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学者姓名：张俊
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Abstract ：
To meet the high-precision positioning requirements for hybrid machining units, this article presents a geomet-ric error modeling and source error identification methodology for a serial-parallel hybrid kinematic machiningunit (HKMU) with five axis. A minimal kinematic error modeling of the serial-parallel HKMU is established withscrew-based method after elimination of redundant errors. A set of composite error indices is formulated to describethe terminal accuracy distribution characteristics in a quantitative manner. A modified projection method is pro-posed to determine the actual compensable and noncompensable source errors of the HKMU by identifying suchtransformable source errors. Based on this, the error compensation and comparison analysis are carried out on theexemplary HKMU to numerically verify the effectiveness of the proposed modified projection method. The geo-metric error evaluations reveal that the parallel module has a larger impacts on the terminal accuracy of the platformof the HKMU than the serial module. The error compensation results manifest that the modified projection methodcan find additional compensable source errors and significantly reduce the average and maximum values of geomet-ric errors of the HKMU. Hence, the proposed methodology can be applied to improve the accuracy of kinematiccalibration of the compensable source errors and can reduce the difficulty and workload of tolerance design fornoncompensable source errors of such serial-parallel hybrid mechanism.
Keyword ：
error compensation error compensation error identification error identification error modeling error modeling geometric error geometric error hybrid kinematic machining unit hybrid kinematic machining unit source errors source errors
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| GB/T 7714 | Shen, Yifeng , Tang, Tengfei , Ye, Wei et al. Geometric error modeling and source error identification methodology for a serial-parallel hybrid kinematic machining unit with five axis [J]. | ROBOTICA , 2024 . |
| MLA | Shen, Yifeng et al. "Geometric error modeling and source error identification methodology for a serial-parallel hybrid kinematic machining unit with five axis" . | ROBOTICA (2024) . |
| APA | Shen, Yifeng , Tang, Tengfei , Ye, Wei , Zhang, Jun . Geometric error modeling and source error identification methodology for a serial-parallel hybrid kinematic machining unit with five axis . | ROBOTICA , 2024 . |
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面向复杂结构件机器人加工装备设计需求，提出一种2PRU&1PRS-XY型混联机器人。为将该混联机器人应用于高性能机械加工任务，在其工作空间、运动/力传递性以及灵巧度分析的基础上，定义了用于工作全域性能评价的传递稳定性指标与精度差异性指标，提出了一种基于多目标均衡优化思想的尺度设计方法。该方法采用标准化方法简化多参数设计空间，应用响应面法与主成分分析法提高优化求解效率，结合主客观组合赋权法与基于TOPSIS的Pareto前沿法实现多指标综合性能评分。运用所提方法，得到了4种兼顾优化求解效率和多目标均衡优化的尺度参数设计方案，实现了2PRU&1PRS-XY型混联机器人主要尺度参数的优化设计，为设计者提供了具有不同工程设计倾向的多目标均衡决策参考。
Keyword ：
多目标优化 多目标优化 尺度设计 尺度设计 混联机器人 混联机器人 运动学性能 运动学性能
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| GB/T 7714 | 汤腾飞 , 沈漪枫 , 叶伟 et al. 基于多目标均衡优化的2PRU&1PRS-XY型混联机器人尺度设计方法 [J]. | 农业机械学报 , 2024 , 55 (04) : 440-451 . |
| MLA | 汤腾飞 et al. "基于多目标均衡优化的2PRU&1PRS-XY型混联机器人尺度设计方法" . | 农业机械学报 55 . 04 (2024) : 440-451 . |
| APA | 汤腾飞 , 沈漪枫 , 叶伟 , 张俊 . 基于多目标均衡优化的2PRU&1PRS-XY型混联机器人尺度设计方法 . | 农业机械学报 , 2024 , 55 (04) , 440-451 . |
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Compared to fixed-bottom wind turbines, offshore floating wind turbines (OFWTs) are subject to more prominent forced vibrations that require control measures. Considering the limited space within the nacelle, this paper proposed a novel methodology for designing a tuned mass dampers (TMD) installed inside the tower. To achieve an optimal design, a 4-degree-of-freedom simplify dynamic model is established to predict the vibration characteristics of spar OFWTs quickly and accurately. A new TMD configuration installed inside the tower is proposed to reduce the effect of space limitation and to determine the stroke limitation Based on the proposed methodology, the stiffness and damping of the TMD are designed and optimized, and then the detailed structural parameters are calculated. The comparison results show that, the proposed TMD achieves a maximum peak suppression rate of 90.67% in tower top fore-aft deformation power spectral density, which is 19.92% higher than that of the TMD designed by the formula method. The proposed TMD can effectively address the problem caused by the space limitation within nacelle, and provide superior vibration suppression for spar OFWTs. © 2024 Elsevier Ltd
Keyword ：
Acoustic devices Acoustic devices Dynamic models Dynamic models Offshore oil well production Offshore oil well production Offshore wind turbines Offshore wind turbines Spectral density Spectral density Towers Towers Vibration control Vibration control
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| GB/T 7714 | Lin, Jiahuan , Wang, Yangwei , Zhang, Guanchen et al. Novel tuned mass dampers installed inside tower of spar offshore floating wind turbines [J]. | Ocean Engineering , 2024 , 301 . |
| MLA | Lin, Jiahuan et al. "Novel tuned mass dampers installed inside tower of spar offshore floating wind turbines" . | Ocean Engineering 301 (2024) . |
| APA | Lin, Jiahuan , Wang, Yangwei , Zhang, Guanchen , Liu, Yuanchang , Zhang, Jun . Novel tuned mass dampers installed inside tower of spar offshore floating wind turbines . | Ocean Engineering , 2024 , 301 . |
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并联操作器作为串-并联式混联加工装备的核心模块，其驱动特性对系统性能至关重要。以Z4型冗余驱动并联操作器为研究对象，提出一类驱动特性评价指标，并基于该类指标对其进行任务空间优选和伺服扭矩参数预估。首先，采用封闭矢量法求解操作器的运动学逆解，并构建无量纲雅可比矩阵以评估其运动学各向同性。其次，运用Lagrange法建立操作器的刚体动力学模型，并基于最小二范数法进行驱动力分配。接着，选取末端刀尖点为参考点，定义加速度、速度和动态切削力的驱动各向同性指标和驱动扭矩指标。最后，基于所提指标，搜索综合性能良好的任务空间，确定伺服扭矩参数，并通过实验验证所选电机满足使用要求。
Keyword ：
动力学建模 动力学建模 各向同性 各向同性 并联操作器 并联操作器 驱动扭矩 驱动扭矩
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| GB/T 7714 | 张俊 , 吴成阳 , 方汉良 et al. Z4型冗余驱动并联操作器的驱动特性研究 [J]. | 机械工程学报 , 2024 , 60 (07) : 66-78 . |
| MLA | 张俊 et al. "Z4型冗余驱动并联操作器的驱动特性研究" . | 机械工程学报 60 . 07 (2024) : 66-78 . |
| APA | 张俊 , 吴成阳 , 方汉良 , 孙载超 , 王凯龙 , 汤腾飞 . Z4型冗余驱动并联操作器的驱动特性研究 . | 机械工程学报 , 2024 , 60 (07) , 66-78 . |
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To reduce the levelized cost of energy (LCOE) for offshore wind turbines, a novel wind–wave energy converter (WWEC) with a mass-adjustable buoy is designed. To analyze the impact of buoy mass variations on the system, a coupled comprehensive numerical model is established to simulate the aerodynamics of the turbine and the hydrodynamics of the platform and buoy. It is found that the occurrence of the buoy out of water significantly reduces the output power. Adjusting the buoy’s mass with suitable strategy can prevent the impact of slamming loads and improve the power output. The mass adjustment strategy is determined based on the output power of the wave energy converter under regular wave conditions. It is found that the mass adjustment strategy can significantly enhance the output power of combined system. The buoy does not move out of the water under the extreme conditions, which avoids the impact of slamming loads on system stability. Moreover, mass-adjustable buoys can reduce the risk of mooring line failure compare to a wind turbine without a buoy. © 2024 by the authors.
Keyword ：
conceptual design conceptual design mass-adjustable buoy mass-adjustable buoy power optimization power optimization wind–wave energy converter wind–wave energy converter
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| GB/T 7714 | Shi, Y. , Lin, J. , Zhuge, Z. et al. Conceptual Design and Dynamic Analysis of a Wind–Wave Energy Converter with a Mass-Adjustable Buoy [J]. | Journal of Marine Science and Engineering , 2024 , 12 (8) . |
| MLA | Shi, Y. et al. "Conceptual Design and Dynamic Analysis of a Wind–Wave Energy Converter with a Mass-Adjustable Buoy" . | Journal of Marine Science and Engineering 12 . 8 (2024) . |
| APA | Shi, Y. , Lin, J. , Zhuge, Z. , Zheng, R. , Zhang, J. . Conceptual Design and Dynamic Analysis of a Wind–Wave Energy Converter with a Mass-Adjustable Buoy . | Journal of Marine Science and Engineering , 2024 , 12 (8) . |
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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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A thermal elastohydrodynamic lubrication model is combined with a wear model under mixed lubrication to investigate the lubrication performance and wear characteristics of double-circular-arc spiral bevel gears for nutation drive. Moreover, the effects of operating conditions on the characteristic parameters of the film are analysed under the mixed lubrication point-contact conditions. Furthermore, the characteristics of gears in terms of friction coefficient and wear depth are discussed. According to the results, the performance of lubrication and wear during the mutual meshing of the convex tooth surface of the external bevel gear and the concave tooth surface of the inner bevel gear is better than that during the mutual meshing of the other pair of tooth surfaces. The minimum film thickness of the whole meshing process occurs near the inner of the bevel gear due to the joint action of the load and the end edge effect. Moreover, an increase in torque at a certain rotational speed is favourable to the lubrication performance of the meshing process. The wear depth in the double-circular-arc spiral bevel gears' meshing process is heavily influenced by the roughness of the tooth surface. © 2024 John Wiley & Sons Ltd.
Keyword ：
EHL EHL lubrication performance lubrication performance mixed lubrication mixed lubrication nutation double-circular-arc spiral bevel gears nutation double-circular-arc spiral bevel gears wear mechanism wear mechanism
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| GB/T 7714 | Lin, B. , Pan, L. , Tang, J. et al. Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication [J]. | Lubrication Science , 2024 , 37 (3) : 222-236 . |
| MLA | Lin, B. et al. "Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication" . | Lubrication Science 37 . 3 (2024) : 222-236 . |
| APA | Lin, B. , Pan, L. , Tang, J. , Tan, S. , Zhang, J. . Lubrication Performance and Wear Mechanism of Double-Circular-Arc Spiral Bevel Gears for Nutation Drive in Mixed Lubrication . | Lubrication Science , 2024 , 37 (3) , 222-236 . |
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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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In marine applications, the scaled wind turbine model (SWTM) based aerodynamic testing apparatus is regarded as one of the most effective approaches to predict the aerodynamic performance of offshore floating wind turbines (OFWTs). To fully disclose the aerodynamics of OFWTs, such kind of apparatus should meet two design requirements: (1) accurate representation of the aerodynamic characteristics of reference wind turbines and (2) reasonable reproduction of the environmental factors from real-world wind-wave-coupled field. Baring with these considerations, the authors propose a cost-effective SWTM-based aerodynamic testing apparatus, which consists of an innovative SWTM, a wind-wave simulator (WWS) and a data acquisition and analyses system. The proposed SWTM is featured by a double-deck tower, which satisfies the requirements of similarity in geometry, stiffness and mass, and a set of redesigned blades. The proposed WWS is capable of simulating both the time-varying inflow wind and the wave-induced platform motions through a wind field generator and a motion simulator. Based on the developed apparatus, a series of aerodynamic tests are conducted to validate the effectiveness of the apparatus design. In addition, the coupling effects of inflow wind and platform motions on the aerodynamics of OFWT are further revealed through experimental tests.
Keyword ：
aerodynamic tests aerodynamic tests double-deck tower double-deck tower redesigned blade redesigned blade Scaled wind turbine model Scaled wind turbine model wind-wave simulator wind-wave simulator
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| GB/T 7714 | Lin, Jiahuan , Wang, Yangwei , Duan, Huawei et al. A scaled wind turbine model-based aerodynamic testing apparatus for offshore floating wind turbines [J]. | JOURNAL OF MARINE ENGINEERING AND TECHNOLOGY , 2023 , 22 (6) : 263-272 . |
| MLA | Lin, Jiahuan et al. "A scaled wind turbine model-based aerodynamic testing apparatus for offshore floating wind turbines" . | JOURNAL OF MARINE ENGINEERING AND TECHNOLOGY 22 . 6 (2023) : 263-272 . |
| APA | Lin, Jiahuan , Wang, Yangwei , Duan, Huawei , Liu, Yuanchang , Zhang, Jun . A scaled wind turbine model-based aerodynamic testing apparatus for offshore floating wind turbines . | JOURNAL OF MARINE ENGINEERING AND TECHNOLOGY , 2023 , 22 (6) , 263-272 . |
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