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| 1 | Coordinated flight control of miniature fixed-wing UAV swarms: methods and experiments显示文摘In this paper,we present our recent advances in both theoretical methods and field experiments for the coordinated control of miniature fixed-wing unmanned aerial vehicle(UAV)swarms.We propose a multi-layered group-based architecture,which is modularized,mission-oriented,and can implement large-scale swarms.To accomplish the desired coordinated formation flight,we present a novel distributed coordinated-control scheme comprising a consensus-based circling rendezvous,a coordinated path-following control for the leader UAVs,and a leader-follower coordinated control for the follower UAVs.The current framework embeds a formation pattern reconfiguration technique.Moreover,we discuss two security solutions(inter-UAV collision avoidance and obstacle avoidance)in the swarm flight problem.The effectiveness of the proposed coordinated control methods was demonstrated in field experiments by deploying up to 21 fixed-wing UAVs. | Xiangke WANG Lincheng SHEN Zhihong LIU Shulong ZHAO Yirui CONG Zhongkui LI Shengde JIA Hao CHEN Yangguan YU Yuan CHANG Yajing WANG | 2019 | Science China(Information Sciences)2019，62，11： | 21 |
| 2 | Experimental investigations on the heat transfer characteristics of micro heat pipe array applied to flat plate solar collector显示文摘This paper introduces a novel flat plate solar collector(FPC) using micro heat pipe array(MHPA) as a key element.To analyze the thermal transfer behavior of flat plate solar collector with micro heat pipe array(MHPA-FPC),an indoor experiment for thermal transfer characteristic of MHPA applied to FPC was conducted by using an electrical heating film to simulate the solar radiation.Different cooling water flow rates,cooling water temperatures,slopes,and contact thermal resistances between the condenser of MHPA and the heat exchanger were tested at different heating powers.The experimental results indicate that MHPA-FPC exhibits the enhanced heat transfer capability with increased cooling water flow rate and temperature.Total thermal resistance has a maximum decline of approximately 10% when the flow rate increases from 180 to 360 L h 1 and 38% when the cooling water temperature increases from 20℃ to 40℃.When the inclination angle of MHPA-FPC exceeds 30°,the slope change has a negligible effect on the heat transfer performance of MHPA-FPC.In addition,contact thermal resistance significantly affects the heat transfer capability of MHPA-FPC.The total thermal resistances lowers to nearly half of the original level when contact material between the condenser of MHPA and the heat exchanger changes from conductive silicone to conductive grease.These results could provide useful information for the optimal design and operation of MHPA-FPC. | DENG YueChao QUAN ZhenHua ZHAO YaoHua WANG LinCheng | 2013 | Science China(Technological Sciences)2013，56，5： | 17 |
| 3 | Asymptotic normality and strong consistency of maximum quasi-likelihood estimates in generalized linear models显示文摘In a generalized linear model with q × 1 responses, the bounded and fixed (or adaptive) p × q regressors Zi and the general link function, under the most general assumption on the minimum eigenvalue of ∑ni=1 ZiZ'i, the moment condition on responses as weak as possible and the other mild regular conditions, we prove that the maximum quasi-likelihood estimates for the regression parameter vector are asymptotically normal and strongly consistent. | YIN Changming, ZHAO Lincheng & WEI Chengdong School of Mathematics and Information Science, Guangxi University, Manning 530004, China Department of Statistics and Finance, University of Science and Technology of China, Hefei 230026, China Department of Mathematics, Guangxi Teacher College, Manning 530001, China | 2006 | Science China Mathematics2006，49，2： | 13 |
| 4 | Strong consistency of maximum quasi-likelihood estimates in generalized linear models显示文摘In a generalized linear model with q × 1 responses, bounded and fixed p × qregressors Zi and general link function, under the most general assumption on the mini-mum eigenvalue of∑ni=1n ZiZ'i, the moment condition on responses as weak as possibleand other mild regular conditions, we prove that with probability one, the quasi-likelihoodequation has a solutionβn for all large sample size n, which converges to the true regres-sion parameterβo. This result is an essential improvement over the relevant results in literature. | YiN Changming ZHAO Lincheng | 2005 | Science China Mathematics2005，48，8： | 13 |
| 5 | Strong convergence of LAD estimates in a censored regression model显示文摘A regression model with a nonnegativity constraint on the dependent variable,known as censored median regression model, is considered. Under some mild conditions, the LAD estimate of the regression coefficient is shown to be strongly consistent.Furthermore, its convergence rate and Bahadur strong representation are also obtained. | FANG Yixin JIN Man ZHAO Lincheng | 2005 | Science China Mathematics2005，48，2： | 6 |
| 6 | Vector Field Based Sliding Mode Control of Curved Path Following for Miniature Unmanned Aerial Vehicles in Winds显示文摘在这份报纸,为在有经常的速度和高度的风中的缩小的无人的天线车辆(UAV ) 的一个弄弯的路径追随者控制算法被开发。对广泛地考虑的线或轨道追随者,不同如果他们是光滑的,要列在后面的弄弯的路径以弧长度参数被定义,它能是直线,轨道, B 花键或任何另外的曲线。建议路径追随者控制算法,由 VF-SMC 说出,把向量域(VF ) 策略与滑动模式控制(SMC ) 正在相结合方法。设计算法保证追踪的错误面对风是一个围住的球,这被证明,在 Lyapunov 方法和 BIBO 稳定性的帮助下。算法在基于 Matlab 的模拟和高保真两个都被验证半物理的模拟。在基于 Matlab 的模拟,建议算法为在不同曲线显示出它的宽用法的直线,轨道和 B 花键被验证。高保真半物理的模拟系统由实际自动驾驶仪控制器,地面车站和 X 飞机飞行组成模拟器在里面环。在半物理的模拟,建议算法彻底地在各种各样的获得参数和风条件下面为 B 花键路径追随者被验证。所有实验在弄弯的路径列在后面和优秀坚韧性弯屈建议算法的骚乱显示出精确性。 | WANG Yajing WANG Xiangke ZHAO Shulong SHEN Lincheng | 2018 | Journal of Systems Science & Complexity2018，31，1： | 6 |
| 7 | Adaptive level of autonomy for human-UAVs collaborative surveillance using situated fuzzy cognitive maps显示文摘Collaborating with a squad of Unmanned Aerial Vehicles(UAVs)is challenging for a human operator in a cooperative surveillance task.In this paper,we propose a cognitive model that can dynamically adjust the Levels of Autonomy(LOA)of the human-UAVs team according to the changes in task complexity and human cognitive states.Specifically,we use the Situated Fuzzy Cognitive Map(Si FCM)to model the relations among tasks,situations,human states and LOA.A recurrent structure has been used to learn the strategy of adjusting the LOA,while the collaboration task is separated into a perception routine and a control routine.Experiment results have shown that the workload of the human operator is well balanced with the task efficiency. | Zhe ZHAO Yifeng NIU Lincheng SHEN | 2020 | Chinese Journal of Aeronautics2020，33，11： | 6 |
| 8 | Approximation by randomly weighting method in censored regression model显示文摘Censored regression ('Tobit') models have been in common use, and their linear hypothesis testings have been widely studied. However, the critical values of these tests are usually related to quantities of an unknown error distribution and estimators of nuisance parameters. In this paper, we propose a randomly weighting test statistic and take its conditional distribution as an approximation to null distribution of the test statistic. It is shown that, under both the null and local alternative hypotheses, conditionally asymptotic distribution of the randomly weighting test statistic is the same as the null distribution of the test statistic. Therefore, the critical values of the test statistic can be obtained by randomly weighting method without estimating the nuisance parameters. At the same time, we also achieve the weak consistency and asymptotic normality of the randomly weighting least absolute deviation estimate in censored regression model. Simulation studies illustrate that the per-formance of our proposed resampling test method is better than that of central chi-square distribution under the null hypothesis. | WANG ZhanFeng WU YaoHua ZHAO LinCheng | 2009 | Science China Mathematics2009，52，3： | 6 |
| 9 | Inference of change-point in single index models显示文摘Single index models are widely used in medicine, econometrics and some other fields. In this paper, we consider the inference of a change point problem in single index models. Based on density-weighted average derivative estimation (ADE) method, we propose a statistic to test whether a change point exists or not. The null distribution of the test statistic is obtained using a permutation technique. The permuted statistic is rigorously shown to have the same distribution in the limiting sense under both null and alternative hypotheses. After the null hypothesis of no change point is rejected, an ADE-based estimate of the change point is proposed under assumption that the change point is unique. A simulation study confirms the theoretical results. | CAO GuanQun WANG ZhanFeng WU YaoHua ZHAO LinCheng | 2008 | Science China Mathematics2008，51，10： | 3 |
| 10 | Enhancement of phenol degradation using immobilized microorganisms and organic modified montmorillonite in a two-phase partitioning bioreactor显示文摘 | Zhao Guanghui Zhou Lincheng Li Yanfeng | 2009 | Journal of Hazardous Materials2009，169，13： | 1 |
| 11 | MODEL SELECTION FOR LOG-LINEAR MODELS OF CONTINGENCY TABLES显示文摘In this paper, we propose an information-theoretic-criterion-based model selection procedure for log-linear model of contingency tables under multinomial sampling, and establish the strong consistency of the method under some mild conditions. An exponential bound of miss detection probability is also obtained. The .selection procedure is modified so that it can be used in practice. Simulation shows that the modified method is valid. To avoid selecting the penalty coefficient in the information criteria, an alteruative selection procedure is given. | ZHAO Lincheng ZHANG Hong(University of Science and Technology of China, Hefei, Anhui 230026. China) | 2003 | Journal of Systems Science & Complexity2003，16，2： | 1 |
| 12 | Moment inequalities and weak convergence for negatively associed sequences显示文摘 | Su Chun Zhao Lincheng Wang Yuebao | 1997 | Science in China (Series A)1997，40，： | 1 |
| 13 | En-hancement of phenol degradation using immobilized mi-croorganisms and organic modified montmorillonite in a two-phase partitioning bioreactor显示文摘 | Guanghui Zhao Lincheng Zhou Yanfeng Li | | 0，，1： | 1 |
| 14 | MAXIMUM SCORE CHANGE-POINT ESTIMATION IN BINARY RESPONSE MODEL显示文摘这篇论文与假设在一个二进制反应模型涉及变化点的评价有条件错误术语中部,给解释变量,是零。我们基于最大的分数功能构造变化点的一个评价并且在一些温和条件下面给它的指数的集中率。 | Lincheng ZHAO ~ Chaofeng KOU Yaohua WU | 2006 | Journal of Systems Science & Complexity2006，19，3： | 1 |
| 15 | Moment inequalities and weak convergence for negatively associated sequences显示文摘 | Su Chun Zhao Lincheng and Wang Yuebao | 1997 | Science in China (Series A)1997，40，： | 1 |
| 16 | Moment inequalities and weak convergence for negatively associated sequences 显示文摘 | SU Chun ZHAO Lincheng WANG Yuebao | 1997 | Science in China Series A : Mathematics1997，40，2： | 1 |
| 17 | STRONG CONSISTENCY OF M-ESTIMATES OF MULTIPLE REGRESSION COEFFICIENTS显示文摘STRONGCONSISTENCYOFM-ESTIMATESOFMULTIPLEREGRESSIONCOEFFICIENTSCHENXiru(GraduateSchooloftheChineseAcademyofSciences,Beijing100... | CHEN Xiru (Graduate School of the Chinese Academy of Sciences, Beijing 100039, China)ZHAO Lincheng (Department of Mathematics, University of Science and Technology of China, Hefei 230026, China) | 1995 | Systems Science and Mathematical Sciences1995，8，1： | 1 |
| 18 | The Experimental Research on Instantaneous Efficiency of PV/T Module Based on Micro Heat Pipe Array 显示文摘 | QUAN Zhenhua WANG Lincheng ZHAO Yaohua | 2013 | Advanced Materials Research2013，，732733： | 1 |
| 19 | Strong convergence of LAD estimates in a censored regression model显示文摘 | Yixin Fang Man Jin Lincheng Zhao | 2005 | Science in China Series A: Mathematics2005，，2： | 1 |
| 20 | Moment inequalities and weak convergence for negatively associated sequences显示文摘 | Chun Su Lincheng Zhao Yuebao Wang | 1997 | Science in China Series A: Mathematics1997，，2： | 1 |
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