complexity. Furthermore, it is extended to refined time-shift multi-scale phase entropy. The extended method effectively captures dynamic characteristic information across multiple scales, providing a comprehensive reflection of the equipment's state. Based on signal amplitude, multiple time-shift multi-scale decomposition subsignals are constructed, and a scatter diagram is generated for each sub-signal. Subsequently, the diagram is partitioned into several regions, and the distribution probability of each region is calculated, enabling the extraction of stable and easily distinguishable features through the refined operation. Next, the one-versus-onebased twin support vector machine classifier is employed to achieve high-accuracy fault identification. Case analyses of a wind turbine, an aero-engine, a train transmission system, and an aero-bearing demonstrate that the accuracy, precision, recall, and F1 score of the proposed framework are over 99.51 %, 99.52 %, 99.51 %, and 99.51 %, respectively, using only five training samples per state. The proposed framework achieves higher accuracy compared to nine existing models via deep learning or machine learning. The aforementioned analysis results validate the accuracy and generalizability of the proposed framework.
Keyword ：
Fault diagnosis Fault diagnosis Phase entropy Phase entropy Rotating machinery Rotating machinery Twin support vector machine Twin support vector machine
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| GB/T 7714 | Wang, Zhenya , Zhang, Meng , Chen, Hui et al. A generalized fault diagnosis framework for rotating machinery based on phase entropy [J]. | RELIABILITY ENGINEERING & SYSTEM SAFETY , 2025 , 256 . |
| MLA | Wang, Zhenya et al. "A generalized fault diagnosis framework for rotating machinery based on phase entropy" . | RELIABILITY ENGINEERING & SYSTEM SAFETY 256 (2025) . |
| APA | Wang, Zhenya , Zhang, Meng , Chen, Hui , Li, Jinghu , Li, Gaosong , Zhao, Jingshan et al. A generalized fault diagnosis framework for rotating machinery based on phase entropy . | RELIABILITY ENGINEERING & SYSTEM SAFETY , 2025 , 256 . |
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Deployable structures based on rigid mechanisms are unconventional structures that can achieve transformations from compact folded states to fully deployed surfaces. The mechanisms are of very low or even single mobility, making the deployment process simpler. Such structures have found significant applications across various fields such as architecture, aerospace engineering, and robotics. Currently, the constituent mechanisms of these structures often come with symmetric geometric conditions, thereby yielding symmetric contours. However, this symmetry requirement makes it less desirable for specific scenarios where more generalised shapes are required. To fill the gap, this paper introduces two novel asymmetric deployable structures whose outlines can be arbitrary triangles based on the Wohlhart 6R linkage. The first structure is made from rod links, capable of transforming between two plane-like states. The second one is a modified version that incorporates rigid panels of uniform thickness as links, which can be folded from a long triangular prism to a shorter one. Their kinematic behaviours are analyzed in detail and validated by physical prototypes. We have also identified viable approaches to tessellating both structures into networks for large-scale applications. This work lays a crucial step towards the construction of asymmetric deployable structures with generalised contours. © 2025 Elsevier Ltd
Keyword ：
Aerospace applications Aerospace applications Aircraft Aircraft Aviation Aviation Kinematics Kinematics Robot applications Robot applications Spacecraft Spacecraft
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| GB/T 7714 | Zhou, Runjin , Yang, Yuchen , Liu, Chenying et al. Wohlhart 6R linkage-based asymmetric deployable structures with generalised contours [J]. | International Journal of Solids and Structures , 2025 , 317 . |
| MLA | Zhou, Runjin et al. "Wohlhart 6R linkage-based asymmetric deployable structures with generalised contours" . | International Journal of Solids and Structures 317 (2025) . |
| APA | Zhou, Runjin , Yang, Yuchen , Liu, Chenying , Guo, Ruyi , Hu, Houhua , Zhang, Jun et al. Wohlhart 6R linkage-based asymmetric deployable structures with generalised contours . | International Journal of Solids and Structures , 2025 , 317 . |
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Redundantly actuated parallel manipulator (RAPM) has been proved to have comparative advantages of higher rigidity and higher payload over other parallel manipulators. This paper is to establish a sufficient accurate stiffness modelling to evaluate the stiffness of the 2UPR-2RPS RAPM. Firstly, the structure of the 2UPR-2RPS RAPM is briefly introduced, followed by some necessary kinematic definitions. Next, a stiffness modelling of 2UPR-2RPS is established by including the compliances of all joints and limb structures. And a reasonable index is constructed to evaluate the stiffness of the 2UPR-2RPS RAPM. Finally, a set of stiffness experiments is carried out to verify the effectiveness of the proposed stiffness modelling of the 2UPR-2RPS. The results indicate that the relative errors between the proposed stiffness modelling and the experimental value are less than 6%. This indicates that the proposed stiffness modelling possesses sufficient accuracy and thus can be used to analyze the stiffness of the 2UPR-SRPS RAPM. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
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| GB/T 7714 | He, Zhen , Chen, Wenlong , Li, Yulu et al. Stiffness Modelling and Analysis of a Redundantly Actuated Parallel Manipulator [C] . 2025 : 715-729 . |
| MLA | He, Zhen et al. "Stiffness Modelling and Analysis of a Redundantly Actuated Parallel Manipulator" . (2025) : 715-729 . |
| APA | He, Zhen , Chen, Wenlong , Li, Yulu , Tang, Tengfei , Fang, Hanliang , Yang, Fufu et al. Stiffness Modelling and Analysis of a Redundantly Actuated Parallel Manipulator . (2025) : 715-729 . |
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Due to the merits of high flexibility, great pulling force, and light weight, the pneumatic muscle (PM) is applied to realize the flexible driving control commonly. However, the inherent asymmetric hysteresis nonlinear characteristics affect its control accuracy seriously and tradition generalized Bouc-Wen (GBW) model and its variants cannot characterize the hysteresis of PM effectively. A novel improved generalized Bouc-Wen (IGBW) model is proposed based on the concave convex features of the PM hysteresis curve. The parameter identification effects of Levenberg-Marquardt algorithm (LM), gradient descent method, Newton iteration method, differential evolution algorithm (DE), particle swarm optimization algorithm (PSO), and genetic algorithm (GA) on the IGBW model are studied firstly. Then, the modeling capacity of IGBW model is checked by contrasting the modeling accuracy and identification efficiency of IGBW and modified symmetrical generalized Prandtl-Ishlinskii (MSGPI) models. Finally, the hysteresis compensation control strategy is designed based on the inverse model of IGBW, and its stability is analyzed. The experimental results manifest that the LM algorithm is much better than the other five estimation methods with regard to computational efficiency and identification accuracy. The IGBW model can illustrate the asymmetric hysteresis properties of PM with higher accuracy and efficiency, and the control behavior is ameliorated significantly after using the IGBW model.
Keyword ：
Hysteresis characteristic Hysteresis characteristic Hysteresis compensation Hysteresis compensation improved generalized Bouc-Wen (IGBW) model improved generalized Bouc-Wen (IGBW) model Parameter identification Parameter identification pneumatic muscle (PM) pneumatic muscle (PM)
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| GB/T 7714 | Xie, Shenglong , Zhong, Haiming , Zhang, Jun et al. Modeling, identification, and compensation control of pneumatic muscle hysteresis based on an improved generalized Bouc-Wen model [J]. | MEASUREMENT , 2025 , 253 . |
| MLA | Xie, Shenglong et al. "Modeling, identification, and compensation control of pneumatic muscle hysteresis based on an improved generalized Bouc-Wen model" . | MEASUREMENT 253 (2025) . |
| APA | Xie, Shenglong , Zhong, Haiming , Zhang, Jun , Li, Yuntang , Xu, Su'an . Modeling, identification, and compensation control of pneumatic muscle hysteresis based on an improved generalized Bouc-Wen model . | MEASUREMENT , 2025 , 253 . |
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A 2PRU&1PRS - XY hybrid robot was proposed for the design requirements of robotie machining equipment for complex structural components. In order to apply the new hybrid robot to high-performance 5-axis machining, it is necessary to realize the dimensional design that takes into account the balanced optimization of multi kinematics performance. Therefore, in addition to analyzing the working space, motion/force transmission and dexterity indicators of hybrid robot, the difference index of transfer stability and accuracy was also proposed, and a scale design method based on the idea of multi-objective equilibrium optimization was designed. This method adopted standardized method to simplify the multiparameter design space, applied response surface methodology to improve the efficiency of solving complex functional functions, and the optimization solution efficiency was improved by the principal component analysis method. Combined with subjective and objective combinatorial empowerment method and TOPSIS-based Pareto frontier method, multi-index comprehensive performance scoring was carried out. Using the proposed method, four dimensional parameter design schemes were obtained that balanced optimization efficiency and multi-objective equilibrium optimization. The optimization design of the main dimensional parameters of the hybrid robot was achieved, providing designers with multi-objective equilibrium decision-making references with different engineering design preferences. © 2024 Chinese Society of Agricultural Machinery. All rights reserved.
Keyword ：
Decision making Decision making Efficiency Efficiency Industrial robots Industrial robots Kinematics Kinematics Machine design Machine design Multiobjective optimization Multiobjective optimization Principal component analysis Principal component analysis
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| GB/T 7714 | Tang, Tengfei , Shen, Yifeng , Ye, Wei et al. Dimensional Design of 2PRU&1PRS-XY Hybrid Robot Based on Multi-objective Equilibrium Optimization [J]. | Transactions of the Chinese Society for Agricultural Machinery , 2024 , 55 (4) : 440-451 . |
| MLA | Tang, Tengfei et al. "Dimensional Design of 2PRU&1PRS-XY Hybrid Robot Based on Multi-objective Equilibrium Optimization" . | Transactions of the Chinese Society for Agricultural Machinery 55 . 4 (2024) : 440-451 . |
| APA | Tang, Tengfei , Shen, Yifeng , Ye, Wei , Zhang, Jun . Dimensional Design of 2PRU&1PRS-XY Hybrid Robot Based on Multi-objective Equilibrium Optimization . | Transactions of the Chinese Society for Agricultural Machinery , 2024 , 55 (4) , 440-451 . |
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The accuracy of five-axis hybrid machining equipment is one of the key indicators for evaluating its performance, and error modeling is a prerequisite for achieving accuracy synthesis and kinematic calibration. However, the current error modeling methods mainly focus on the parallel spindle head, while neglecting error sources arising from the series modules. Using such an incomplete error model for accuracy synthesis and kinematic calibration can result in suboptimal accuracy performance of the entire machine. This study focuses on a 2UPR&2RPS-XY type five-axis hybrid machine tool, considers the error influence of the serial sliding gantry module, and proposes a comprehensive error modeling method. Firstly, the error models for the fixed base-tool (2UPR&2RPS parallel spindle head) and fixed base-workpiece (X–Y sliding gantry module) are established using screw theory. Secondly, based on the structural characteristics of the machine tool, an integrated error model is developed. Next, 360 trajectory points are selected from a circular path and substituted into the established error model to obtain the roundness error of the five-axis hybrid machine tool under this trajectory. Finally, experimental validation of the proposed integrated error modeling method is conducted using a double ball bar. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
Keyword ：
Calibration Calibration Errors Errors Kinematics Kinematics Machine tools Machine tools
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| GB/T 7714 | Wu, Chengyang , He, Zhen , Sun, Zaichao et al. Integrated Error Modeling and Experimental Verification of 2UPR&2RPS-XY Type Five-Axis Hybrid Machine Tool [C] . 2024 : 2251-2262 . |
| MLA | Wu, Chengyang et al. "Integrated Error Modeling and Experimental Verification of 2UPR&2RPS-XY Type Five-Axis Hybrid Machine Tool" . (2024) : 2251-2262 . |
| APA | Wu, Chengyang , He, Zhen , Sun, Zaichao , Wang, Kailong , Zhang, Jun . Integrated Error Modeling and Experimental Verification of 2UPR&2RPS-XY Type Five-Axis Hybrid Machine Tool . (2024) : 2251-2262 . |
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The sun gear in a planetary gearbox is prone to generate tooth crack due to its much more severe load conditions than other gears. The cracked sun gear will evolve into distinct tooth breakages and thus may deteriorate the operation status and even cause catastrophic loss of the whole transmission system. To avoid tooth crack induced malfunction of the planetary gearbox, the tooth crack of sun gear should be accurately identified during the early stage. Therefore, a novelty quantitative assessment methodology for tooth crack damage is proposed, which is a mathematical model for crack propagation of the sun gear in planetary gearboxes based on vibration acceleration signal. Firstly, the quantitative relationship between the crack propagation parameters along the gear thickness and width directions and the time-varying mesh stiffness is analytically formulated. The analytical time-varying mesh stiffness formulation is incorporated into a translational-torsional dynamic model to reveal the effects of crack propagation on the vibration signal of internal and external meshing pairs in the planetary gearbox. Secondly, a quantitative mapping function is established by taking the cracked section area as the variable and the residual of the summed envelope spectrum amplitude of the vibration acceleration signal as the assessment index. Finally, a numerical simulation as well as an experimental test is conducted and compared to verify the correctness of the proposed assessment methodology. We believe that the established model and the corresponding index provide a physically intuitive yet mathematically quantitative reference for diagnosing tooth crack in planetary gearboxes.
Keyword ：
fault diagnosis fault diagnosis planetary gearbox planetary gearbox quantitative assessment quantitative assessment tooth crack tooth crack vibration signal vibration signal
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| GB/T 7714 | Wang, Jian , Liu, Xianzeng , Zhang, Jun . Quantitative assessment for tooth crack of the sun gear in a planetary gearbox [J]. | MEASUREMENT SCIENCE AND TECHNOLOGY , 2024 , 35 (2) . |
| MLA | Wang, Jian et al. "Quantitative assessment for tooth crack of the sun gear in a planetary gearbox" . | MEASUREMENT SCIENCE AND TECHNOLOGY 35 . 2 (2024) . |
| APA | Wang, Jian , Liu, Xianzeng , Zhang, Jun . Quantitative assessment for tooth crack of the sun gear in a planetary gearbox . | MEASUREMENT SCIENCE AND TECHNOLOGY , 2024 , 35 (2) . |
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