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长春光学精密机械与物... [7]
地质与地球物理研究所 [3]
上海天文台 [1]
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武汉物理与数学研究所 [1]
自动化研究所 [1]
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Application of normal Morlet wavelet transform method to the damped harmonic analysis: On the isolation of the seismic normal modes (S-0(0) and S-0(5)) in time domain
期刊论文
OAI收割
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2019, 卷号: 288, 页码: 26-36
作者:
Duan, Pengshuo
;
Huang, Chengli
  |  
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2019/05/23
Seismic normal mode
NMWT method
Beating-frequency behaviors
Earth's free oscillation
Wavelet analysis
Modeling of frequency-domain scalar wave equation with the average-derivative optimal scheme based on a multigrid-preconditioned iterative solver
期刊论文
OAI收割
JOURNAL OF APPLIED GEOPHYSICS, 2018, 卷号: 148, 页码: 70-82
作者:
Cao, Jian
;
Chen, Jing-Bo
;
Dai, Meng-Xue
  |  
收藏
  |  
浏览/下载:26/0
  |  
提交时间:2018/09/26
Bi-CGSTAB
Multigrid method
Average-derivative optimal scheme
Local mode analysis
Fourier spectral analysis
Modeling of frequency-domain scalar wave equation with the average-derivative optimal scheme based on a multigrid-preconditioned iterative solver
期刊论文
OAI收割
JOURNAL OF APPLIED GEOPHYSICS, 2018, 卷号: 148, 页码: 70-82
作者:
Cao, Jian
;
Chen, Jing-Bo
;
Dai, Meng-Xue
  |  
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2018/09/26
Bi-CGSTAB
Multigrid method
Average-derivative optimal scheme
Local mode analysis
Fourier spectral analysis
Stabilisation of unstable cascaded heat partial differential equation system subject to boundary disturbance
期刊论文
OAI收割
IET CONTROL THEORY AND APPLICATIONS, 2016, 卷号: 10, 期号: 9, 页码: 1027-1039
作者:
Kang, Wen
;
Guo, Bao-Zhu
  |  
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2018/07/30
stability
partial differential equations
observers
variable structure systems
state feedback
control system synthesis
numerical analysis
unstable cascaded heat partial differential equation systems
boundary disturbance
boundary stabilisation
interconnection
unknown input type observer
sliding mode control method
Filippov type solution
state feedback
backstepping transformation
active disturbance rejection control
disturbance estimator
output feedback control
closed loop system
stability
numerical simulations
Studies on iterative algorithms for modeling of frequency-domain wave equation based on multi-grid precondition
期刊论文
OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2015, 卷号: 58, 期号: 3, 页码: 1002-1012
作者:
Cao Jian
;
Chen Jing-Bo
;
Cao Shu-Hong
  |  
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2017/12/18
Multi-grid method
Relaxation factor
Local mode analysis
Average-derivative optimal scheme
Trajectory tracking control for mobile robot based on the fuzzy sliding mode (EI CONFERENCE)
会议论文
OAI收割
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
Xie M.-J.
;
Li L.-T.
;
Wang Z.-Q.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2013/03/25
The trajectory tracking control problem of the uncertain mobile robot with nonholonomic constraints is analyzed. Sliding mode control is presented based on the kinematics models analysis. Switching function of sliding model control is designed according to back-stepping method. Trending law control is selected to improve the system dynamic performance. In order to solve the constant speed problem caused by conventional trending law control
fuzzy control is used to adjust trending speed in the real time. The simulation results demonstrate that the fuzzy sliding mode controller improves the rapidity of trajectory tracking
and reduces the tracking error and the chattering of the control output. 2012 IEEE.
The application of the discrete sliding mode control based on state observer in aerial camera (EI CONFERENCE)
会议论文
OAI收割
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
作者:
Zhang X.
;
Zhang X.
;
Zhang X.
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2013/03/25
A discrete sliding mode control scheme based on state observer is designed for DC torque motor. Aim on the problem of control chattering and steady-state chattering caused by discrete sliding mode control method
adaptive reaching law is proposed Non-chattering and stability are made an analysis. The aerial camera is chosen as an experimental platform and the discrete sliding mode controller with adaptive reaching law is applied to the drawtube system
the value of acceleration can be observed on line. The experiment results show the control scheme can effectively eliminate chattering and also make the drawtube system achieve better dynamical performance. 2011 IEEE.
Electromagnetic radiation test of power driver module in optical tracking system and electromagnetic compatibility (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者:
Yu H.
收藏
  |  
浏览/下载:34/0
  |  
提交时间:2013/03/25
In order to solve the conductive ring module's interference problems
measured the electromagnetic radiation of Power drive module
and used test results analysis the electromagnetic compatibility of the conductive ring
identified and implemented appropriate EMC (electromagnetic compatibility) measures. When optical tracking system working
test equipment can not be fixed. Therefore
from the electromagnetic radiation theory
the paper analyzed the electromagnetic radiation of the power drive module. From it
determine the EMC pre-compliance test method for electromagnetic radiation of power drive module. Based on Test results
calculate the interference voltage of wire in Conductive ring
and then determine the corresponding EMC method. The results show that
when The power drive module Radiate Electromagnetic waves
wires would coupled common mode interference voltage
its frequency is 3MHz
amplitude is about 10V
it would interfered the operation of sensor. By reducing the area of ground loops
used shielded cables
final rule out the interference. 2010 IEEE.
Bootstrap loader design of aerospace payload controller based on TSC695F (EI CONFERENCE)
会议论文
OAI收割
2010 2nd International Conference on Computational Intelligence and Natural Computing, CINC 2010, September 13, 2010 - September 14, 2010, Wuhan, China
Xu W.
;
Piao Y.
收藏
  |  
浏览/下载:38/0
  |  
提交时间:2013/03/25
Anti-radiation TSC695F is usually used as aerospace payload controller in tasks to ensure the aerospace payload having extremely high reliability in abominable space environment. The processor bases on SP ARC V7 architecture with parity check and EDAC
so it could design out high reliable bootstrap loader to guarantee the operation system of VxWorks and application codes loaded correctly and worked stable and high effective. First
this paper put forward the system hardware composition and boot mode which apply for aerospace payload
then it makes clear the related contents of register group initialization
stack initialization
system hardware initialization in bootstrap loader of TSC695F and give out the method to establish TRAP table. That's all through comparing different type of organize mode of program image. After that
compiling of target codes have been described and the kernel code of MakeFile had been given at the same time for reference aimed at the realization of engineering. Although this paper is based on TSC695F
but it could be extended to other embedded system based on SP ARC for bootstrap loader analysis and design
for example
the TSC697 which based on SP ARC V8 with higher performance
so this paper has extremely high engineering value. 2010 IEEE.
Dome design and coupled thermal-mechanical analysis of supersonic missile (EI CONFERENCE)
会议论文
OAI收割
2009 International Conference on Optical Instruments and Technology, OIT 2009, October 19, 2009 - October 22, 2009, Shanghai, China
Xing-qiao A.
;
Qun W.
;
Hong-guang J.
收藏
  |  
浏览/下载:60/0
  |  
提交时间:2013/03/25
A review of high-speed flow pressure and aerodynamic heating effect on Supersonic missile's dome is given. The dome should have excellent properties in optical
mechanical and chemical characteristics. A design of dome on supersonic mode is described according to tactical guide line of a missile. The dome made of quartz which is about 8mm thick and 141mm in window diameter. To check up the reliability of the dome
a reasonable finite element model (FEM) of dome is established
and a thermal-mechanical Analysis to the dome by finite element software NASTRAN has carried on
through these can obtained the distribution of temperature field and stress field when the speed is 2.3Ma. The results indicated that the stress was concentrated in the joint of the dome end and the Missile Section
and the maximum stress was 16.4Mpa. The stress of other nodes was smaller than the allowable stress of quartz glass. Reference to the results of the analysis
a lightweight revision to the dome structural dimension and a new method of dome fixing have put forward
which can reduce the stress concentration. 2009 SPIE.