中国科学院机构知识库网格系统: 检索

A one-step deconstruction-separation organosolv fractionation of lignocellulosic biomass using acetone/phenoxyethanol/water ternary solvent system 期刊论文 OAI收割
BIORESOURCE TECHNOLOGY, 2021, 卷号: 342, 页码: 8
作者: Chen, Jiazhao; Tan, Xuesong; Miao, Changlin; Zhang, Yu; Yuan, Zhenhong

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Acetone phenoxyethanol water Organosolv fractionation Hansen solubility parameters Taguchi experimental design Biorefinery

Effects of Nb on microstructure and wear resistance of Fe-Cr-C-B surfacing alloy 期刊论文 OAI收割
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2018, 卷号: 25, 期号: 2, 页码: 243-251
作者: Gou Jian; Liu Zhengjun; Jia Hua

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EXPERIMENTAL PARAMETERS MECHANICAL-PROPERTIES BEHAVIOR STEEL IRON Flux-cored wire Surfacing layer Microhardness Microstructure Wear resistance

Influences of aerodynamic loads on hunting stability of high-speed railway vehicles and parameter studies 期刊论文 OAI收割
Acta Mechanica Sinica, 2014, 卷号: 30, 期号: 6, 页码: 889-900
作者: Zeng XH(曾晓辉); Wu H(吴晗); Lai J(赖姜); Sheng HZ(盛宏至)

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Hunting stability Linear critical speed Nonlinear critical speed Aerodynamic loads Suspension parameters Orthogonal experimental design

Retrieval of snow depth in Northeast China using FY-3B/MWRI passive microwave remote sensing data (EI CONFERENCE) 会议论文 OAI收割
Satellite Data Compression, Communications, and Processing VIII, August 12, 2012 - August 13, 2012, San Diego, CA, United states
Ren R.; Gu L.; Chen H.; Cao J.

收藏 | 浏览/下载：146/0 | 提交时间：2013/03/25

Comparing with optical remote sensing techniques passive remote sensing data have been proved to be effective for observing snowpack parameters such as snow depth and snow water equivalent which can penetrate snowpack without clouds interferences. The Microwave Radiation Imager (MWRI) loaded on the Chinese FengYun-3B (FY-3B) satellite is gradually used in the global environment research through November 2011. In this paper we proposed a snow depth retrieval algorithm to estimate snow depth in Northeast China using MWRI passive microwave remote sensing data. A decision tree method of snow identification was firstly designed to distinguish different snow cover conditions in order to eliminate other interference signals. After using the proposed decision tree method the processing results were further used to retrieve the snow depth in Northeast China. Finally the practical snow depth data and the MODIS data were collected for the accuracy assessment of the proposed snow depth retrieval method. The experimental results demonstrated that the RMSE of snow depth used the proposed method was approximately 3 cm in Northeast China. 2012 SPIE.

Improved modulation method for optical module based on compensation technology (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Industrial Control and Electronics Engineering, ICICEE 2012, August 23, 2012 - August 25, 2012, Xi'an, China
Cheng P.; Yu W.-J.; Wang R.-G.; Zheng X.-F.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

In order to increase the performance of the optical module an improved modulation method based on compensation technology is provided. Firstly the development of the optical module is illustrated. Secondly the combination and the main parameters of the optical module are listed. Thirdly in according to the existing module package the method based on compensation technology is elaborated. Finally this method is used in one of internet device and the experimental results show that this method is able to ensure the superior performance of the module. 2012 IEEE.

Moving target detection and classification using spiking neural networks (EI CONFERENCE) 会议论文 OAI收割
2nd Sino-Foreign-Interchange Workshop on Intelligent Science and Intelligent Data Engineering, IScIDE 2011, October 23, 2011 - October 25, 2011, Xi'an, China
作者: Sun H.; Wang Z.; Wang Z.; Wang P.; Sun H.

收藏 | 浏览/下载：51/0 | 提交时间：2013/03/25

We proposed a spiking neural network (SNN) to detect moving target in video streams and classify them into real categorization in this paper. The proposed SNN uses spike trains to encoding information such as the gray value of pixels or feature parameters of the target detects moving target by simulating the visual cortex for motion detection in biological system with axonal delays and classify them into different categorizations according to their distance to categorization's centers found by Hebb learning rule. The experimental results show that the proposed SNN is promising in intelligence computation and applicable in general visual surveillance system. 2012 Springer-Verlag.

Optimum design of laser encoding and decoding on laser beam-riding guidance (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Frontiers of Manufacturing and Design Science, ICFMD 2011, December 11, 2011 - December 13, 2011, Taichung, Taiwan
作者: Yang L.; Yang L.

收藏 | 浏览/下载：39/0 | 提交时间：2013/03/25

Operating principle of laser beam-riding guidance was set forth. Based on the principle of spatial frequency-encoding experimental results demonstrated that the receiver can receive correctly the encoded signal and can decode the signal an optimum laser encoding mode was designed measurement for the missdistance is feasible and all the performance parameters satisfy the demand. (2012) Trans Tech Publications which can transfer continuous laser into pulse laser that represents different position information. Then the mathematic model of deviation from target is built Switzerland. a modified encoding pattern was presented which is composed of two light paths crossed 90. Azimuth information of target is given in orthogonal coordinate system and deviation from target is linearity. As well as characteristic distribution of spatial laser field is analyzed. Corresponding decoding mode was presented by testing in 2 kilometers outdoor

Determination of optimum process parameters in gas-assisted injection molding (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electrical Information and Mechatronics, ICEIM2011, December 23, 2011 - December 25, 2011, Jiaozuo, China
Zi K.; Chen L.

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With finite element analysis software Moldflow numerical simulation and studies about FM truck roof handle were conducted on gas-assisted injection molding process. The influences of melt pre-injection shot gas pressure delay time and melt temperature were observed by using multi-factor orthogonal experimental method. According to the analysis of the factors' impact on evaluation index the optimized parameter combination is obtained. Therefore the optimization design of technological parameters is done. The results show that during the gas-assisted injection molding optimum pre-injection shot is 94% gas pressure is 15MPa delay time is 0.5s melt temperature is 240 C. This study provided a more practical approach for the gas-assisted injection molding process optimization.

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.

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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.

Analyse the angular velocity estimation errors of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者:

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In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter based on high sampling rate was established model and error characteristics were analyzed. With the hypothesis of constant acceleration -- filter and its angular velocity transfer function were deduced. Combing with optimum parameters the effects of and sample rate on the error characteristics were evaluated. According to the requirements of stabilization servo mechanism the frequency characteristics of angular velocity transfer function are analyzed and the filter parameters are designed. The experimental which filter tracked and smoothed sinusoidal signal the results show that when the cutoff frequency of angular velocity loop is 44.9rad/s sampling period and parameters are 0.08ms and 0.01279 respectively the phase leading of angular position is 70. -- filter tracked sinusoidal signals with maximum angular velocity(30/s) and maximum angular acceleration(30/s2) the error of angular velocity estimation was 0.053/s. In the engineering of electro-optical stabilization servo mechanism -- filter can reduce noise effectively and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.