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学者姓名：刘晓敏
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Abstract ：
Temperature is an important factor affecting the performance of magnetorheological brake. In order to improve the heat dissipation performance of magnetorheological brake, annular cooling fins are designed based on TRIZ theory, and its temperature field simulation mathematical model is established. The effects of cooling fins on the magnetic field distribution and heat transfer of the brake are investigated by the coupled finite element method. An experimental platform was designed and constructed to verified the actual performance of the heat dissipation system is verified. The results show that after installing the cooling fins, the maximum temperature of the brake is reduced by 1.09 % after 30 min of static energization, and the maximum temperature is reduced by 4.40 % after 30 min of heat dissipation. The maximum temperature of the brake is significantly reduced after installing the cooling fins in the single and continuous braking conditions. Under the initial braking speeds of 20 km/h, 40 km/h, 60 km/h and 80 km/h, the maximum number of consecutive braking times of the brake is increased by 31.19 %, 14.81 %, 12.50 % and 16.67 %. After installing the cooling fins, the torque decay rate of the brake was reduced by 5.54 % after 5 min of continuous torque output.
Keyword ：
Contradiction matrix Contradiction matrix Cooling system Cooling system MRB MRB TRIZ TRIZ
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| GB/T 7714 | Cao, Zhiqiang , Liu, Xiaomin . Design and experimental study on passive heat dissipation system of MRB [J]. | INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER , 2025 , 164 . |
| MLA | Cao, Zhiqiang 等. "Design and experimental study on passive heat dissipation system of MRB" . | INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER 164 (2025) . |
| APA | Cao, Zhiqiang , Liu, Xiaomin . Design and experimental study on passive heat dissipation system of MRB . | INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER , 2025 , 164 . |
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Accurate engineering modeling of flour is often required for the calibration of its contact parameters in flour conveying systems. In this study, a typical calibration of contact model parameters was proposed to consider the effects of cohesion between flour particles and particle size, according to the static and dynamic angle of repose. Hertz-Mindlin with Johnson-Kendall-Roberts (JKR) contact model was also selected using the particle scaling theory. The orthogonal simulation tests were carried out to implement the sensitivity and variance analysis of the contact parameters using the discrete element method (DEM) model. The result showed that there were the most significant effects of JKR surface energy, the powder-powder coefficient of rolling friction, and the powder-steel coefficient of static friction on the static angle of repose. Since the contact parameters were calibrated only by static angle of repose, the cross-effects of multiple parameters were verified as well. Different combinations of contact parameters produced a similar effect of static angle of repose. Furthermore, five sets of contact parameters were selected to obtain a unique set of parameter values as the candidates. Their simulation from the static angle of repose was the closest related to the test. Then the dynamic stacking was further studied. The flour was filled in a cylindrical container with a transparent bottom and stainless-steel side. In the tests, the cylindrical container was set as 100 mm in diameter and 30 mm in height and then rotated around the axis at the given speed. The camera was used to record the dynamic angle of repose, which was defined as the maximum tilt angle between the slope and the horizontal plane before the powder collapsed. The contact parameters calibrated by the dynamic angle of repose were also verified under the condition of a single filling rate and a single rotational speed. Therefore, the dynamic angle of repose was further calibrated at the filling rates of 0.2 and 0.4, respectively, while the rotational speeds of 30, 40, 50, and 60 r/min. Optimal contact parameters were achieved for the flour with a powder-powder coefficient of restitution of 0.6, a powder-powder coefficient of static friction of 0.2, a powder-powder coefficient of rolling friction of 0.1, a powder-steel coefficient of restitution of 0.6, a powder-steel coefficient of static friction of 0.6, a powder-steel coefficient of rolling friction of 0.5 and a JKR surface energy of 0.12 J/m2. The dynamic angle of repose after DEM calibration was the closest to the test. The calibration with the dynamic angle of repose under various conditions effectively reduced the uncertainty of the calibration. After that, a rectangular container test was designed to verify the accuracy of the contact parameters. Among them, the flour was poured into a cube container with a side length of 100 mm, where the top surface of the assembly of flour was kept flat, and then the cabin lid of the container was lifted away, leading to the powder naturally flowing out of the container. The ratio of the flour mass remained to calculate the total mass in the container. There was a minimal relative error between the numerical simulation with the calibrated parameters and the measurement from the test. The DEM contact parameters of flour were improved in the reliability, simplicity, and feasibility of calibration. The finding can also provide a strong reference for the DEM parameters calibration of powdery materials in engineering applications. © 2024 Chinese Society of Agricultural Engineering. All rights reserved.
Keyword ：
Calibration Calibration Containers Containers End effectors End effectors Finite difference method Finite difference method Particle size Particle size Particle size analysis Particle size analysis
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| GB/T 7714 | Chen, Shuo , Jiang, Lijian , Lin, Xiezhao et al. Calibration tests for the contact parameters of flour particle using discrete element method [J]. | Transactions of the Chinese Society of Agricultural Engineering , 2024 , 40 (11) : 69-76 . |
| MLA | Chen, Shuo et al. "Calibration tests for the contact parameters of flour particle using discrete element method" . | Transactions of the Chinese Society of Agricultural Engineering 40 . 11 (2024) : 69-76 . |
| APA | Chen, Shuo , Jiang, Lijian , Lin, Xiezhao , Tang, Xusheng , Liu, Xiaomin , Zhang, Long . Calibration tests for the contact parameters of flour particle using discrete element method . | Transactions of the Chinese Society of Agricultural Engineering , 2024 , 40 (11) , 69-76 . |
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Abstract ：
针对分布式资源环境下仿生学与创新方法集成应用于产品创新设计问题，提出一种基于抽取式问答(Extractive question answering,EQA)和公理化设计(Axiomatic design,AD)的产品仿生创新方法。首先，构建基于知识挖掘的生物文本及工程设计信息数据库，实现生物及工程数据的处理与储存。其次，构建基于EQA的问答系统并提出一种生物参数获取方法，从设计功能的角度匹配合适的生物参数。然后，以融合EQA和AD的产品仿生创新设计流程为基础，实现从用户需求到设计方案的转换，获得可行的产品设计方案。最后，开发了相应的仿生创新设计辅助软件系统，辅助设计者进行产品创新设计，并以紫外线消毒车设计为例，验证了所提出的产品仿生创新设计方法的可行性与有效性。
Keyword ：
AD AD EQA EQA 仿生设计 仿生设计 创新设计 创新设计 紫外线消毒车 紫外线消毒车
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| GB/T 7714 | 陈亮 , 张活 , 刘晓敏 et al. 基于EQA和AD的产品仿生创新设计方法 [J]. | 机械工程学报 , 2024 , 60 (01) : 329-342 . |
| MLA | 陈亮 et al. "基于EQA和AD的产品仿生创新设计方法" . | 机械工程学报 60 . 01 (2024) : 329-342 . |
| APA | 陈亮 , 张活 , 刘晓敏 , 林章敏 . 基于EQA和AD的产品仿生创新设计方法 . | 机械工程学报 , 2024 , 60 (01) , 329-342 . |
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Abstract ：
In order to apply bionics and innovation methods to product innovation design in distributed resource environment, a method of product bionic innovative design based on EQA (Extractive question answering) and AD (Axiomatic design) is proposed. Firstly, the biological text and engineering design information database by text mining are constructed to realize the processing and storage of biological and engineering data. Secondly, to match the appropriate biological parameters from the perspective of design function, an EQA-based question and answering system is constructed as well as a biological parameter acquisition method was proposed. Then, based on the product bionic innovative design process integrated with EQA and AD, the transformation from user requirements to design schemes is realized and the feasible product design schemes are obtained. Finally, the corresponding bionic design assisted software system is developed to assist the designer to carry out innovative product design, and the design of ultraviolet disinfection vehicle is taken as an example to further demonstrate the feasibility and effectiveness of the proposed product bionic innovative design method. © 2024 Chinese Mechanical Engineering Society. All rights reserved.
Keyword ：
Bionics Bionics Digital storage Digital storage Disinfection Disinfection Product design Product design
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| GB/T 7714 | Chen, Liang , Zhang, Huo , Liu, Xiaomin et al. Product Innovation Bionic Design Method Based on EQA and AD [J]. | Journal of Mechanical Engineering , 2024 , 60 (1) : 329-342 . |
| MLA | Chen, Liang et al. "Product Innovation Bionic Design Method Based on EQA and AD" . | Journal of Mechanical Engineering 60 . 1 (2024) : 329-342 . |
| APA | Chen, Liang , Zhang, Huo , Liu, Xiaomin , Lin, Zhangmin . Product Innovation Bionic Design Method Based on EQA and AD . | Journal of Mechanical Engineering , 2024 , 60 (1) , 329-342 . |
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Abstract ：
本实用新型涉及一种应用于复杂空间特种作业的机翼杆可伸缩的四旋翼无人机，包括机身、设于机身上方四角的四个旋翼组件，所述机身的周侧设有与四个旋翼组件的位置相对应的四根可伸缩机翼杆，所述旋翼组件安装在位置相对应的可伸缩机翼杆的伸缩端上；所述机身上设有伸缩驱动机构，所述伸缩驱动机构驱动四根可伸缩机翼杆同步伸缩，以调节旋翼组件与机身之间的距离。本实用新型结构设计合理，通过在旋翼组件与机身之间设置可伸缩机翼杆，可根据作业空间情况，通过可伸缩机翼杆的伸缩实现对整体无人机的大小进行调节，具有良好的空间适应能力，可应用于复杂空间的特种作业。
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| GB/T 7714 | 陈亮 , 刘跃 , 刘晓敏 et al. 应用于复杂空间特种作业的机翼杆可伸缩的四旋翼无人机 : CN202321700767.6[P]. | 2023-06-30 00:00:00 . |
| MLA | 陈亮 et al. "应用于复杂空间特种作业的机翼杆可伸缩的四旋翼无人机" : CN202321700767.6. | 2023-06-30 00:00:00 . |
| APA | 陈亮 , 刘跃 , 刘晓敏 , 张志鑫 . 应用于复杂空间特种作业的机翼杆可伸缩的四旋翼无人机 : CN202321700767.6. | 2023-06-30 00:00:00 . |
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本发明涉及一种多功能宠物消毒杀菌洗浴机及其工作方法，包括壳体，所述壳体的内部从后往前依次设有洗浴杀菌仓和烘干仓，所述洗浴杀菌仓与烘干仓经由供宠物穿过的中间开口相连通，洗浴杀菌仓的底部设有洗浴组件，洗浴杀菌仓的上端设有身体消毒组件；所述烘干仓靠近中间开口的一端设有头部夹紧组件，烘干仓的上端设有烘干组件和头部消毒组件。本发明设计合理，集合了消毒杀菌、洗浴、烘干等功能于一体，使用方便，提高消毒效率，避免了给宠物多次洗浴消毒带来的影响。
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| GB/T 7714 | 陈亮 , 张志鑫 , 刘晓敏 et al. 多功能宠物消毒杀菌洗浴机及其工作方法 : CN202210039686.X[P]. | 2022-01-14 00:00:00 . |
| MLA | 陈亮 et al. "多功能宠物消毒杀菌洗浴机及其工作方法" : CN202210039686.X. | 2022-01-14 00:00:00 . |
| APA | 陈亮 , 张志鑫 , 刘晓敏 , 刘跃 . 多功能宠物消毒杀菌洗浴机及其工作方法 : CN202210039686.X. | 2022-01-14 00:00:00 . |
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Abstract ：
包围盒构建是虚拟装配中降低碰撞检测复杂性的一种有效方法.针对X3D环境中Box组件默认创建轴对齐包围盒(axis aligned bounding box,AABB)的不足,研究了该环境下方向包围盒(oriented bounding box,OBB)的创建方法.通过计算欧拉角,结合Transform组件,实现该环境下OBB 包围盒的构建.为了提高X3D环境中包围盒的构建效率,提出一种基于AABB与OBB混合式自适应包围盒生成算法,增加了对物体倾斜程度的判断,使其能够根据三维模型几何特征,自适应选择AABB方法或OBB方法构造包围盒.研究结果表明,当夹角阈值设定为15°时,该算法使整个茶壶包围盒生成总时间比纯OBB方法减少5.61%,总体积比纯AABB方法减少 1.53%.该算法同时结合了AABB包围盒生成速度快和OBB包围盒紧密性好的特点,是一种有效的包围盒构建算法.
Keyword ：
X3D X3D 包围盒 包围盒 混合式 混合式 自适应 自适应
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| GB/T 7714 | 朱晓林 , 刘晓敏 , 洪玫 et al. X3D环境下混合式自适应包围盒生成算法研究 [J]. | 实验技术与管理 , 2023 , 40 (12) : 131-136 . |
| MLA | 朱晓林 et al. "X3D环境下混合式自适应包围盒生成算法研究" . | 实验技术与管理 40 . 12 (2023) : 131-136 . |
| APA | 朱晓林 , 刘晓敏 , 洪玫 , 黄新成 , 杨传耀 . X3D环境下混合式自适应包围盒生成算法研究 . | 实验技术与管理 , 2023 , 40 (12) , 131-136 . |
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本实用新型涉及一种核酸采样装置，其特征在于：包括机体和设在机体上的拭子供料装置、采样装置、试管存储机构、试管装取盖装置和样本处理装置；其中拭子供料装置包括用于放置拭子的漏斗和设在漏斗下出口部的由电机驱动转动的转筒，所述转筒的外围套设有固定套，在固定套上设有上开槽和下开槽，上开槽与漏斗下出口部贯通，在转筒的表面上设有至少一个内凹的转槽，在下开槽的下方设有拭子支撑座；该核酸采样装置具有便利性、安全性和规范性，可以节约医疗资源，还能提升采集的效率。
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| GB/T 7714 | 刘晓敏 , 李龙基 , 陈亮 et al. 核酸采样装置 : CN202320110381.3[P]. | 2023-01-19 00:00:00 . |
| MLA | 刘晓敏 et al. "核酸采样装置" : CN202320110381.3. | 2023-01-19 00:00:00 . |
| APA | 刘晓敏 , 李龙基 , 陈亮 , 李静远 . 核酸采样装置 : CN202320110381.3. | 2023-01-19 00:00:00 . |
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本实用新型涉及一种多功能核酸试管取放装置，包括支撑架及其下方的试管架，所述支撑架上经一核酸试管取放装置取放试管架内的核酸试管，所述试管架侧端设有核酸试管扫码装置，该核酸试管扫码装置远离试管架一端上方设有试管开盖装置，试管开盖装置固连在支撑架上，所述试管开盖装置包括以利将核酸试管自核酸试管扫码装置夹取至试管开盖装置的夹持机构、以利拧转核酸试管管盖的开盖机构以及用以切断多余棉签的棉签切断机构，实现核酸试管的取放、开盖、咽拭子棉签剪断和试管扫码于一体的高度集成化，有效的解决了之前由于取放、开盖和咽拭子棉签剪断、核酸试管扫码分散而导致的空间利用率不足和运行效率低、关节机械臂成本高的问题。
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| GB/T 7714 | 陈亮 , 刘本刚 , 刘晓敏 et al. 一种多功能核酸试管取放装置 : CN202223555666.2[P]. | 2022-12-30 00:00:00 . |
| MLA | 陈亮 et al. "一种多功能核酸试管取放装置" : CN202223555666.2. | 2022-12-30 00:00:00 . |
| APA | 陈亮 , 刘本刚 , 刘晓敏 , 邓浩 . 一种多功能核酸试管取放装置 : CN202223555666.2. | 2022-12-30 00:00:00 . |
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本实用新型涉及一种多功能宠物消毒杀菌洗浴机，包括壳体，所述壳体的内部从后往前依次设有洗浴杀菌仓和烘干仓，所述洗浴杀菌仓与烘干仓经由供宠物穿过的中间开口相连通，洗浴杀菌仓的底部设有洗浴组件，洗浴杀菌仓的上端设有身体消毒组件；所述烘干仓靠近中间开口的一端设有头部夹紧组件，烘干仓的上端设有烘干组件和头部消毒组件。本实用新型设计合理，集合了消毒杀菌、洗浴、烘干等功能于一体，使用方便，提高消毒效率，避免了给宠物多次洗浴消毒带来的影响。
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| GB/T 7714 | 陈亮 , 张志鑫 , 刘晓敏 et al. 多功能宠物消毒杀菌洗浴机 : CN202220087941.3[P]. | 2022-01-14 . |
| MLA | 陈亮 et al. "多功能宠物消毒杀菌洗浴机" : CN202220087941.3. | 2022-01-14 . |
| APA | 陈亮 , 张志鑫 , 刘晓敏 , 刘跃 . 多功能宠物消毒杀菌洗浴机 : CN202220087941.3. | 2022-01-14 . |
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