中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Observational evidence for detrimental impact of inhaled ozone on human respiratory system 期刊论文  OAI收割
BMC PUBLIC HEALTH, 2023, 卷号: 23, 期号: 1, 页码: 929
作者:  
Lu, Jiaying;  Yao, Ling
  |  收藏  |  浏览/下载:18/0  |  提交时间:2023/07/14
Dynamics simulation on control technology for 4WS vehicle steering performance (EI CONFERENCE) 会议论文  OAI收割
ISECS International Colloquium on Computing, Communication, Control, and Management, CCCM 2008, August 3, 2008 - August 4, 2008, Guangzhou, China
Rong-Hui Z.; Hong-Guang J.; Tao C.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
By combining visual preview kinematics  dynamic equation of steering system and 2-DOF steering dynamistic model of 4WS  it can easily attenuate the change and uncertainty of model. 2008 IEEE.  we establish the two degree of freedom model of four-wheel steering vehicle. And then the switching hyper plane is designed by applying the optimal control theory. During the change of parameter is little  4WS steering performance is carried out by adopting sliding variable structure controller. To improve the steering performance of 4WS  especially state variables convergent velocity  Kalman filter for 4WS is designed. And the robust optimal controller is designed for model and parameter is uncertainty. The simulation results show that the controller designed by the proposed method has good robustness  
Synthesis of triphenylphosphine-functionalized dendrimers and application to olefin hydroformylation 期刊论文  OAI收割
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2005, 卷号: 227, 期号: 1-2, 页码: 91-96
作者:  
Huang, YY;  Zhang, HL;  Deng, GJ;  Tang, WJ;  Wang, XY
  |  收藏  |  浏览/下载:22/0  |  提交时间:2019/04/09
PSO based gabor wavelet feature extraction method (EI CONFERENCE) 会议论文  OAI收割
2004 International Conference on Information Acquisition, ICIA 2004, June 21, 2004 - June 25, 2004, Hefei, China
作者:  
Sun H.;  Zhang Y.;  Sun H.
收藏  |  浏览/下载:20/0  |  提交时间:2013/03/25
In this paper  the time of feature extraction is faster. By test in low contrast image  2D continues Gabor wavelets are adopted to realize feature extraction. By optimize Gabor wavelet's parameters of translation  the feasibility and effectiveness of the algorithm are demonstrated by VC++ simulation platform in experiments. 2004 IEEE.  orientation  and scale to make it approximates a local image contour region. The method of Sobel edge detection is used to get the initial position and orientation value of optimization in order to improve the convergence speed. In the wavelet characteristic space  we adopt PSO (particle swarm optimization) Algorithm to identify points on the security border of the system. Comparing to the LM algorithm  it can ensure reliable convergence the target  which can improve convergent speed