中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共4条，第1-4条

帮助

条数/页：排序方式：
	A review of research on tether type submerged floating tunnels 期刊论文 OAI收割 APPLIED OCEAN RESEARCH, 2023, 卷号: 134, 页码: 103525 作者: Xu, Wanhai; Ma YX(马烨璇); Liu, Guangjun; Li, Mingliu; Li, Ang \| 收藏 \| 浏览/下载：23/0 \| 提交时间：2023/04/20 Submerged floating tunnel Tether type Environmental load Traffic load Impact load Safety evaluation Vibration control
	Analysis and simulation of downhole vibration environment 期刊论文 OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2023, 卷号: 66, 期号: 1, 页码: 153-161 作者: Wang ZhongXing; Pei RenZhong; Yuan Hongjie; Chen Kai; Zhang TianXin \| 收藏 \| 浏览/下载：26/0 \| 提交时间：2023/03/30 Downhole instrument Vibration Reliability Environmental test Intelligent drilling
	A new energy harvester using a piezoelectric and suspension electromagnetic mechanism 期刊论文 OAI收割 JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A, 2013, 卷号: 14, 期号: 12, 页码: 890-897 作者: Dan XB(单小彪); Guan, Shi-wei; Liu ZS(刘章石); Xu, Zhen-long; Xie T(谢涛) 收藏 \| 浏览/下载：76/0 \| 提交时间：2014/04/16 Hybrid energy harvesting Piezoelectric Electromagnetic Environmental vibration
	Gimbal displacement error analysis on an electro-optical seeker (EI CONFERENCE) 会议论文 OAI收割 Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/03/25 It is essential to analyze the gimbal displacement errors for a seeker due to the importance for cueing of targets and tracking for the final approach. Otherwise for a seeker electro-driven with a concentric glass dome the large errors will decrease the picking pointing and tracking precision rooted from the displacement errors existing between the rotation center of the optical system and the gimbal. And the gimbaled camera system displacement errors are never eliminated but reduced due to the geometric errors consists of geometric tolerances of gimbal structure manufacture installation and vibration coming from working environment. In this paper the gimbal displacement errors in an electro-optically stabilized platform resulting from geometric errors and environment errors were analyzed and shown in detail. The mathematical modal of the gimbal displacement errors created based on multi-body dynamics demonstrated the connection between the gimbal displacement errors and the stabilized platform. Taking a visible light image seeker as a case the diameter is 120mm and the geometric tolerances came from the values of primary design and the vibration data came from the environmental vibration test on the pitch-yaw seeker and at the same time the errors resulting from installation were considered too. Based on calculating the maximum gimbal displacement error will reach to 0.2mm for pitching angle smaller than 40 and yawing angle smaller than 60. However the critical parts have been found out according to the probability theory and the reliability analysis successfully used in the paper and finally the maximum gimbal displacement error reduced to 0.1mm which is acceptable corresponding to the picking pointing and tracking precision for an optical imaging seeker. 2010 Copyright SPIE - The International Society for Optical Engineering.