中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共5条,第1-5条 帮助

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Assessing the integrity of soil erosion in different patch covers in semi-arid environment 期刊论文  OAI收割
JOURNAL OF HYDROLOGY, 2019, 卷号: 571, 页码: 71-86
作者:  
Zhou, Ji;  Fu, Bojie;  Yan, Dongchun;  Lu, Yihe;  Wang, Shuai
  |  收藏  |  浏览/下载:88/0  |  提交时间:2019/04/22
Grassland species respond differently to altered precipitation amount and pattern 期刊论文  OAI收割
ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 2017, 卷号: 137, 页码: 166-176
作者:  
Zhang, Bin;  Zhu, Jianjun;  Pan, Qingmin;  Liu, Yanshu;  Chen, Shiping
  |  收藏  |  浏览/下载:16/0  |  提交时间:2022/03/28
Dissecting Solidago canadensis-soil feedback in its real invasion 期刊论文  OAI收割
ECOLOGY AND EVOLUTION, 2017, 卷号: 7, 期号: 7, 页码: 2307-2315
作者:  
Dong, Li-Jia;  Yang, Jian-Xia;  Yu, Hong-Wei;  He, Wei-Ming
  |  收藏  |  浏览/下载:12/0  |  提交时间:2022/03/28
The indirect effects of habitat disturbance on the bird communities in a tropical African forest 期刊论文  OAI收割
BIODIVERSITY AND CONSERVATION, 2015, 卷号: 24, 期号: 12, 页码: 3083-3107
Mammides, Christos; Schleuning, Matthias; Boehning-Gaese, Katrin; Schaab, Gertrud; Farwig, Nina; Kadis, Costas; Coulson, Tim
收藏  |  浏览/下载:40/0  |  提交时间:2015/11/19
Modeling and variable structure control of a vehicle flexible manipulator (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
作者:  
Wang Z.;  Li Y.;  Li Y.;  Li Y.;  Li Y.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
In this paper  the mathematical modeling and the application of a new trajectory tracking control technique for hydraulic-driven rigid-flexible manipulator are concerned. To get a closer dynamic behavior of the real system  both the flexible manipulator linkage and the actuator dynamics are considered. The exact dynamic model of flexible manipulator is derived using Lagrange principle and assumed modes method. The partial decoupled dynamic equation is derived using nonlinear decoupling feedback control method. The whole dynamic model is established by a driven Jacobin matrix  which represents the coupling between hydraulic servo system and mechanical system. A variable structure controller with inverse dynamics is designed for trajectory tracking. To weaken the chattering of control signal  saturation function is used to instead of sign function. The experimental results investigate the effectiveness of the proposed approaches. 2012 IEEE.