中国科学院机构知识库网格系统: 检索

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	水源水质变化条件下铸铁类供水管网铁释放动态模拟学位论文 OAI收割硕士, 北京: 中国科学院研究生院, 2015 作者: 牛铁柱收藏 \| 浏览/下载：26/0 \| 提交时间：2016/08/03 供水管网，遗传编程，铁释放速率模型，多组分动态水质模型， Water supply network, Genetic Programming, Iron release rate model, Multi-species dynamic water quality model.
	Stochastic and dynamic modeling of MEMS gyroscopes (EI CONFERENCE) 会议论文 OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 The paper introduce two methods to identify the MEMS gyroscope Allan variance method and AR(n) model. Both the method has broadly used in engineering. Through the two method the statistical mathematical properties and dynamic system properties of MEMS gyroscope are proclaimed. 2012 IEEE.
	Three-loop autopilot design and simulation (EI CONFERENCE) 会议论文 OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者: Zhang Y. 收藏 \| 浏览/下载：44/0 \| 提交时间：2013/03/25 In order to realize missile real-time change flight trajectory three-loop autopilot is setting up. The structure characteristics autopilot model and control parameters design method were researched. Firstly this paper introduced the 11th order three-loop autopilot model. With the principle of systems reduce model order the 5th order model was deduced. On that basis open-loop frequency characteristic and closed-loop frequency characteristic were analyzed. The variables of velocity ratio dynamic pressure ratio and elevator efficiency ratio were leading to correct system nonlinear. And then autopilot gains design method were induced. System flight simulations were done and result shows that autopilot gains played a good job in the flight trajectory autopilot satisfied the flight index. 2012 IEEE.
	Dynamic optimum design and analysis of cam wave generator for harmonic gear drive (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Information and Automation, ICIA 2011, June 6, 2011 - June 8, 2011, Shenzhen, China Xiao Q.; Han X.; Jia H. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 Mathematical models of structural optimization were established for the cam wave generator then a conceptual model by integrally taking its static and dynamic performance into consideration which satisfied the model acted by four concentrated forces while the dynamic optimum design was carried out. The topology optimization of the cam wave generator was performed based on artificial material density method was obtained. And the size optimization of the cam wave generator was also executed based on the zero-order method in software Ansys after setting up its parameterized model. The optimized results indicate that its final volume declines to 1284.217mm3 from its 1397.830mm3 which reduced by 42.18% than the original volume of cam (2221.224mm3). Simultaneously the static analysis and modal analysis were implemented and the results show that the static and dynamic performance complies with the design requirements proving that the results of dynamic optimum design are reasonable. The optimized results in paper are realizable in engineering. And the study method provides not only a reference to decreasing design mass and lowering inertia of the cam wave generator but also an important basis of lightweight design of harmonic gear drive. 2011 IEEE.
	Dynamic nonlinear transformation algorithm in LED display panel (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 Chang F.; Zheng X.-F.; Wang R.-G.; Ding T.-F. 收藏 \| 浏览/下载：25/0 \| 提交时间：2013/03/25 In order to ensure high quality display results of LED display panel in all kinds of ambient brightness a dynamic nonlinear transformation algorithm is proposed. First the implementation processes of the method of lock-up table nonlinear transformation are described which is the traditional method of nonlinear transformation. Second an algorithm model of dynamic nonlinear transformation is constructed Third the algorithm realization steps are discussed on the basis of the constructed algorithm model. Finally the relationship between the coefficient of nonlinear transformation and ambient brightness is analyzed. Experimental results indicate regardless of ambient brightness this algorithm is able to ensure that the contrast of LED display panel does not decrease so the display results of LED display panel is good. 2010 IEEE.
	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
	限制因子原理在植物生产量预测中的应用期刊论文 OAI收割生态学杂志, 1991, 期号: 4, 页码: 67-69 岳天祥收藏 \| 浏览/下载：54/0 \| 提交时间：2012/03/21 Principles of Limiting Factors plant production dynamic model.