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Investigation on vibration induced fretting in degraded contact interface 期刊论文  OAI收割
MICROELECTRONICS RELIABILITY, 2022, 卷号: 139, 页码: 10
作者:  
Li, Qingya;  Gao, Jinchun;  Flowers, George T.;  Yi, Wei;  Jackson, Robert L.
  |  收藏  |  浏览/下载:46/0  |  提交时间:2022/11/21
Investigation on vibration induced fretting in degraded contact interface 期刊论文  OAI收割
MICROELECTRONICS RELIABILITY, 2022, 卷号: 139, 页码: 114974
作者:  
Qingya Li;  Jinchun Gao;  George T. Flowers;  Wei Yi;  Robert L. Jackson
  |  收藏  |  浏览/下载:7/0  |  提交时间:2024/05/31
Effect of periodic high-frequency vibration with rigid spheres added on high solids enzymatic hydrolysis of steam-exploded corn straw 期刊论文  OAI收割
PROCESS BIOCHEMISTRY, 2020, 卷号: 94, 页码: 99-109
作者:  
Zhang, Jintong;  Wang, Lan;  Chen, Hongzhang
  |  收藏  |  浏览/下载:37/0  |  提交时间:2020/07/10
Mechanistic prediction for cutting force in rotary ultrasonic machining of BK7 glass based on probability statistics 期刊论文  OAI收割
ULTRASONICS, 2020, 卷号: 101
作者:  
Lv, Dongxi;  Yan, Chun;  Chen, Gang;  Liu, Dong;  Wu, Xiaofei
  |  收藏  |  浏览/下载:19/0  |  提交时间:2020/12/16
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:23/0  |  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.  
Modulation transfer function in seeker camera limits resulting from missile flutter caused by aerodynamic force (EI CONFERENCE) 会议论文  OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
The imaging quality of seeker in flight mode has been evaluated through analyzing the effects of missile flutter on optical modulation transfer function (MTF) of the optical system. Firstly the data of transverse vibration has been processed to eliminate the trend term caused by the trajectory  then obtained the displacement with two times trapezoidal integration. For the side rotation  the high frequency noise interference in the data has been filtered by using five-point moving average method. Took this model as the quivering rule between the object and the image  and then analyzed the effects of the transverse vibration and the side rotation on imaging quality through MTF. By calculation  the r.m.s value of the image motion caused by missile transverse vibration is 0.026mm  and the side rotation angle is 0.0044 . Through the establishment of two modulation transfer functions (MTF) of image random vibration and linear vibration  the results show that the image quality had declined  and the effect of transverse vibration on image quality is obvious. Through improving the rigidity of the missile and selection of small focal length optical system and shorten the time of exposure can improve the imaging quality of the seeker. 2010 IEEE.