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浏览/检索结果: 共21条，第1-10条 帮助

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GLOBAL EXISTENCE AND LARGE TIME BEHAVIOR OF THE QUANTUM BOLTZMANN EQUATION WITH SMALL RELATIVE ENTROPY 期刊论文  OAI收割
KINETIC AND RELATED MODELS, 2022, 页码: 45
作者:  Wang, Yong;  Xiao, Changguo;  Zhang, Yinghui
  |  收藏  |  浏览/下载：21/0  |  提交时间：2023/02/07
Global stability of Boltzmann equation with large external potential for a class of large oscillation data 期刊论文  OAI收割
JOURNAL OF DIFFERENTIAL EQUATIONS, 2019, 卷号: 267, 期号: 6, 页码: 3610-3645
作者:  Wang, Guanfa;  Wang, Yong
  |  收藏  |  浏览/下载：44/0  |  提交时间：2020/01/10
The Boltzmann equation with large-amplitude initial data in bounded domains 期刊论文  OAI收割
ADVANCES IN MATHEMATICS, 2019, 卷号: 343, 页码: 36-109
作者:  Duan, Renjun;  Wang, Yong
  |  收藏  |  浏览/下载：27/0  |  提交时间：2019/03/05
GLOBAL WELL-POSEDNESS OF THE RELATIVISTIC BOLTZMANN EQUATION 期刊论文  OAI收割
SIAM JOURNAL ON MATHEMATICAL ANALYSIS, 2018, 卷号: 50, 期号: 5, 页码: 5637-5694
作者:  Wang, Yong
  |  收藏  |  浏览/下载：21/0  |  提交时间：2019/01/11
A stable excitation amplitude imaging condition for reverse time migration in elastic wave equation 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2013, 卷号: 56, 期号: 10, 页码: 3523-3533
作者:  Zhang Zhi;  Liu You-Shan;  Xu Tao;  Bat Zhi-Ming
  |  收藏  |  浏览/下载：26/0  |  提交时间：2018/09/26
A stable excitation amplitude imaging condition for reverse time migration in elastic wave equation 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2013, 卷号: 56, 期号: 10, 页码: 3523-3533
作者:  Zhang Zhi;  Liu You-Shan;  Xu Tao;  Bat Zhi-Ming
  |  收藏  |  浏览/下载：27/0  |  提交时间：2018/09/26
A stable excitation amplitude imaging condition for reverse time migration in elastic wave equation 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2013, 卷号: 56, 期号: 10, 页码: 3523-3533
作者:  Zhang Zhi;  Liu You-Shan;  Xu Tao;  Bat Zhi-Ming
  |  收藏  |  浏览/下载：25/0  |  提交时间：2018/09/26
A stable excitation amplitude imaging condition for reverse time migration in elastic wave equation 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2013, 卷号: 56, 期号: 10, 页码: 3523-3533
作者:  Zhang Zhi;  Liu You-Shan;  Xu Tao;  Bat Zhi-Ming
  |  收藏  |  浏览/下载：26/0  |  提交时间：2018/09/26
The effect of backlash nonlinear on resonance frequency of electric actuator transmission system (EI CONFERENCE) 会议论文  OAI收割
3rd IEEE International Conference on Advanced Computer Control, ICACC 2011, January 18, 2011 - January 20, 2011, Harbin, China
Han X.; Ge M.; Bai Y.; Jia H.; Ge W.
收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25
In order to study the effect of backlash nonlinear on resonance frequency of electric actuator transmission system  then  Finally  in the premise of meeting the stability  the dynamic equilibrium equation of transmission system with backlash is established  it makes dynamic simulation analysis for the transmission system based on virtual prototype technology  it establishes balanced equation of dynamics system with backlash  the effect of backlash on system natural frequency and resonance frequency  and the theoretical values and simulation values are compared. Theoretical analysis and simulation results show that the theoretical analysis is basically consistent with simulation results when it is zero backlash  and does some theory research and dynamic analysis of backlash nonlinearity and system natural frequency and resonance frequency. First  and the error of theoretical analysis and simulation results is within 10%. Therefore  according to describing function to theoretically model the backlash nonlinear  it can be concluded that considering the transmission system theoretical analysis of backlash nonlinearity is feasible  the relation between describing function and the amount of backlash and input amplitude is analyzed  and it is much closer to the actual system with instructive significance. 2011 IEEE.  
Optical axis stabilization of semi-strapdown seeker based on disturbance observer (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Information and Automation, ICIA 2011, June 6, 2011 - June 8, 2011, Shenzhen, China
Sun G.; Zhu M.; Yin S.; Jia H.
收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25
Based on the kinematics of semi-strapdown seeker  the framework coordinate of the seeker is established. The optical axis stability equation of semi-strapdown seeker is deduced by using attitude transformation matrix. Then  the stability control principle block diagram of semi-strapdown seeker is shown based on the stability equation. The main factors that influence the stabilization precision are pointed out  such as friction disturbance  velocity-measuring noise and missile disturbance. In order to improve the stabilization precision  disturbance observer was proposed in semi-strapdown seeker stability control. The low frequency external disturbance and high frequency velocity measurement noise are effectively restrained by the disturbance observer as shown in hardware-in-loop simulation  and optical axis stabilization precision is improved nearly 20 times and 5 times due to two different frequencies with same amplitude. 2011 IEEE.