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学者姓名：刘志峰
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摘要 ：
Mobile manipulators have been widely used in modern industrial fields due to their advantages of large operating workspace and high motion dexterity. For the application, the path planning has been a core foundation for its motion control. However, as the environmental complexity and performance requirements increase, existing methods are limited by low execution efficiency, and lack of comprehensive consideration of motion performances. A motion planning technique is proposed for mobile manipulators with continuous trajectory task. In this technique, a hierarchical constraints dimension reduction (HCDR) strategy is presented based on the task decomposition and performance requirements analysis of each stage. HCDR strategy aims to improve the execution efficiency of the algorithm through local operations of performance constraints and the local simplification of the distance calculation at different stages of the task. Models of inverse kinematics and performance indexes are established to provide basis for constraint conditions, including distance models with different accuracy, manipulability index model and trajectory tracing error model. Two optimization strategies are presented to solve the motion planning problem considering the overall performance of the system. And simulation results show that the three-level strategy has the higher convergence efficiency than the bi-level strategy, as well as can guarantee the motion performance of the system.
关键词 ：
Mobile manipulators Mobile manipulators motion planning motion planning hierarchical constraints dimension reduction (HCDR) hierarchical constraints dimension reduction (HCDR) performance indexes performance indexes continuous trajectory task continuous trajectory task
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| GB/T 7714 | Xu, Jingjing , Tao, Long , Pei, Yanhu et al. HCDR-based motion planning for mobile manipulators with the continuous trajectory task [J]. | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE , 2024 , 238 (12) : 5813-5832 . |
| MLA | Xu, Jingjing et al. "HCDR-based motion planning for mobile manipulators with the continuous trajectory task" . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE 238 . 12 (2024) : 5813-5832 . |
| APA | Xu, Jingjing , Tao, Long , Pei, Yanhu , Liu, Zhifeng , Liu, Tiantian , Chen, Jianzhou . HCDR-based motion planning for mobile manipulators with the continuous trajectory task . | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE , 2024 , 238 (12) , 5813-5832 . |
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摘要 ：
Controlling the friction coefficient is crucial for smart friction management and the reduction of energy consumption. The exploration of the mechanisms for regulating friction coefficients is at the core of this issue. In this study, it is proposed that microviscosity plays a pivotal role in influencing the rapid response of the friction coefficient variation in polymer-water-based lubrication systems. The change in microviscosity induced by salt ions was investigated using fluorescent probes and molecular dynamic simulation. The friction contact region was divided into core, corona and blank regions based on functional specificity to investigate microviscosity. The results of the study showed that the microviscosity exhibited by salt ions which are more readily adsorbed in the corona region is the key to determining changes in the friction coefficient. The high microviscosity in the core region of the polymer coating serves as the basis for maintaining a low friction coefficient. The blank region ensures low shear viscosity during friction. Therefore, the regulation of the friction coefficient can be achieved by controlling the microviscosity in the corona region using salt ions. This study not only presents a novel method for characterizing microviscosity but also establishes a theoretical basis for the intelligent regulation of friction.
关键词 ：
Molecular fluorescent probes Molecular fluorescent probes Molecular dynamics simulation Molecular dynamics simulation Friction regulation Friction regulation Superlubricity Superlubricity Microviscosity Microviscosity
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| GB/T 7714 | Zhang, Caixia , Wang, Lihui , Liang, Weihao et al. Fast-response mechanism for regulating friction coefficients induced by microviscosity in polymer-based aqueous lubrication systems [J]. | APPLIED SURFACE SCIENCE , 2024 , 654 . |
| MLA | Zhang, Caixia et al. "Fast-response mechanism for regulating friction coefficients induced by microviscosity in polymer-based aqueous lubrication systems" . | APPLIED SURFACE SCIENCE 654 (2024) . |
| APA | Zhang, Caixia , Wang, Lihui , Liang, Weihao , Li, Ying , Cheng, Yanhong , Liu, Zhifeng et al. Fast-response mechanism for regulating friction coefficients induced by microviscosity in polymer-based aqueous lubrication systems . | APPLIED SURFACE SCIENCE , 2024 , 654 . |
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摘要 ：
The loosening is one of the main failure modes of bolted joints. Currently, researchers only focused on bolt loosening behavior under simple axial or transverse loads. Understanding the loosening failure mechanism of bolted joints under complex load is important for improving reliability. A multi-directional loading test device was designed, and bolt loosening experiments were conducted. The effect of load direction and amplitude on bolt loosening behavior were investigated. The results indicate that bolt loosening can be divided into two stages. Load direction and load amplitude are critical factors determining the loosening trend in the later stage. In addition, a refined finite element model of bolted joints was established to verify and explain the experimental results. The FEA results show that the relative sliding between internal and external threads and the stress redistribution on the threads are the main reasons for the bolt loosening. The smaller the angle between the load direction and the tangential direction of the contact surface, the relative sliding more likely to occur.
关键词 ：
Mechanical testing Mechanical testing Finite element analysis Finite element analysis Mechanical engineering Mechanical engineering Fasteners Fasteners Steel Steel Bolted joint Bolted joint Loosening failure Loosening failure
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| GB/T 7714 | Yan, Xing , Liu, Zhifeng , Zhao, Yongsheng et al. Experimental and numerical study on the effect of load direction on the bolt loosening failure [J]. | ENGINEERING FAILURE ANALYSIS , 2024 , 163 . |
| MLA | Yan, Xing et al. "Experimental and numerical study on the effect of load direction on the bolt loosening failure" . | ENGINEERING FAILURE ANALYSIS 163 (2024) . |
| APA | Yan, Xing , Liu, Zhifeng , Zhao, Yongsheng , Li, Ying , Chen, Wentao , Li, Ming . Experimental and numerical study on the effect of load direction on the bolt loosening failure . | ENGINEERING FAILURE ANALYSIS , 2024 , 163 . |
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摘要 ：
本发明公开了一种刀具磨损量预测方法及系统，包括：获取待测设备的振动信号；将待测设备的振动信号输入至训练好的Transformer注意力网络和生成对抗网络相融合的刀具磨损量预测模型，得到待测设备的刀具磨损量预测结果，可以广泛应用于先进制造控制技术领域中。
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| GB/T 7714 | 张彩霞 , 张家溪 , 赵永胜 et al. 一种刀具磨损量预测方法及系统 : CN202310702856.2[P]. | 2023-06-14 . |
| MLA | 张彩霞 et al. "一种刀具磨损量预测方法及系统" : CN202310702856.2. | 2023-06-14 . |
| APA | 张彩霞 , 张家溪 , 赵永胜 , 刘志峰 , 张栋杰 . 一种刀具磨损量预测方法及系统 : CN202310702856.2. | 2023-06-14 . |
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摘要 ：
本发明公开了一种微型滚柱丝杠副光弹模型适应性自动加载装置，包含安装床身，所述床身与工作台通过螺栓固定，工作台可沿着床身导轨进行前后移动，所述工作台上安装有驱动电机与操作台，驱动电机与齿轮传动机构相连，驱动电机通过操作台进行控制，齿轮传动机构与丝杠夹持机构相连，通过齿轮驱动螺母转动实现对滚柱丝杠副的加载，通过力传感器与操作台显示并控制加载力的大小，齿轮传动机构外部通过齿轮轴连接有一个齿轮安装支架，齿轮安装支架通过螺栓与工作台相连接。本发明的电机与齿轮传动系统的联动可保证三个螺母自动以相同速度同时进行加载；丝杠夹持机构加载螺母与锁紧螺母可保证对丝杠进行持续加载，以便于热处理的进行。
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| GB/T 7714 | 程强 , 王畅 , 张涛 et al. 一种微型滚柱丝杠副光弹模型适应性自动加载装置 : CN202310743953.6[P]. | 2023-06-24 . |
| MLA | 程强 et al. "一种微型滚柱丝杠副光弹模型适应性自动加载装置" : CN202310743953.6. | 2023-06-24 . |
| APA | 程强 , 王畅 , 张涛 , 王建辉 , 张彩霞 , 刘志峰 . 一种微型滚柱丝杠副光弹模型适应性自动加载装置 : CN202310743953.6. | 2023-06-24 . |
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摘要 ：
本发明提供了一种滚珠丝杠副精度衰退预测方法，实现该方法的步骤包括如下：S1、基于Hertz接触理论对滚珠丝杠副进行载荷分析；S2、基于Archard磨损理论建立滚珠丝杠副预紧力衰退预测模型；S3、分析滚珠与滚道接触区域的运动特性，对滚珠丝杠副进行运动学分析；S4、建立滚珠丝杠副磨损量与预紧力退化耦合模型，对不同工况下滚珠丝杠副精度衰退模型的建立与预测分析；本发明对于研究滚珠误差、摩擦磨损、预紧力退化和精度衰退对精度保持性的作用影响机理，建立实现精度保持性评价体系具有重要意义。
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| GB/T 7714 | 杨聪彬 , 刘玉镜 , 程强 et al. 一种双螺母滚珠丝杠精度衰退预测方法 : CN202310250178.0[P]. | 2023-03-15 . |
| MLA | 杨聪彬 et al. "一种双螺母滚珠丝杠精度衰退预测方法" : CN202310250178.0. | 2023-03-15 . |
| APA | 杨聪彬 , 刘玉镜 , 程强 , 张涛 , 刘志峰 , 许静静 . 一种双螺母滚珠丝杠精度衰退预测方法 : CN202310250178.0. | 2023-03-15 . |
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摘要 ：
本发明公开了一种螺栓松动试验分析方法，包括：获取螺栓连接结构的承压面表面形貌参数；根据获取的承压面表面形貌参数计算分形参数；根据获取的承压面表面形貌参数计算承压面静摩擦系数；对螺栓连接结构进行拉伸试验，分析螺栓连接结构的残余预紧力，得到承压面静摩擦系数对螺栓松动的影响规律。本发明考虑了螺栓连接承压面静摩擦系数对螺栓连接结构松动的影响，通过引入域扩展因子及微凸体弹塑性变形阶段修正三维分形理论，推导出结合面静摩擦系数模型，并通过静摩擦系数模型来分析螺栓连接结构在受到循环载荷作用下的松动趋势，考虑承压面摩擦系数来分析螺栓连接的松动更加贴合实际工况，为螺栓连接结构在实际工况下松动研究提供了新的方法。
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| GB/T 7714 | 张彩霞 , 何金林 , 李迎 et al. 一种螺栓松动试验分析方法及系统 : CN202310254728.6[P]. | 2023-03-16 . |
| MLA | 张彩霞 et al. "一种螺栓松动试验分析方法及系统" : CN202310254728.6. | 2023-03-16 . |
| APA | 张彩霞 , 何金林 , 李迎 , 赵永胜 , 刘志峰 , 叶明鑫 . 一种螺栓松动试验分析方法及系统 : CN202310254728.6. | 2023-03-16 . |
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摘要 ：
本发明公开了一种闭式内反馈式静压转台轴向单油垫实验装置，包括：支架、轴承支柱、拉压传感器、进油管、仪表盘、出油管、回油箱、油路块、溢流阀、油泵电机、进油箱、丝杠电机、固定杆、丝杠、轴承、螺母、上支撑板、上油垫、下支撑板、下油垫、封油边、节流器、进油油腔、内反馈回油口、工作油腔、内反馈进油口、回油油腔、总进油口、转台导轨、油源。相对于其他静压转台的实验装置，本发明是一种闭式内反馈式静压转台轴向单油垫实验装置，它可以为闭式内反馈静压转台承载性能研究提供依据，降低了成本，稳定性也更强了。
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| GB/T 7714 | 杨聪彬 , 邵帅华 , 闫俊 et al. 一种闭式内反馈式静压转台轴向单油垫实验装置 : CN202310230976.7[P]. | 2023-03-12 . |
| MLA | 杨聪彬 et al. "一种闭式内反馈式静压转台轴向单油垫实验装置" : CN202310230976.7. | 2023-03-12 . |
| APA | 杨聪彬 , 邵帅华 , 闫俊 , 刘志峰 , 许静静 . 一种闭式内反馈式静压转台轴向单油垫实验装置 : CN202310230976.7. | 2023-03-12 . |
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摘要 ：
本发明公开了一种旋转机械故障诊断用迁移学习方法，旨在为故障诊断领域提供一个新的思路。该方法基于深度学习模型在故障诊断领域的智能且高效的识别性能，旨在解决实际车间工厂中工况、设备变换频繁，同源数据对故障诊断算法训练困难，并且在某些情况下，采集到的数据难以标记导致标签不足等问题。本方法具体包括数据处理、模型训练以及模型迁移三个方面，尤其在模型迁移方面提出了一种能够动态调节迁移层(冻结相应的网络层)以及初始化层的途径来自适应不同分布的目标域和源域的数据。本发明可以利用从源域数据学习到的具有可迁移性的知识，以目标域少量的有标签的数据为指导进行训练，完成目标域的故障诊断任务。
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| GB/T 7714 | 张彩霞 , 谢思映 , 赵永胜 et al. 一种旋转机械故障诊断用迁移学习方法 : CN202310968011.8[P]. | 2023-08-03 . |
| MLA | 张彩霞 et al. "一种旋转机械故障诊断用迁移学习方法" : CN202310968011.8. | 2023-08-03 . |
| APA | 张彩霞 , 谢思映 , 赵永胜 , 刘志峰 , 吴超 . 一种旋转机械故障诊断用迁移学习方法 : CN202310968011.8. | 2023-08-03 . |
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摘要 ：
本发明涉及输电线路自动化维修技术领域，公开了一种强风下输电导线状态偏差测量实验平台及测量方法，包括风机、风力调节机构、支撑机构、位置调节机构和风力检测机构，支撑机构设置有底板，底板上侧设置有半环形突起，底板上表面半环形突起内部固定安装有三角板，三角板为三角形，风力调节机构设置有升降台、安装盒和第一升降组件，风机固定安装在升降台上侧，第一升降组件安装在安装盒内，安装盒滑动安装在底板半环形突起内壁上；位置调节机构设置有固定块，固定块滑动安装在三角板内侧，风力检测机构设置有风杯、电路盒和第二升降组件，本发明实现了能够真实有效模拟强风干扰下的输电导线状态变化。
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| GB/T 7714 | 许静静 , 陶龙 , 刘志峰 et al. 一种强风下输电导线状态偏差测量实验平台及测量方法 : CN202310962750.6[P]. | 2023-08-02 . |
| MLA | 许静静 et al. "一种强风下输电导线状态偏差测量实验平台及测量方法" : CN202310962750.6. | 2023-08-02 . |
| APA | 许静静 , 陶龙 , 刘志峰 , 陈建洲 . 一种强风下输电导线状态偏差测量实验平台及测量方法 : CN202310962750.6. | 2023-08-02 . |
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