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| 1 | Fuzzy adaptive robust control for space robot considering the effect of the gravity显示文摘Space robot is assembled and tested in gravity environment, and completes on-orbit service(OOS) in microgravity environment. The kinematic and dynamic characteristic of the robot will change with the variations of gravity in different working condition. Fully considering the change of kinematic and dynamic models caused by the change of gravity environment, a fuzzy adaptive robust control(FARC) strategy which is adaptive to these model variations is put forward for trajectory tracking control of space robot. A fuzzy algorithm is employed to approximate the nonlinear uncertainties in the model, adaptive laws of the parameters are constructed, and the approximation error is compensated by using a robust control algorithm. The stability of the control system is guaranteed based on the Lyapunov theory and the trajectory tracking control simulation is performed. The simulation results are compared with the proportional plus derivative(PD) controller, and the effectiveness to achieve better trajectory tracking performance under different gravity environment without changing the control parameters and the advantage of the proposed controller are verified. | Qin Li Liu Fucai Liang Lihuan Gao Jingfang | 2014 | Chinese Journal of Aeronautics2014，27，6： | 14 |
| 2 | Convergence of the Vlasov-Poisson-Fokker-Planck system to the incompressible Euler equations显示文摘We establish the convergence of the Vlasov-Poisson-Fokker-Planck system to the incompressible Euler equations in this paper. The convergence is rigorously proved on the time interval where the smooth solution to the incompressible Euler equations exists. The proof relies on the compactness argument and the so-called relative-entropy method. | XIAO Ling, LI Fucai & WANG Shu Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100080, China Department of Mathematics, Nanjing University, Nanjing 210093, China College of Applied Sciences, Beijing University of Technology, Beijing 100022, China | 2006 | Science China Mathematics2006，49，2： | 4 |
| 3 | Zero dielectric constant limit to the non-isentropic compressible Euler-Maxwell system显示文摘We investigate the zero dielectric constant limit to the non-isentropic compressible Euler-Maxwell system.We justify this singular limit rigorously in the framework of smooth solutions and obtain the nonisentropic compressible magnetohydrodynamic equations as the dielectric constant tends to zero. | JIANG Song LI FuCai | 2015 | Science China Mathematics2015，58，1： | 3 |
| 4 | Cost of Multicast Logical Key Tree Based on Hierarchical Data Processing显示文摘How to design a multicast key management system with high performance is a hot issue now. This paper will apply the idea of hierarchical data processing to construct a common analytic model based on directed logical key tree and supply two important metrics to this problem: re-keying cost and key storage cost. The paper gives the basic theory to the hierarchical data processing and the analyzing model to multicast key management based on logical key tree. It has been proved that the 4-ray tree has the best performance in using these metrics. The key management problem is also investigated based on user probability model, and gives two evaluating parameters to re-keying and key storage cost. | ZHOU Fucai XU Jian LI Ting | 2006 | Wuhan University Journal of Natural Sciences2006，11，5： | 2 |
| 5 | Optimal mother wavelet-based Lamb wave analyses and damage detection for composite structures显示文摘With the purpose of on-line structural health monitoring,a transducer network was embedded into compos- ite structure to minimize the influence of surroundings.The intrinsic dispersion characteristic of Lamb wave makes the wavelet transform an effective signal processing method for guided waves.To get high precision in feature extrac- tion,an information entropy-based optimal mother wavelet selection approach was proposed,which was used to choose the most appropriate basis function for particular Lamb wave analysis.By using the embedded sensor network and extracting time-of-flight,delamination in the composite laminate was identified and located.The results demon- strate the effectiveness of the proposed methods. | Li Fucai Meng Guang Ye Lin | 2007 | 仪器仪表学报2007，28，10： | 2 |
| 6 | Complete stati- stical characterization of discrete-time LQG and cumulant control显示文摘 | Qian Fucai Gao Iianjun Li Duan | 2012 | IEEE Transactions on Autom-atic Control2012，57，8： | 1 |
| 7 | Optimized Algorithms for Flexible Length-Based Authenticated Skip List显示文摘With the growing trend toward using cloud storage,the problem of efficiently checking and proving data integrity needs more consideration.Many cryptography and security schemes,such as PDP(Provable Data Possession) and POR(Proofs of Retrievability) were proposed for this problem.Although many efficient schemes for static data have been constructed,only a few dynamic schemes exist,such as DPDP(Dynamic Provable Data Possession).But the DPDP scheme falls short when updates are not proportional to a fixed block size.The FlexList-based Dynamic Provable Data Possession(FlexDPDP) was an optimized scheme for DPDP.However,the update operations(insertion,remove,modification)in Flex DPDP scheme only apply to single node at a time,while multiple consecutive nodes operation is more common in practice.To solve this problem,we propose optimized algorithms for multiple consecutive nodes,which including MultiNodes Insert and Verification,MultiNodes Remove and Verification,MultiNodes Modify and Verification.The cost of our optimized algorithms is also analyzed.For m consecutive nodes,an insertion takes O(m) + O(log N) + O(log m),where N is the number of leaf nodes of FlexList,a remove takes O(log/V),and a modification is the same as the original algorithm.Finally,we compare the optimized algorithms with original FlexList through experiences,and the results show that our scheme has the higher efficiency of time and space. | XU Jian LI Mingjie LI Fuxiang YANG Qingsong ZHOU Fucai | 2016 | China Communications2016，13，1： | 1 |
| 8 | Extracting gear fault features using maximal bispectrum显示文摘 | Chen Jin Li Fucai Li Weihua | 2005 | Key Engineering Materials2005，，293294： | 1 |
| 9 | Performance-first con?trol for discrete-time LQG problems显示文摘 | Li Duan Qian Fucai GaoJianjun | 2009 | IEEE Transactions on Automatic Control2009，54，9： | 1 |
| 10 | Variance minimize- ation approach for a class of dual control problems显示文摘 | Li Duan Qian Fucai Fu Peilin | 2002 | IEEE Transactions on Automatic Control2002，47，12： | 1 |
| 11 | Global existence and blow-up for a nonlinear Porous medium equation显示文摘 | LI Fucai XIE Chunhong | 2003 | Applied Mathematics Letters2003，16，： | 1 |
| 12 | Existence and blow- up for a degenerate parabolic quation with nonlocal source显示文摘 | LI Fucai XIE Chunhong | 2003 | Nonlinear Anal2003，52，： | 1 |
| 13 | Modeling a web-based remote monitoring and fault diagnosis system with UML and component technology显示文摘 | Xing Wu Jin Chen Ruqiang Li Weixiang Sun Guicai Zhang Fucai Li | 2006 | Journal of Intelligent Information Systems2006，，1： | 1 |
| 14 | WEB-based remote monitoring and fault diagnosis system显示文摘 | XingWu Jin Chen Ruqiang Li Fucai Li | | 0，，02： | 1 |
| 15 | Variance minimization approach for a class of dual control problems 显示文摘 | Duan Li Fucai Qian Peilin Fu | 2002 | IEEE Transaction on Automatic Control2002，47，12： | 1 |
| 16 | Performance-first control for discrete-time LQG problems显示文摘 | Li Duan Qian Fucai Gao Jianjun | 2009 | IEEE Trans on Automatic Control2009，54，9： | 1 |
| 17 | Modeling a web-based remote monitoring and fault diagnosis system with UML and component technology显示文摘 | Xing Wu Jin Chen Ruqiang Li Weixiang Sun Guicai Zhang Fucai Li | 2006 | Journal of Intelligent Information Systems2006，，1： | 1 |
| 18 | Performance first con- trol for discrete time LQG problems 显示文摘 | Li Duan Qian Fucai Gao Jianjun | 2009 | IEEE Transactions on Automatic Control2009，54，9： | 1 |
| 19 | Optimal nominal dual control for discrete-time LQG problem with unknown parameters显示文摘 | Li Duan Qian Fucai Fu Peilin | 2008 | Automatica2008，44，1： | 1 |
| 20 | Optimal nominal dual control for discrete time LQG problem with unknown param- eters显示文摘 | Li Duan Qian Fucai Fu Peilin | 2008 | Automatica2008，44，1： | 1 |
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