机构

• 西安光学精密机械研究... [6]
• 长春光学精密机械与物... [5]
• 自动化研究所 [1]

采集方式

• OAI收割 [12]

内容类型

• 会议论文 [8]
• 期刊论文 [4]

发表日期

• 2024 [1]
• 2022 [2]
• 2021 [1]
• 2020 [1]
• 2019 [1]
• 2015 [1]
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学科主题

• 工业技术 [1]
• 工业技术::工程光学 [1]

筛选

浏览/检索结果: 共12条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Powerful-IoU: More straightforward and faster bounding box regression loss with a nonmonotonic focusing mechanism 期刊论文  OAI收割 NEURAL NETWORKS, 2024, 卷号: 170, 页码: 276-284 作者:  Liu, Can;  Wang, Kaige;  Li, Qing;  Zhao, Fazhan;  Zhao, Kun   |  收藏  |  浏览/下载：65/0  |  提交时间：2024/02/22 Object detection  Bounding box regression  Loss function design  Focusing mechanism   The time varying reliability analysis for space focusing mechanism based on probability model 期刊论文  OAI收割 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, 2022, 卷号: 36, 期号: 11, 页码: 5587-5597 作者:  Cheng, Penghui;  Wu, Mengyuan;  Li, Chuang   |  收藏  |  浏览/下载：42/0  |  提交时间：2022/11/29 Space focusing mechanism  Time varying reliability  Failure mode and effects analysis  Homogeneous composite poisson process  Archard wear model  Monte Carlo simulation   Optimization design of compliant focusing mechanism for space optical camera with light weight 期刊论文  OAI收割 ADVANCES IN MECHANICAL ENGINEERING, 2022, 卷号: 14, 期号: 8 作者:  Li, Yan;  Liu, Bo;  Ge, Wenjie;  Tong, Xinxing   |  收藏  |  浏览/下载：36/0  |  提交时间：2022/09/29 Compliant mechanism  focusing mechanism  amplifier  space optical camera   Design of secondary lens focusing mechanism for multispectral camera 会议论文  OAI收割 Xi'an, China, 2021-05-28 作者:  Rui, Wang;  Xiuqin, Su;  Yongming, Qiao;  Tao, Lv;  Xuan, Wang   |  收藏  |  浏览/下载：41/0  |  提交时间：2021/07/20 Secondary lens focusing mechanism  Rhomboid amplifier large PZT actuator  Flexible hinge  Focusing speed  Tilt error   Optimization and Experiment of a Novel Compliant Focusing Mechanism for Space Remote Sensor 期刊论文  OAI收割 SENSORS, 2020, 卷号: 20, 期号: 23 作者:  Li, Yan;  Ge, Wenjie;  Zhang, Xu;  Tong, Xinxing   |  收藏  |  浏览/下载：38/0  |  提交时间：2021/01/15 compliant mechanism  flexure amplifier  focusing mechanism  space remote sensor   A Focusing Mechanism Based on Flexible Hinges for Space Telescope 会议论文  OAI收割 Qingdao, PEOPLES R CHINA, 2019-05-19 作者:  Ma, Xiaozhe;  Li, Chuang;  Cheng, Penghui;  Hu, Bin   |  收藏  |  浏览/下载：30/0  |  提交时间：2020/03/04 Focusing mechanism  Structure design  Worm gear reducer  Flexible hinge  Modal analysis   The design of aerial camera focusing mechanism 会议论文  OAI收割 applied optics and photonics, china: optical test, measurement, and equipment, aopc 2015, beijing, china, 2015-05 作者:  Hu, Changchang;  Yang, Hongtao;  Niu, Haijun 收藏  |  浏览/下载：15/0  |  提交时间：2016/01/07 Focusing mechanism  focusing accuracy  ball screws  lightw eight   Design and experimental research of a new type focus mechanism used in space-based telescope (EI CONFERENCE) 会议论文  OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者:  Wang D. 收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25 The position of focal plane will be changed because of temperature fluctuation and vacuum environment. In order to make the telescope work well  positioning accuracy of the mechanism is 0.008mm. The performance satisfies the need of precision  a focusing mechanism is needed. To majority of large space-based telescopes  and the scheme design is reasonable and practicable. 2012 IEEE.  the general way to do this would be to use a reflector  which was located in the backfocal distance. One of typical schemes of this mechanism was introduced  however  because of the big axial size  the mechanism can't be used when the size of the enclosure was limited. A new type of focusing mechanism was introduced  which has such advantages of small size  high accuracy and low mass. The design and test methods had been discussed. According to the results  the repeatability positioning accuracy is 0.0025mm   Accuracy analysis and optimization design of constant-diameter cam (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China Yuan G.-Q.; Ding Y.-L.; Hui S.-W.; Liu Z.-H.; Li Y.-W. 收藏  |  浏览/下载：35/0  |  提交时间：2013/03/25 A constant-diameter cam gets its name because the centers of the rollers are a constant distance apart. This paper presents an Accuracy analysis and optimization design method for constant-diameter cam mechanism. Factors affecting the accuracy of cam are studied in the paper. The influences of the roller radial runout  cam machining error and the base circle radius on accuracy are analyzed. Then  a method to guarantee the cam diameter constant and remove return stroke error is studied using least-squares method. The analysis results indicate that the focusing accuracy can reach 4.4m  and the return stroke error can reach 4.8m the functioning of institutions is stable and reliable. 2011 IEEE.   Application of precision harmonic gear drive in focusing mechanism of space camera (EI CONFERENCE) 会议论文  OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China 作者:  Zhang X.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 A kind of precision harmonic gear drive in the focusing mechanism of space camera is studied  which adopt external meshing complex wave transmission mode. Wave generator is combined with an elliptic cam and a flexible bearing around it. Flexspline is a structure of single wave with the same teeth. The output shaft is supported by a single cross-roller bearing. Ball screws connected the output shaft translate the rotational motion to the linear motion  and drive the focusing mirror repeated moving along the linear guide. The output rigid wheel is connected with absolute encoder to detect displacement of focusing movement. It has the characteristics of big transmission ratio  high precision  compact structure  high efficiency and smooth running etc. According to the practical application of this harmonic gear drive in the space camera  the location relationship between the displacement of focusing structure and the focal plane movement is derived  and the system error is analyzed  its accuracy is tested with the open-loop control method. Experimental results show that transmission ratio of the instrument is 1:70  repeated positional accuracy is 2m  which meet the requirements for use. 2010 SPIE.