Query：
学者姓名：贾超
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
为了准确计算新型内啮合S型齿轮的啮合效率，引入了考虑轮齿表面滑差、润滑油状况及时变载荷等因素的弹流润滑时变摩擦模型；分析啮合齿面润滑机制，通过轮齿接触分析（Tooth Contact Analysis,TCA）及轮齿承载接触分析，计算了啮合齿面滑动摩擦因数及摩擦损失功率；在此基础上，获得内啮合S型齿轮啮合周期内的瞬时啮合效率和平均啮合效率，并给出了计算实例。研究结果表明，在相同设计参数下，新型内啮合S型齿轮较渐开线齿轮有更高的啮合效率；经螺旋线修形后，新型内啮合S型齿轮的啮合效率有所提高且随修形量的增大而增大。
Keyword ：
啮合效率 啮合效率 新型内啮合S型齿轮 新型内啮合S型齿轮 轮齿承载接触分析 轮齿承载接触分析 轮齿接触分析 轮齿接触分析
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 程洪业 , 贾超 , 方宗德 . 新型内啮合S型齿轮啮合效率计算与分析 [J]. | 机械传动 , 2024 , 48 (03) : 59-66 . |
| MLA | 程洪业 等. "新型内啮合S型齿轮啮合效率计算与分析" . | 机械传动 48 . 03 (2024) : 59-66 . |
| APA | 程洪业 , 贾超 , 方宗德 . 新型内啮合S型齿轮啮合效率计算与分析 . | 机械传动 , 2024 , 48 (03) , 59-66 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
A study on the dynamic characteristics of non-orthogonal helical face gears with higher-order tooth surface modification is presented in this article. The method of designing the non-orthogonal helical face gears with higher-order tooth surface modification is described. First, MATLAB programming that can be used for the parameterized 3D mesh calculations of non-orthogonal helical face gears with higher-order tooth surface modification are completed. Second, the calculated grid nodes from the MATLAB programming are imported into ABAQUS to generate a three-dimensional mode. The meshing stiffness of the gear pair is then estimated using finite element analysis. Ultimately, a dynamic model of a non-orthogonal helical face gear pair involving second-order and higher-order tooth surface modifications is established. One example is presented to study the dynamic characteristics of non-orthogonal helical face gear pairs with second-order and higher-order tooth surface modifications. The results show that the dynamic response from the second-order tooth surface modification has a higher peak-to-peak amplitude than that of the higher-order modification.
Keyword ：
dynamic characteristics dynamic characteristics higher-order transmission error higher-order transmission error non-orthogonal helical face gears non-orthogonal helical face gears tooth surface modification tooth surface modification
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Jia, Chao , Zhang, Ge . Investigation on the Dynamic Characteristics of Non-Orthogonal Helical Face Gears with Higher-Order Tooth Surface Modification [J]. | MATHEMATICS , 2024 , 12 (3) . |
| MLA | Jia, Chao 等. "Investigation on the Dynamic Characteristics of Non-Orthogonal Helical Face Gears with Higher-Order Tooth Surface Modification" . | MATHEMATICS 12 . 3 (2024) . |
| APA | Jia, Chao , Zhang, Ge . Investigation on the Dynamic Characteristics of Non-Orthogonal Helical Face Gears with Higher-Order Tooth Surface Modification . | MATHEMATICS , 2024 , 12 (3) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
基于曲线型啮合线设计了一种高承载能力低滑动率新型齿轮，借助微分几何和空间啮合理论，通过预设抛物线啮合线推导新型齿轮齿廓方程，计算新型齿轮重合度和齿面滑动率．利用Matlab编程仿真齿轮加工过程，实现新型齿轮参数化高精度三维有限元网格建模．在此基础上，通过轮齿承载接触分析，深入分析安装误差、齿面修形等对新型齿轮齿面接触应力和齿根弯曲应力的影响．结果表明：与渐开线齿轮相比，设计的新型齿轮重合度明显提高，传动更加平稳；齿面相对滑动率降低22.9%，啮合效率提高，有效寿命延长；相同载荷下，无误差无修形工况和有误差有修形工况的新型齿轮承载能力都明显优于渐开线齿轮，特别是齿面接触应力减小高达17.0%以上．
Keyword ：
低滑动率 低滑动率 新型齿轮 新型齿轮 轮齿承载接触分析 轮齿承载接触分析 高承载 高承载 齿廓设计 齿廓设计
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 贾超 , 贺庆拓 , 方宗德 . 新型高承载能力低滑动率齿轮设计与分析 [J]. | 华中科技大学学报(自然科学版) , 2024 , 52 (06) : 87-93 . |
| MLA | 贾超 等. "新型高承载能力低滑动率齿轮设计与分析" . | 华中科技大学学报(自然科学版) 52 . 06 (2024) : 87-93 . |
| APA | 贾超 , 贺庆拓 , 方宗德 . 新型高承载能力低滑动率齿轮设计与分析 . | 华中科技大学学报(自然科学版) , 2024 , 52 (06) , 87-93 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
S-gear is a new type of gear with the advantages of small sliding coefficient, high meshing efficiency and large load-bearing capacity due to the concave-convex contact in a vicinity of the meshing start and end. In view of the excellent characteristics and potential value of S-gears, this paper deeply studies the designation and meshing characteristics of the S-gears. First, based on the relationship of S-shaped rack-cutter and machining motion, the tooth surface of the S-gears is generated. Second, by superimposing the surface of modified volume with the standard tooth surface, the modified tooth surface of S-gears is constructed. On this basis, using MATLAB programming, the coordinates of 3D grid node of modified S-gears are calculated. Third, loaded tooth contact analysis (LTCA) is used to study the meshing characteristics of the S-gears with longitudinal modifications and misalignment angle errors. Ultimately, one example is presented and the result shows that after tooth surface modification, the load distribution of S-gears is effectively improved and error sensitivity is greatly reduced. S-gear is a new type of gear which is different from involute gears and has great potential application prospect in large load-bearing field, which will be further studied in the future.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Jia, C. , Xiao, J. M. . Computerized Simulation of Meshing of S-gears and Modification Geometry [J]. | 6TH INTERNATIONAL CONFERENCE ON AERONAUTICAL, AEROSPACE AND MECHANICAL ENGINEERING, AAME 2023 , 2023 , 2512 . |
| MLA | Jia, C. 等. "Computerized Simulation of Meshing of S-gears and Modification Geometry" . | 6TH INTERNATIONAL CONFERENCE ON AERONAUTICAL, AEROSPACE AND MECHANICAL ENGINEERING, AAME 2023 2512 (2023) . |
| APA | Jia, C. , Xiao, J. M. . Computerized Simulation of Meshing of S-gears and Modification Geometry . | 6TH INTERNATIONAL CONFERENCE ON AERONAUTICAL, AEROSPACE AND MECHANICAL ENGINEERING, AAME 2023 , 2023 , 2512 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Introduction: Regular and rapid large-scale screening for pathogens is crucial for controlling pandemics like Coronavirus Disease 2019 (COVID-19). In this study, we present the development of a digital point-of-care testing (POCT) system utilizing microfluidic paper-based analytical devices (mu PADs) for the detection of SARS-CoV-2 gene fragments. The system incorporates temperature tuning and fluorescent detection components, along with intelligent and autonomous image acquisition and self-recognition programs. Methods: The developed POCT system is based on the nucleic acid amplification test (NAAT), a well-established molecular biology technique for detecting and amplifying nucleic acids. We successfully detected artificially synthesized SARS-CoV-2 gene fragments, namely ORF1ab gene, N gene, and E gene, with minimal reagent consumption of only 2.2 mu L per readout, representing a mere 11% of the requirements of conventional in-tube methods. The power dissipation of the system was low, at 6.4 W. Results: Our testing results demonstrated that the proposed approach achieved a limit of detection of 1000 copies/mL, which is equivalent to detecting 1 copy or a single RNA template per reaction. By employing standard curve analysis, the quantity of the target templates can be accurately determined. Conclusion: The developed digital POCT system shows great promise for rapid and reliable detection of SARS-CoV-2 gene fragments, offering a cost-effective and efficient solution for controlling pandemics. Its compatibility with other diagnostic techniques and low reagent consumption make it a viable option to enhance healthcare in resource-limited areas.
Keyword ：
automatic image processing automatic image processing NAAT NAAT paper microfluidics paper microfluidics POCT POCT SARS-CoV-2 template detection SARS-CoV-2 template detection
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Dong, Hui , Mo, Jin , Yu, Yongjian et al. A portable system for economical nucleic acid amplification testing [J]. | FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY , 2023 , 11 . |
| MLA | Dong, Hui et al. "A portable system for economical nucleic acid amplification testing" . | FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY 11 (2023) . |
| APA | Dong, Hui , Mo, Jin , Yu, Yongjian , Xie, Wantao , Zheng, Jianping , Jia, Chao . A portable system for economical nucleic acid amplification testing . | FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY , 2023 , 11 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
This study proposes a double-crown tooth surface modification technology that improves the load-carrying capacity of non-orthogonal helical tooth surface gears. The tooth modification is determined by a modified rack-cutter, and its feed motion is related to an intentionally designed transmission error. The novelty of the tooth modification design is that the transmission error can be pre-designed. First, changing the tooth profile of the tool enables preliminary modification along the tooth profile direction; second, by modifying the interaction between the tool and the machined gear, subsequent fine adjustments are made to the contact path. This two-stage tooth modification strategy not only retains the advantages of the traditional method but also significantly improves the balance of the load distribution on the tooth surface through an original contact path modification strategy. Through systematic tooth contact analysis (TCA) and loaded tooth contact analysis (LTCA), it was verified that the new method reduces contact stress and tooth root bending stress and improves the gear's resistance to misalignment errors. This research provides the basis and motivation for further exploring and improving this tooth profile modification technology to solve the challenges faced by more complex gear systems.
Keyword ：
load-bearing capacity load-bearing capacity loaded tooth contact analysis loaded tooth contact analysis non-orthogonal helical face gears non-orthogonal helical face gears novel tooth modification novel tooth modification tooth contact analysis tooth contact analysis
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Jia, Chao , Li, Bingquan , Xu, Junhong et al. A Novel Tooth Modification Methodology for Improving the Load-Bearing Capacity of Non-Orthogonal Helical Face Gears [J]. | MACHINES , 2023 , 11 (12) . |
| MLA | Jia, Chao et al. "A Novel Tooth Modification Methodology for Improving the Load-Bearing Capacity of Non-Orthogonal Helical Face Gears" . | MACHINES 11 . 12 (2023) . |
| APA | Jia, Chao , Li, Bingquan , Xu, Junhong , Mundo, Domenico . A Novel Tooth Modification Methodology for Improving the Load-Bearing Capacity of Non-Orthogonal Helical Face Gears . | MACHINES , 2023 , 11 (12) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In order to improve the meshing performance of non-orthogonal helical face-gears, a designation of double-crowned tooth modification with high-order transmission error (HTE) is constructed in this paper. First, the double-crowned tooth modification is designed based on the tooth profile modification of the rack-cutter and the motion relationship between the rack-cutter and the processed pinion, and then, the designation of high-order tooth modification is verified by using tooth contact analysis (TCA). Second, a parameterized 3D grid of modified gears is generated based on MATLAB programming, and a simulation of loaded tooth contact analysis for modified non-orthogonal helical face-gears is carried out by using ABAQUS software. Third, the calculation results of the standard tooth, second-order parabolic modified tooth and high-order parabolic modified tooth are compared with and without the assembly errors. Ultimately, an example is presented and the results show that the geometric transmission error of the newly designed high-order modified non-orthogonal helical face-gears conforms to the expected design. Compared with the second-order parabolic tooth modification, the newly designed high-order tooth modification pair shows a better meshing performance with and without assembly errors. The research of this paper can provide ideas and methods for the tooth modification design of non-orthogonal helical face-gear. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
Keyword ：
High-order transmission error High-order transmission error Loaded tooth contact analysis Loaded tooth contact analysis Non-orthogonal helical face-gear Non-orthogonal helical face-gear Parameterized 3D grid Parameterized 3D grid Tooth contact analysis Tooth contact analysis
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xu, J. , Jia, C. . Design and Analysis of Modified Non-orthogonal Helical Face-Gears with a High-Order Transmission Error [未知]. |
| MLA | Xu, J. et al. "Design and Analysis of Modified Non-orthogonal Helical Face-Gears with a High-Order Transmission Error" [未知]. |
| APA | Xu, J. , Jia, C. . Design and Analysis of Modified Non-orthogonal Helical Face-Gears with a High-Order Transmission Error [未知]. |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Researchers are investigating how to make machines read our body language to make human-machine interaction (HMI) more intelligent and efficient. The lower limbs contain a variety of gestures, and it is also one of the most effective ways to express body information. Therefore, foot gesture recognition (FGR) has become a popular technology for human-machine interface with simple, fast, and accurate features. To give the reader a quick overview of the current state of FGR research, this review takes the sensing methods used in the FGR technology as an entry point, introduces different sensing methods, machine learning algorithms, and applications, and discusses the limitations and future work on FGR systems. The results show that the mainstream sensing methods for FGR are plantar pressure, inertial, visual, surface electromyography (sEMG), and ultrasound (US). Current applications of FGR are simplified control, medical rehabilitation, virtual reality (VR), and smart prosthetics. Research on hybrid sensing methods and deep learning algorithms has gradually increased in recent years. Future research will focus on designing sensor hardware that can respond to environmental changes, using multimodal sensing for interaction, and designing more comfortable and portable FGR systems.
Keyword ：
Ankle joint movement Ankle joint movement foot gesture recognition (FGR) foot gesture recognition (FGR) human-machine interaction (HMI) human-machine interaction (HMI) machine learning machine learning sensors sensors
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Yue, Lian , Lu Zongxing , Hui, Dong et al. How to Achieve Human-Machine Interaction by Foot Gesture Recognition: A Review [J]. | IEEE SENSORS JOURNAL , 2023 , 23 (15) : 16515-16528 . |
| MLA | Yue, Lian et al. "How to Achieve Human-Machine Interaction by Foot Gesture Recognition: A Review" . | IEEE SENSORS JOURNAL 23 . 15 (2023) : 16515-16528 . |
| APA | Yue, Lian , Lu Zongxing , Hui, Dong , Chao, Jia , Liu Ziqiang , Liu Zhoujie . How to Achieve Human-Machine Interaction by Foot Gesture Recognition: A Review . | IEEE SENSORS JOURNAL , 2023 , 23 (15) , 16515-16528 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
设计了一种新型内啮合S型齿轮，并对其接触特性进行了深入分析．基于S型齿廓插刀和加工运动关系，推导了新型内啮合S型齿轮齿面方程，并对内啮合S型齿轮副进行了干涉检查．通过修形曲面与标准齿面叠加的方法构造修形齿面，在此基础上运用Matlab编程计算修形齿轮的三维网格节点坐标．利用轮齿接触分析(TCA)和承载轮齿接触分析(LTCA)研究内啮合S型齿轮在不同修形量和不同误差下的几何接触特性和加载接触特性，并给出了计算实例．结果表明：设计的新型内啮合S型齿轮不产生根切和干涉等，工作齿面接触良好，可以实现正确啮合传动；齿向修形后，内啮合S型齿轮齿面载荷分布得到改善，误差敏感性降低．
Keyword ：
内啮合S型齿轮 内啮合S型齿轮 承载轮齿接触分析 承载轮齿接触分析 轮齿接触分析 轮齿接触分析 齿向修形 齿向修形 齿面设计 齿面设计
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 贾超 , 程洪业 , 李国炬 et al. 新型内啮合S型齿轮设计及啮合特性分析 [J]. | 华中科技大学学报(自然科学版) , 2023 , 51 (12) : 60-65 . |
| MLA | 贾超 et al. "新型内啮合S型齿轮设计及啮合特性分析" . | 华中科技大学学报(自然科学版) 51 . 12 (2023) : 60-65 . |
| APA | 贾超 , 程洪业 , 李国炬 , 方宗德 . 新型内啮合S型齿轮设计及啮合特性分析 . | 华中科技大学学报(自然科学版) , 2023 , 51 (12) , 60-65 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
S-gear is a new type of gear with the advantages of small sliding coefficient, high meshing efficiency and large load-bearing capacity due to the concave-convex contact in a vicinity of the meshing start and end. In view of the excellent characteristics and potential value of S-gears, this paper deeply studies the designation and meshing characteristics of the S-gears. First, based on the relationship of S-shaped rack-cutter and machining motion, the tooth surface of the S-gears is generated. Second, by superimposing the surface of modified volume with the standard tooth surface, the modified tooth surface of S-gears is constructed. On this basis, using MATLAB programming, the coordinates of 3D grid node of modified S-gears are calculated. Third, loaded tooth contact analysis (LTCA) is used to study the meshing characteristics of the S-gears with longitudinal modifications and misalignment angle errors. Ultimately, one example is presented and the result shows that after tooth surface modification, the load distribution of S-gears is effectively improved and error sensitivity is greatly reduced. S-gear is a new type of gear which is different from involute gears and has great potential application prospect in large load-bearing field, which will be further studied in the future.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | C Jia , J M Xiao . Computerized Simulation of Meshing of S-gears and Modification Geometry [J]. | Journal of Physics:Conference Series , 2023 , 2512 (1) . |
| MLA | C Jia et al. "Computerized Simulation of Meshing of S-gears and Modification Geometry" . | Journal of Physics:Conference Series 2512 . 1 (2023) . |
| APA | C Jia , J M Xiao . Computerized Simulation of Meshing of S-gears and Modification Geometry . | Journal of Physics:Conference Series , 2023 , 2512 (1) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
