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| 1 | Continuous Sliding Mode Controller with Disturbance Observer for Hypersonic Vehicles显示文摘In this paper, a continuous sliding mode controller with disturbance observer is proposed for the tracking control of hypersonic vehicles to suppress the chattering. The finite time disturbance observer is involved to make that the continuous sliding mode controller has the property of disturbance rejection.Due to continuous terms replacing the discontinuous term of traditional sliding mode control, switching modes of velocity and altitude firstly arrive at small regions with respect to disturbance observation errors. Switching modes keep zero and velocity and altitude asymptotically converge to their reference commands after disturbance observation errors disappear. Simulation results have proved the proposed method can guarantee the tracking of velocity and altitude with continuous sliding mode control laws,and also has the fast convergence rate and robustness. | Chaoxu Mu Qun Zong Bailing Tian Wei Xu | 2015 | IEEE/CAA Journal of Automatica Sinica2015，2，1： | 11 |
| 2 | A weighted LS-SVM approach for the identification of a class of nonlinear inverse systems显示文摘In this paper,a weighted least square support vector machine algorithm for identification is proposed based on the T-S model. The method adopts fuzzy c-means clustering to identify the structure. Based on clustering,the original input/output space is divided into several subspaces and submodels are identified by least square support vector machine(LS-SVM) . Then,a regression model is constructed by combining these submodels with a weighted mechanism. Furthermore we adopt the method to identify a class of inverse systems with immeasurable state variables. In the process of identification,an allied inverse system is constructed to obtain enough information for modeling. Simulation experiments show that the proposed method can identify the nonlinear allied inverse system effectively and provides satisfactory accuracy and good generalization. | SUN ChangYin MU ChaoXu LI XunMing | 2009 | Science in China(Series F)2009，52，5： | 8 |
| 3 | Nitrous oxide reductase gene (nosZ) and N_2O reduction along the littoral gradient of a eutrophic freshwater lake显示文摘Lake littoral zones are characterized by heterogeneity in the biogeochemistry of nutrient elements. This study aimed to explore the relationship between the nitrous oxide reductase gene (nosZ)-encoding denitrifier community composition/abundance and N2O reduction. Five samples (deep sediment, near-transition sediment, transition site, near-transition land and land soil) were collected along a littoral gradient of eutrophic Baiyangdian Lake, North China. To investigate the relationship between the nosZ-encoding denitrifier community structure and N2O reduction, the nosZ-encoding denitrifier community composition/abundance, potential denitrification rate (DNR) and potential N2O production rate (pN2O) were investigated using molecular biological technologies and laboratory incubation experiments. The results showed that the average DNR of sediments was about 25 times higher than that of land soils, reaching 282.5 nmol N/(g dry weight (dw)·hr) and that the average pN2O of sediments was about 3.5 times higher than that of land soils, reaching 15.7 nmol N/(g dw·hr). In the land area, the nosZ gene abundance showed a negative correlation with the N2O/(N2O+N2) ratio, indicating that nosZ gene abundance dominated N2O reduction both in the surface soils of the land area and in the soil core of the transition site.Phylogenetic analysis showed that all the nosZ sequences recovered from sediment clustered closely with the isolates Azospirillum largimobile and Azospirillum irakense affiliated to Rhodospirillaceae in alpha-Proteobacteria, while about 92.3% (12/13) of the nosZ sequences recovered from land soil affiliated to Rhizobiaceae and Bradyrhizobiaceae in α-Proteobacteria. The community composition of nosZ gene-encoding denitrifiers appeared to be coupled with N2O reduction along the littoral gradient. | Chaoxu Wang Guibing Zhu Yu Wang Shanyun Wang Chengqing Yin | 2013 | Journal of Environmental Sciences2013，25，1： | 8 |
| 4 | Advanced control of walking-beam reheating furnace显示文摘Reheating furnace is an important device with complex dynamic characteristics in steel plants. The temperature tracing control of reheating furnace has great importance both to the quality of slabs and energy saving. A model-based control strategy,multivariable constrained control (MCC) for the reheating furnace control is used. With this control method, the furnace is treated as a six-input-six-output general model with loops coupled in nature. Compared with the traditional control, the proposed control strategy gets better temperature tracing accuracy and exhibits some energy saving feature. The simulation results show that the performance of the furnace is greatly improved. | ZhigangChen ChaoXu BinZhang HuiheShao JianminZhang | 2003 | Journal of University of Science and Technology Beijing2003，10，4： | 6 |
| 5 | Characteristic Model-based Discrete-time Sliding Mode Control for Spacecraft with Variable Tilt of Flexible Structures显示文摘In this paper, the finite-time attitude tracking control problem for the spacecrafts with variable tilt of flexible appendages in the conditions of exogenous disturbances and inertia uncertainties is addressed. First the characteristic modeling method is applied to the problem of the spacecraft modeling.Second, a novel adaptive sliding mode surface is designed based on the characteristic model. Furthermore, a discrete-time sliding mode control(DTSMC) law, which makes the tracking error converge into a predefined bound in finite time, is proposed by employing the parameters of characteristic model associated with the sliding mode surface to provide better performances,robustness, faster response, and higher control precision. The designed DTSMC includes the adaptive control architecture and is chattering-free. Finally, digital simulations of a sun synchronous orbit satellite(SSOS) are presented to illustrate effectiveness of the control strategies as well as to verify the practical feasibility of the rapid maneuver mission. | Lei Chen Yan Yan Chaoxu Mu Changyin Sun | 2016 | IEEE/CAA Journal of Automatica Sinica2016，3，1： | 5 |
| 6 | Improved Multi-proxy Signature Scheme without Random Oracles显示文摘 | SUN Ying XU Chunxiang WANG Hua FU Chaoxu | 2011 | Chinese Journal of Electronics2011，20，2： | 4 |
| 7 | Developing nonlinear adaptive optimal regulators through an improved neural learning mechanism显示文摘Optimal feedback design of dynamical systems is a significant topic in automatic control community and information science.As for nonlinear systems,optimal control design always leads to coping with the nonlinear Hamilton-Jacobi-Bellman equation.Nevertheless,it is intractable to acquire the analytic solution of the nonlinear Hamilton-JacobiBellman equation for general nonlinear systems. | Ding WANG Chaoxu MU | 2017 | Science China(Information Sciences)2017，60，5： | 4 |
| 8 | Mathematical modeling of elastic inverted pendulum control system显示文摘Inverted pendulums are important objects of theoretical investigation and experiment in the area of control theory and engineering.The researches concentrate on the rigid finite dimensional models which are described by ordinary differential equations(ODEs).Complete rigidity is the approximation of practical models;Elasticity should be introduced into mathematical models in the analysis of system dynamics and integration of highly precise controller.A new kind of inverted pendulum,elastic inverted pendulum was proposed,and elasticity was considered.Mathematical model was derived from Hamiltonian principle and variational methods,which were formulated by the coupling of partial differential equations(PDE) and ODE.Because of infinite dimensional,system analysis and control of elastic inverted pendulum is more sophisticated than the rigid one. | ChaoXU XinYU | 2004 | 控制理论与应用(英文版)2004，2，3： | 3 |
| 9 | 节段性小肠移植手术中采用自体髂内血管进行血管重建显示文摘背景:本研究旨在评估自体髂内动静脉可否用于异体及自体节段性小肠移植手术的血管重建。方法:2011年1月至2019年1月间34例小肠移植患者纳入研究,其中19例为亲属活体移植,15例为自体移植。收集患者临床资料、血管重建类型及术后并发症进行分析。结果:全组男性20例,女性14例,中位年龄35岁。在34例小肠移植中,22例(64.7%,其中异体移植和自体移植各11例)采用自体髂内动脉脉进行血管重建,12例(35.3%)直接行血管吻合。血管重建耗时(21˘6)min。与直接吻合组相比,血管重建组患者手术总时长(530˘226 vs 440˘116 min,P=0.208)和冷缺血时间(159˘49 vs 125˘66 min,P=0.097)均有延长的趋势,但差异并未达到统计学意义。直接吻合组术后血栓形成发生率较血管重建组有增高的趋势(16.7%vs 0%,P=0.118)。中位随访36.9个月,无一例出现静脉狭窄或假性动脉瘤。19例异体移植患者中,4例(21.1%)发生急性排斥反应,1例(5.2%)出现慢性排斥反应。结论:本组数据显示,采用自体髂内动静脉进行血管重建可有力促进小肠移植的开展,同时有望降低术后血管并发症的风险。 | Guosheng Wu Yinglun Wu Mian Wang Wentong Zhang Chaoxu Liu Tingbo Liang | 2021 | Gastroenterology Report2021，9，4： | 2 |
| 10 | Manganese superoxide dismutase induces migration and invasion of tongue squamous cell carcinoma via H 2 O 2 -dependent Snail signaling显示文摘 | Zhonghua Liu Su Li Yuchen Cai Anxun Wang Qianting He Chaoxu Zheng Tingting Zhao Xueqiang Ding Xiaofeng Zhou | 2012 | Free Radical Biology and Medicine2012，，1： | 1 |
| 11 | A novel ant colony system based on traditional Chinese medicine theory显示文摘 | Wang Chaoxue Cui Yingan Li Xue etal | 2006 | Inter- national Journal of Computer Science and Network Security2006，6，5： | 1 |
| 12 | Effect of inorganic phase on polymeric relaxation dynamics in PMMA/silica hybrids studied by dielectric analysis显示文摘 | Li Chaoxu Wu Juntao Zhao Jun | 2004 | European Polymer Journal2004，40，8： | 1 |
| 13 | A rough set-based hierarchical clustering algorithm for categorical data 显示文摘 | Chen Duo Cui Duwu Wang Chaoxue | 2006 | International Journal of information Technology2006，12，3： | 1 |
| 14 | Biological activity of the essential oil from the leaves of Piper sarmentosum Roxb. (Piperaceae) and its chemical constituents on Brontispa longissima (Gestro) (Coleoptera: Hispidae)显示文摘 | Weiquan Qin Shanchun Huang Chaoxu Li Siting Chen Zhengqiang Peng | 2009 | Pesticide Biochemistry and Physiology2009，，3： | 1 |
| 15 | Study of the amorphous phase in semicrystalline poly(ethylene terephthalate)via physical aging显示文摘 | WANG JIJUN LI CHAOXU | 2002 | Macromolecules2002，35，8： | 1 |
| 16 | A Novel Genetic Algorithm Based on Gene Therapy Theory 显示文摘 | Wang chaoxue Cui Duwu Wan Dingsheng | 2006 | Transactions of the Institute of Measurement and Control2006，28，3： | 1 |
| 17 | Expression of vascular endothelial growth factor - C and its clinical significance in the expression of vascular endothelialgrowth factor 显示文摘 | Hong Yong fan Ping Qiu Chaoxue | 2012 | and its clinical significance in three negative breast cancer2012，28，14： | 1 |
| 18 | A novel ant colony system based on delauney triangu- lation and self-adaptive mutation for TSP显示文摘 | WANG Chaoxue CUI Duwu ZHANG Yikun | 2006 | Interna- tional Journal of Information Technology2006，12，3： | 1 |
| 19 | A novel ant colony system based on cure mechanism of traditional chinese medicine for TSP显示文摘 | Wang Chaoxue Cui Duwu Zhang Yikun | 2006 | International Journal of Computer Science and Network Security2006，6，5： | 1 |
| 20 | Strength Characteris-tics and Mechanisms of Salt-Rich Soil-Cement显示文摘 | Haofeng Xing Xiaoming Yang ChaoXu Guanbao Ye | 2009 | Engineering Geology2009，，103： | 1 |
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