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	Thermoplastic polyimide with good comprehensive performance based on carbazole groups and short flexible linkages 期刊论文 OAI收割 JOURNAL OF POLYMER SCIENCE, 2024, 页码: 7 作者: Du, QiYuan; Chen, WeiPeng; Guo, Hao; Wang, Zhi; Zhao, Li \| 收藏 \| 浏览/下载：39/0 \| 提交时间：2024/05/27 coefficients of thermal expansion dielectric loss high-frequency communication polyimide thermoplastic polyimide
	Research on satellite platform vibration compensation technology for space optical communication (EI CONFERENCE) 会议论文 OAI收割 2012 International Meeting on Opto-Electronics Engineering and Materials Research, OEMR 2012, July 27, 2012 - July 29, 2012, Shenyang, Liaoning, China Han C.; Li X. 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/03/25 The piezo-electric steering control system is used to compensate the vibration of satellite platform. The mathematical model of piezo-electric steering system is built. The adaptive controller based on improved LMS filter algorithm is designed according to this system characteristic. The adaptive delay filter is designed to solve slow convergence speed problem of traditional algorithm. Meanwhile the adaptive delay filter can also compensate phase delay of control circuit. The adaptive deviation filter is introduced and it effectively compensates the vibration deviation which is low frequency and high amplitude. The experimental results show that the remained errors are rad which meets space optical communication requirement and proves that this control scheme is valid and feasible. (2012) Trans Tech Publications Switzerland.
	Compensation of moire fringe sinusoidal deviation in photoelectrical encoder based on tunable filter (EI CONFERENCE) 会议论文 OAI收割 2011 Symposium on Photonics and Optoelectronics, SOPO 2011, May 16, 2011 - May 18, 2011, Wuhan, China 作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：48/0 \| 提交时间：2013/03/25 In order to improve the precision of the absolute photoelectrical encoder a compensating method is put forward which restrains the harmonics in moire fringe signal. After analyzing the relationship between the subdividing error and the sinusoidal index a low-pass digital filter which can make the moire signal satisfy the need of 1024 subdivision is designed. Considering with the fundamental frequency varies with the rotating speed of encoder the tunable filter is adopted whose cutoff frequency is calculated according to the coarse information of the encoder. The simulating results show that the proposed method can improve the sinusoidal index especially at high rotating speed. At last the compensating algorithm is implemented in the terminal of satellite optical communication which needs high resolution. The experimental results show indicate that the developed method is feasible. 2011 IEEE.
	Design and implementation of Electro-optical Countermeasure Hardware-in-the-loop simulation system based on HLA (EI CONFERENCE) 会议论文 OAI收割 2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China 作者: Guo J.; Cui S.; Guo J.; Li Y.; Li Y. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 In this paper the Electro-optical Countermeasure Hardware-in-the-loop simulation system is introduced which highlight to problem: real-time control and acquisition of communications data. We discuss the real-time mechanism by the combination of HLA time management mechanism for real-time data communication and out clock and the double buffer of the acquisition method which ensures high frequency real-time data communications and high data reliability integrity. The tested data is shown that the Electro-optical Countermeasure Hardware-in-the-Ioop simulation system work properly. 2010 IEEE.