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| 1 | Adaptive Sliding Mode Control for Re-entry Attitude of Near Space Hypersonic Vehicle Based on Backstepping Design显示文摘Combining sliding mode control method with radial basis function neural network(RBFNN), this paper proposes a robust adaptive control scheme based on backstepping design for re-entry attitude tracking control of near space hypersonic vehicle(NSHV) in the presence of parameter variations and external disturbances. In the attitude angle loop, a robust adaptive virtual control law is designed by using the adaptive method to estimate the unknown upper bound of the compound uncertainties. In the angular velocity loop, an adaptive sliding mode control law is designed to suppress the effect of parameter variations and external disturbances. The main benefit of the sliding mode control is robustness to parameter variations and external disturbances. To further improve the control performance, RBFNNs are introduced to approximate the compound uncertainties in the attitude angle loop and angular velocity loop, respectively. Based on Lyapunov stability theory, the tracking errors are shown to be asymptotically stable. Simulation results show that the proposed control system attains a satisfied control performance and is robust against parameter variations and external disturbances. | Jingmei Zhang Changyin Sun Ruimin Zhang Chengshan Qian | 2015 | IEEE/CAA Journal of Automatica Sinica2015，2，1： | 30 |
| 2 | Second-order terminal sliding mode control for hypersonic vehicle in cruising flight with sliding mode disturbance observer显示文摘This paper focuses on the design of nonlinear robust controller and disturbance observer for the longitudinal dynamics of a hypersonic vehicle (HSV) in the presence of parameter uncertainties and external disturbances. First, by combining terminal sliding mode control (TSMC) and second-order sliding mode control (SOSMC) approach, the second-order terminal sliding control (2TSMC) is proposed for the velocity and altitude tracking control of the HSV. The 2TSMC possesses the merits of both TSMC and SOSMC, which can provide fast convergence, continuous control law and high-tracking precision. Then, in order to increase the robustness of the control system and improve the control performance, the sliding mode disturbance observer (SMDO) is presented. The closed-loop stability is analyzed using the Lyapunov technique. Finally, simulation results illustrate the effectiveness of the proposed method, as well as the improved overall performance over the conventional sliding mode control (SMC). | Ruimin ZHANG Changyin SUN Jingmei ZHANG Yingjiang ZHOU | 2013 | 控制理论与应用(英文版)2013，11，2： | 22 |
| 3 | Mutant Resources for the Functional Analysis of the Rice Genome显示文摘瑞斯是世界范围的最重要的庄稼之一,作为主食食物并且作为为 genomic 研究的一个模型系统。为了系统地把功能分到所有,在米饭染色体预言了基因,很多米饭异种线包括 T-DNA 插入创造的那些,标注的 Ds/dSpm,标注的 Tos17,和化学药品 / 照耀的 mutagenesis,被组在全世界产生了。在这研究,我们为米饭染色体的功能的分析考察了变异的资源的当前的地位。246 566 flanking 顺序的一个总数与 T-DNA, Ds/dSpm,或 Tos17 插入从米饭异种图书馆标注被收集了并且分析。在 211 470 唯一的点击之中,插入的结果表演在遗传因子的区域报道定位了因为 68.16% ,和 60.49% 原子基因包含至少一插入。当前,在米饭的 57% non-transposable-element-related 基因有 insertional 标签。另外, chemical/irradiation-induced 米饭异种图书馆为变异的地点的鉴定贡献了很多到基因鉴定和新技术。在这评论,我们总结这些工具怎么被用来产生异种的一个大集合。另外,我们讨论经典变化策略的优点。为了为基因在米饭,指向的 DNA,和象 RiceFox 一样的新资源完成 mutagenesis 的浸透,功能的鉴定从米饭异种资源的未来产生的一个观点被考察。 | Nili Wang Tuan Long Wen Yao Lizhong Xiong Qifa Zhang Changyin Wu | 2013 | Molecular Plant2013，6，3： | 21 |
| 4 | Non-fragile switching tracking control for a flexible air-breathing hypersonic vehicle based on polytopic LPV model显示文摘This article proposes a linear parameter varying (LPV) switching tracking control scheme for a flexible air-breathing hypersonic vehicle (FAHV). First, a polytopic LPV model is constructed to represent the complex nonlinear longitudinal model of the FAHV by using Jacobian linearization and tensor-product (T-P) model transformation approach. Second, for less conservative controller design purpose, the flight envelope is divided into four sub-regions and a non-fragile LPV controller is designed for each parameter sub-region. These non-fragile LPV controllers are then switched in order to guarantee the closed-loop FAHV system to be asymptotically stable and satisfy a specified performance criterion. The desired non-fragile LPV switching controller is found by solving a convex constraint problem which can be efficiently solved using available linear matrix inequality (LMI) techniques, and robust stability analysis of the closed-loop FAHV system is verified based on multiple Lypapunov functions (MLFs). Finally, numerical simulations have demonstrated the effectiveness of the proposed approach. | Huang Yiqing Sun Changyin Qian Chengshan Wang Li | 2013 | Chinese Journal of Aeronautics2013，26，4： | 19 |
| 5 | Rice Functional Genomics Research: Past Decade and Future显示文摘瑞斯(Oryza sativa ) 是为世界范围的超过 35 亿个人的主要主食食物庄稼。在米饭理解复杂农学的特点的规章的机制为全球食物安全是批评的。瑞斯也是为单子叶植物的 genomics 研究的模型植物。由于功能的 genomic 技术的快速的发展,控制重要农学的特点的超过 2000 基因被克隆,并且他们的分子的生物机制也是部分描绘了。这里,我们简短在米饭考察进展功能的 genomics 研究在过去的 10 年期间包括功能的 genomics 平台的一篇摘要,基因 ? 并且调整重要农学的特点的分子的规章的网络,并且 ? 为基因鉴定的最新发达的工具。在功能的 genomics 研究做的这些成就将极大地便于发展 ? 绿超级米饭。我们也讨论未来挑战和米饭的前景功能的 genomics 研究。 | Yan Li Jinghua Xiaot Lingling Chen Xuehui Huang Zhukuan Cheng Bin Han Qifa Zhang Changyin Wu | 2018 | Molecular Plant2018，11，3： | 14 |
| 6 | Adaptive fault-tolerant controller design for airbreathing hypersonic vehicle with input saturation显示文摘The problem of fault-tolerant control is discussed for the longitudinal model of an airbreathing hypersonic vehicle(AHV) with actuator faults and external disturbances.Firstly,a fault-tolerant control strategy is presented for the longitudinal model of an AHV,which guarantees that velocity and altitude track their reference trajectories at an exponential convergence rate.However,this method needs to know the minimum value of the actuator efficiency factor and the upper bound of the external disturbances,which makes it not easy to implement.Then an improved adaptive fault-tolerant control scheme is proposed,where two adaptive laws are employed to estimate the upper bound of the external disturbances and the minimum value of the actuator efficiency factor,respectively.Secondly,the problem of designing a control scheme with control constraints is further considered,and a new adaptive fault-tolerant control strategy with input saturation is designed to guarantee that velocity and altitude track their reference trajectories.Finally,simulation results are given to show the effectiveness of the proposed methods. | Haibin Sun Shihua Li Changyin Sun | 2013 | Journal of Systems Engineering and Electronics2013，24，3： | 12 |
| 7 | On modeling and control of a flexible air-breathing hypersonic vehicle based on LPV method显示文摘这篇文章开发 polytopic 变化的线性参数(LPV ) 模型和礼品为灵活呼吸空气的极超音速的车辆(FAHV ) 的非易碎的 H 2 安排获得的控制。首先, FAHV 的 polytopic LPV 模型能被使用 Jacobian linearization 和张肌产品(TP ) 模型转变途径获得,模拟确认说明 polytopic LPV 模型捕获原来的非线性的系统的本地非线性。基于发达 polytopic LPV 模型,第二,一个非易碎的 gainscheduled 控制方法被建议以便减少在控制器实现遇到的脆弱,有线性矩阵不平等( LMI )的一个凸的优化问题限制为设计速度和高度追踪控制器被提出,它保证 H 2 控制性能索引。最后,数字模拟表明了建议途径的有效性。 | Changyin SUN Yiqing HUANG Chengshan QIAN Li WANG | 2012 | Frontiers of Electrical and Electronic Engineering in China2012，7，1： | 12 |
| 8 | Self-triggered Consensus Control for Linear Multi-agent Systems With Input Saturation显示文摘In this paper, we study the consensus problem for a class of linear multi-agent systems(MASs) with consideration of input saturation under the self-triggered mechanism. In the context of discrete-time systems, a self-triggered strategy is developed to determine the time interval between the adjacent triggers. The triggering condition is designed by using the current sampled consensus error. Furthermore, the consensus control protocol is designed by means of a state feedback approach. It is shown that the considered multi-agent systems can reach consensus with the presented algorithm. Some sufficient conditions are proposed in the form of linear matrix inequalities(LMIs) to show the positively invariant property of the domain of attraction(DOA). Moreover, some sufficient conditions of controller synthesis are provided to enlarge the volume of the DOA and obtain the control gain matrix. A numerical example is simulated to demonstrate the effectiveness of the theoretical analysis results. | Yanxu Su Qingling Wang Changyin Sun | 2020 | IEEE/CAA Journal of Automatica Sinica2020，7，1： | 11 |
| 9 | Comparison of Persulfate Activation and Fenton Reaction in Remediating an Organophosphorus Pesticides-Polluted Soil显示文摘Organophosphorus pesticides(OPs) are one of the most regular pollutants and frequently detected in the contaminated sites,so developing an efficient method for the treatment of OPs is highly required. The aim of the present study was to compare the effectiveness of persulfate(PS) activation and Fenton reaction in remediating the soil polluted with OPs. The polluted soil used in this study was sampled from an abandoned insecticide factory in Nantong, Jiangsu Province of China, mainly containing chloropyrifos(CP) and 4-bromo-2-chlorophenol(BCP, the raw material of profenofos) with total concentration of about 30 000 mg kg^(-1). The results showed that both BCP and CP were efficiently degraded by base activation of PS, and increasing the ratio of Na OH/PS enhanced CP degradation, but slightly decreased BCP degradation. The greatest degradation rates for CP and BCP were 92% and 97%, respectively,with 7.0 mol L^(-1) Na OH and 0.21 mol L^(-1) PS and a soil-to-liquid ratio of 1:1. Furthermore, ferrous iron activation of PS also degraded BCP efficiently, but only 60% of CP was degraded under the same reaction conditions. These results indicated that base activation of PS was more feasible than Fe^(2+) activation and Fenton reaction in remediating the soil polluted with OPs. The high degradation rate for CP may be linked to the initial hydrolyzation of CP by base to 3,5,6-trichloro-2-pyridinol, which can be further rapidly degraded by free radicals generated from base activation of PS. | ZHU Changyin ZHU Fengxiao WANG Fuwang GAO Juan FAN Guangping ZHOU Dongmei FANG Guodong | 2017 | Pedosphere2017，27，3： | 11 |
| 10 | Polytopic LPV modeling and gain-scheduled switching control for a flexible air-breathing hypersonic vehicle显示文摘A novel gain-scheduled switching control method for the longitudinal motion of a flexible air-breathing hypersonic vehicle (FAHV) is proposed.Firstly,velocity and altitude are selected as scheduling variables,a polytopic linear parameter varying(LPV) model is developed to represent the complex nonlinear longitudinal dynamics of the FAHV.Secondly,based on the obtained polytopic LPV model,the flight envelope is divided into four smaller subregions, and four gain-scheduled controllers are designed for these parameter subregions.Then,by the defined switching characteristic function,these gain-scheduled controllers are switched in order to guarantee the closed-loop FAHV system to be asymptotically stable and satisfy a given tracking error performance criterion.The condition of gain-scheduled switching controller synthesis is given in terms of linear matrix inequalities(LMIs) which can be easily solved by using standard software packages.Finally,simulation results show the effectiveness of the presented method. | Yiqing Huang Changyin Sun Chengshan Qian Jingmei Zhang Li Wang | 2013 | Journal of Systems Engineering and Electronics2013，24，1： | 10 |
| 11 | Adaptive Control Based on Neural Networks for an Uncertain 2-DOF Helicopter System With Input Deadzone and Output Constraints显示文摘In this paper, a study of control for an uncertain2-degree of freedom(DOF) helicopter system is given. The2-DOF helicopter is subject to input deadzone and output constraints. In order to cope with system uncertainties and input deadzone, the neural network technique is introduced because of its capability in approximation. In order to update the weights of the neural network, an adaptive control method is utilized to improve the system adaptability. Furthermore, the integral barrier Lyapunov function(IBLF) is adopt in control design to guarantee the condition of output constraints and boundedness of the corresponding tracking errors. The Lyapunov direct method is applied in the control design to analyze system stability and convergence. Finally, numerical simulations are conducted to prove the feasibility and effectiveness of the proposed control based on the model of Quanser's 2-DOF helicopter. | Yuncheng Ouyang Lu Dong Lei Xue Changyin Sun | 2019 | IEEE/CAA Journal of Automatica Sinica2019，6，3： | 9 |
| 12 | 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 |
| 13 | An Adaptive Strategy via Reinforcement Learning for the Prisoner's Dilemma Game显示文摘The iterated prisoner's dilemma(IPD) is an ideal model for analyzing interactions between agents in complex networks. It has attracted wide interest in the development of novel strategies since the success of tit-for-tat in Axelrod's tournament. This paper studies a new adaptive strategy of IPD in different complex networks, where agents can learn and adapt their strategies through reinforcement learning method. A temporal difference learning method is applied for designing the adaptive strategy to optimize the decision making process of the agents. Previous studies indicated that mutual cooperation is hard to emerge in the IPD. Therefore, three examples which based on square lattice network and scale-free network are provided to show two features of the adaptive strategy. First, the mutual cooperation can be achieved by the group with adaptive agents under scale-free network, and once evolution has converged mutual cooperation, it is unlikely to shift. Secondly, the adaptive strategy can earn a better payoff compared with other strategies in the square network. The analytical properties are discussed for verifying evolutionary stability of the adaptive strategy. | Lei Xue Changyin Sun Donald Wunsch Yingjiang Zhou Fang Yu | 2018 | IEEE/CAA Journal of Automatica Sinica2018，5，1： | 8 |
| 14 | 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 |
| 15 | A new self-learning optimal control laws for a class of discrete-time nonlinear systems based on ESN architecture显示文摘A novel self-learning optimal control method for a class of discrete-time nonlinear systems is proposed based on iteration adaptive dynamic programming(ADP)algorithm.It is proven that the iteration costate functions converge to the optimal one,and a detailed convergence analysis of the iteration ADP algorithm is given.Furthermore,echo state network(ESN)architecture is used as the approximator of the costate function for each iteration.To ensure the reliability of the ESN approximator,the ESN mean square training error is constrained in the satisfactory range.Two simulation examples are given to demonstrate that the proposed control method has a fast response speed due to the special structure and the fast training process. | SONG RuiZhuo XIAO WenDong SUN ChangYin | 2014 | Science China(Information Sciences)2014，57，6： | 4 |
| 16 | Mode Selection and Resource Allocation for Deviceto-Device Communications in 5G Cellular Networks显示文摘To meet the increasing demand of wireless broadband applications in future 5G cellular networks, Device-to-Device(D2D) communications serve as a candidate paradigm to improve spectrum efficiency. Considering the challenges after D2 D transmission is introduced for future cellular networks, this paper deals with mode selection and resource allocation issues related with D2 D communications. First, we propose a mode selection scheme which aims at guaranteeing the transmission of cellular users and also considering the potential interference. We analyze the condition under which D2 D underlay mode should be used. Second, we answer the question of 'how to effectively reuse cellular resource once underlaying mode is adopted'. We further present a resource allocation scheme that focuses on minimizing overall interference as well as a power control method to improve the performance of D2 D systems. Simulation results demonstrate that system parameters greatly affect the switching condition of mode selection and probability of choosing underlay mode. Furthermore, for D2 D underlaying scenario, the proposed resource allocation algorithm guarantees the transmission of cellular users with consideration of transmission requirements of D2 D users. Hence, the proposed scheme can achieve better user experience. | Fan Jiang Benchao Wang Changyin Sun Yao Liu Rong Wang | 2016 | China Communications2016，13，6： | 4 |
| 17 | Effort and Contribution of T-DNA Insertion Mutant Library for Rice Functional Genomics Research in China:Review and Perspective显示文摘With the completion of the rice (Oryza sativa L.) genome-sequencing project,the rice research community proposed to characterize the function of every predicted gene in rice by 2020.One of the most effective and high-throughput strategies for studying gene function is to employ genetic mutations induced by insertion elements such as T-DNA or transposons.Since 1999,with support from the Ministry of Science and Technology of China for Rice Functional Genomics Programs,large-scale T-DNA insertion mutant populations have been generated in Huazhong Agricultural University,the Chinese Academy of Sciences and the Chinese Academy of Agricultural Sciences.Currently,a total of 372,346 mutant lines have been generated,and 58,226 T-DNA or Tos17 flanking sequence tags have been isolated.Using these mutant resources,more than 40 genes with potential applications in rice breeding have already been identified.These include genes involved in biotic or abiotic stress responses,nutrient metabolism,pollen development,and plant architecture.The functional analysis of these genes will not only deepen our understanding of the fundamental biological questions in rice,but will also offer valuable gene resources for developing Green Super Rice that is high-yielding with few inputs even under the poor growth conditions of many regions of Africa and Asia. | Yuxiao Chang Tuan Long Changyin Wu | 2012 | Journal of Integrative Plant Biology2012，54，12： | 4 |
| 18 | Adaptive Nonsingular Terminal Sliding Mode Control Design for Near Space Hypersonic Vehicles显示文摘This paper presents an adaptive nonsingular terminal sliding mode approach for the attitude control of near space hypersonic vehicles(NSHV) in the presence of parameter uncertainties and external disturbances. Firstly, a novel nonsingular terminal sliding surface is developed and its finitetime convergence is analyzed. Then, an adaptive nonsingular terminal sliding mode control law is proposed, which is chattering free. In the proposed approach, all parameter uncertainties and external disturbances are lumped into one term, which is estimated by an adaptive uncertainty estimation for eliminating the boundary requirement needed in the conventional control design. Subsequently, stability of the closed-loop system is proven based on Lyapunov theory. Finally, the proposed approach is applied to the attitude control design for NSHV. Simulation results show that the proposed approach attains a satisfactory performance in the presence of parameter uncertainties and external disturbances. | Ruimin Zhang Lu Dong Changyin Sun | 2014 | IEEE/CAA Journal of Automatica Sinica2014，1，2： | 4 |
| 19 | Phosphorylation of OsFD1 by OsCIPK3 promotes the formation of RFT1-containing florigen activation complex for long-day flowering in rice显示文摘Heading date is a critical trait that determines the regional adaptability and grain productivity of many crops.Although rice is a facultative short-day plant,its domestication led to the Ghd7-Ehd1-Hd3a/RFT1 pathway for adaptation to long-day conditions(LDs).The formation of the'florigen activation complex'(FAC)containing florigen Hd3a has been characterized.However,the molecular composition of the FAC that contains RFT1 for long-day flowering is unclear.We show here that RFT1 forms a ternary FAC with 14-3-3 proteins and OsFD1 to promote flowering under LDs.We identified a calcineurin B-like-interacting protein kinase,OsCIPK3,which directly interacts with and phosphorylates OsFD1,thereby facilitating the localization of the FAC to the nucleus.Mutation in OsCIPK3 results in a late heading date under LDs but a normal heading date under short-day conditions.Collectively,our results suggest that OsCIPK3 phosphorylates OsFD1 to promote RFT1-containing FAC formation and consequently induce flowering in rice under LDs. | Qiang Peng Chunmei Zhu Tao Liu Shuo Zhang Shijing Feng Changyin Wu | 2021 | Molecular Plant2021，14，7： | 4 |
| 20 | miR-378 attenuates muscle regeneration by delaying satellite cell activation and differentiation in mice显示文摘骨胳的肌肉质量和动态平衡大部分在出生后的肌肉开发和新生期间取决于成年肌肉干细胞(卫星房间) 。我们最近证明 miR-378 的全球 overexpression 显著地在老鼠减少了骨胳的肌肉质量。在当前的学习,我们使用了 miR-378 转基因(Tg ) 估计的老鼠在里面 vivo 骨胳的肌肉生长和新生上的 miR-378 的功能的效果。骨胳的肌肉纸巾的代表性的分析证明 myofibers 的数字和尺寸比在野类型的老鼠在 miR-378 Tg 老鼠是显著地更低的。在 miR-378 Tg 老鼠的稀释导致 cardiotoxin 的肌肉新生被发现与推迟的卫星房间激活和区别被联系。机械学地, miR-378 被发现直接在 vitro 并且在 vivo 在肌肉房间指向 Igf1r。这些 miR-378 Tg 老鼠可以为在人在联系肌肉的疾病调查骨胳的肌肉的生理、病理学的角色提供一个模型,特别地在 sarcopenia。 | Ping Zeng Wanhong Han Changyin Li Hu Li Dahai Zhu Yong Zhang Xiaohong Liu | 2016 | Acta Biochimica et Biophysica Sinica2016，48，9： | 4 |
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