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CAS IR Grid
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长春光学精密机械与物... [4]
地质与地球物理研究所 [2]
国家空间科学中心 [1]
上海光学精密机械研究... [1]
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OAI收割 [8]
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会议论文 [4]
期刊论文 [4]
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A novel heat transfer model of a phase change material using in solar power plant
期刊论文
OAI收割
APPLIED THERMAL ENGINEERING, 2018, 卷号: 129, 页码: 557-563
作者:
Mao, Qianjun
;
Chen, Hongzhang
;
Zhao, Yazhou
;
Wu, Hongjun
  |  
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2018/09/26
Concentrating Solar Power Plant
Mathematical Model Of Heat Transfer
Three-dimensional Unsteady State
Cylindrical Coordinate
A novel heat transfer model of a phase change material using in solar power plant
期刊论文
OAI收割
APPLIED THERMAL ENGINEERING, 2018, 卷号: 129, 页码: 557-563
作者:
Mao, Qianjun
;
Chen, Hongzhang
;
Zhao, Yazhou
;
Wu, Hongjun
  |  
收藏
  |  
浏览/下载:40/0
  |  
提交时间:2018/09/26
Concentrating Solar Power Plant
Mathematical Model Of Heat Transfer
Three-dimensional Unsteady State
Cylindrical Coordinate
Estimating the Sea State Bias of Jason-2 Altimeter From Crossover Differences by Using a Three-Dimensional Nonparametric Model
期刊论文
OAI收割
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2016, 卷号: 9, 期号: 11, 页码: 5023-5043
作者:
Jiang, Maofei
;
Xu, Ke
;
Liu, Yalong
;
Wang, Lei
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2017/01/18
Crossover differences
mean wave period (MWP)
radar altimeter
sea state bias (SSB)
three-dimensional (3-D) nonparametric (NP) model
Experiments and finite element simulations on micro-milling of aluminium alloy7050-T7451 (EI CONFERENCE)
会议论文
OAI收割
10th Asia-Pacific Conference on Materials Processing, APCMP 2012, June 14, 2012 - June 17, 2012, Jinan, China
作者:
Li J.
;
Li J.
;
Li J.
;
Zhou J.
;
Wang F.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
The mechanism of micro-milling modeling for aluminum alloy 7050-T745 is to be investigated
and a finite element model for micro-milling that reflects the actual state of the three-dimensional micro-milling is built by adopting the software of ABAQUS/Explicit. Experiment is conducted to verify the validation of the model. Simulated chip morphology in different cutting parameters agrees to the experimental results very well. Based on the FE model
cutting stresses
equivalent plastic strains
temperatures distribution and cutting forces are obtained and analyzed. This provides a good method to investigate the micro milling principles. (2012) Trans Tech Publications.
Linear auto disturbance rejection controller for vector-controlled PMSM drive system (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011, December 16, 2011 - December 18, 2011, Changchun, China
作者:
Zhang K.
;
Zhang K.
;
Zhang K.
;
Zhang K.
收藏
  |  
浏览/下载:36/0
  |  
提交时间:2013/03/25
A high-performance robust controller of permanent-magnet synchronous motor (PMSM) drive with cascade linear auto disturbance rejection controller (LADRC) is proposed. The robust controller combines the simplicity of linear controller and the merit of the auto disturbance rejection controller (ADRC). First
a systematic mathematical model is derived according to the required specifications for the PMSM drive system. Then
for the model
this paper designs the controller that includes three first-order LADRCs. The controller does not rely on the accurate mathematical model of motor. The controller can estimate and compensate the disturbances that include load disturbance and systematic parameters changes by the linear extended state observer (LESO). Simulation results show that compared with conventional PI controller
the proposed approach has strong robustness. In the same load disturbance
the speed fluctuation of the LADRCs accounts for 30% of PI controller. 2011 IEEE.
Nonlinear analysis method for predicting optical surface deformations resulted from assembly process (EI CONFERENCE)
会议论文
OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
Dong W.
;
Yong Y.
;
Guang J.
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2013/03/25
There are three main nonlinear elements in the large mirror assemblies
which are screw pretension
adhesive stress and state changes in the assembly process. The optical shape will be influenced seriously by these factors. But the impacts will not be shown in linear analysis results
because as the simplification
these factors have been ignored. The nonlinear analysis method for predicting optical surface deformations resulted from assembly process is discussed in detail. Take a typical mirror support structure for example
the nonlinear analysis model was established. Comparing the calculation results with the optical shape test
it is illustrated that nonlinear analysis is more accurate and closer to the test result. And according to the simulation result
the bowl-shaped depression which was discovered in the test can also be explained reasonably. 2010 Copyright SPIE - The International Society for Optical Engineering.
Position servo control of a DC electromotor using a hybrid method based on model reference adaptive control (MRAC) (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:
Chen J.
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2013/03/25
This paper dealed with position control problems of a DC motor servo system that had nonlinear friction and was subject to parametric uncertainties
external disturbances
etc. In order to overcame those unfavourable factors mentioned above
a model reference adaptive control method was proposed to regulate the important and main speed loop in the positioning system which was designed with three closed control loop
where a compensatory measure was given so as to counterbalance the friction torque disturbances. In addition
the other two close loops were built in adjusting the position and the current of the servo system respectively that aimed to achieve the fast and precise positioning and increase dynamic stiffness against load disturbances. Experimental results illustrate satisfactory performances in steady state error
load capability
high rapidity and so on. 2010 IEEE.
Theoretical investigation on the one- and two-photon absorption properties for a series of symmetrical charge transfer fluorene-phenylene and fluorene-thiophene derivatives
期刊论文
OAI收割
theochem-j. mol. struct., 2006, 卷号: 772, 期号: 1-3, 页码: 81, 87
马文波
;
吴谊群
;
顾冬红
;
干福熹
收藏
  |  
浏览/下载:1328/242
  |  
提交时间:2009/09/22
two-photon absorption
fluorene derivatives
three-state model
ZINDO/S method