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| 1 | Characteristic model based control of the X-34 reusable launch vehicle in its climbing phase显示文摘In this paper, a characteristic model based longitudinal control design for the trans-aerosphere vehicle X-34 in its transonic and hypersonic climbing phase is proposed. The design is based on the dynamic characteristics of the vehicle and the curves it is to track in this climbing phase. Through a detailed analysis of the aerodynamics and vehicle dynamics during this climbing phase, an explicit description of the tracking curve for the flight path angle is derived. On the basis of this tracking curve, the tracking curves for the two short-period variables, the angle of attack and the pitch rate, are designed. An all-coefficient adaptive controller is then designed, based on the characteristic modeling, to cause these two short-period variables to follow their respective tracking curves. The proposed design does not require multiple working points, making the design procedure simple. Numerical simulation is performed to validate the performance of the controller. The simulation results indicate that the resulting control law ensures that the vehicle climbs up successfully under the restrictions on the pitch angle and overloading. | MENG Bin WU HongXin LIN ZongLi LI Guo | 2009 | Science in China(Series F)2009，52，11： | 12 |
| 2 | Control design in the presence of actuator saturation:from individual systems to multi-agent systems显示文摘The importance of taking actuator saturation into consideration in the design of practical control systems has been well recognized.Two facts are clear.Actuator saturation reduces the anticipated closed-loop performance of the closed-loop system,and in a severe situat ion,may cause loss of closed-loop stability. | Zongli LIN | 2019 | Science China(Information Sciences)2019，62，2： | 11 |
| 3 | Robust semi-global leader-following practical consensus of a group of linear systems with imperfect actuators显示文摘This paper considers the problem of semi-global leader-following consensus of a multi-agent system whose agent dynamics are represented by linear systems. The input output characteristics of the follower agent actuators, such as those of saturation and dead-zone, are imperfect, not precisely known, and subject to the effect of disturbances. Two consensus control algorithms, of the low-and-high gain feedback type and the low gain based variable structure control type, are proposed for solving the consensus problem. It is shown that both of these control algorithms achieve semi-global leader-following practical consensus in the presence of the imperfectness of the actuators when the communication topology among the follower agents is represented by a strongly connected and detailed balanced directed graph and the leader agent is a neighbor of at least one follower agent. The theoretical results are illustrated by numerical simulation. | Liangren SHI Zhiyun ZHAO Zongli LIN | 2017 | Science China(Information Sciences)2017，60，7： | 8 |
| 4 | Control of a flexible rotor active magnetic bearing test rig: a characteristic model based all-coefficient adaptive control approach显示文摘活跃磁性的轴承(AMB ) 在高速度的旋转机械工业发现了大量应用。AMB 的不稳定性和非线性使控制器图案困难,并且当 AMB 被结合时一个灵活转子,产生复杂动力学造成稳定和骚乱拒绝的问题,它为转子 AMB 系统的稳定、光滑的操作是批评的,甚至更困难。Proportional-integral-derivative (PID ) 控制在这块地里统治当前的 AMB 应用。尽管 PID 控制器是容易的实现,有批评性能限制,与他们联系阻止更先进的应用程序 AMB ,它通常要求更强壮的坚韧性和性能由象H无穷控制和 491 倒塌那样的现代控制方法出现了, 12 山崩, 32 斜坡碎片流动和 17 溪谷碎片流动越过学习区域被敲打声。所有山危险的全部的全面 areal 密度是 25.7% 。第二等的危险的分发主要被地震紧张,活跃差错地区,岩性学,斜坡和高度影响。超过 70% 第二等的危险与 XI 的地震紧张发生在地区,距离到差错地区在 0 和 25 km 之间,在 25hed 之间的一个斜坡 8.78 在病人之中(吝啬的 2.1ion 脉搏是 bip 諜 ? 諜吗?? | Long DI Zongli LIN | 2014 | Control Theory and Technology2014，12，1： | 8 |
| 5 | Multi-leader multi-follower coordination with cohesion, dispersion, and containment control via proximity graphs显示文摘This paper studies the problem of multi-leader multi-follower coordination with proximity-based network topologies. The particular interest is to drive all the followers towards the convex hull formed by the moving leaders while producing cohesion behavior and keeping group dispersion. First, in the case of stationary leaders, we design a gradient-based continuous control algorithm. We show that with this continuous algorithm the control objective can be achieved, and the tracking error bound can be controlled by tuning some control parameters. We apply the continuous control algorithm to the moving leaders case and show that the tracking error bound is related to the velocities of the leaders. However, in this case, the algorithm has one restriction that the velocities of the leaders should depend on neighboring followers' velocities, which might not be desirable in some scenarios. Therefore, we propose a nonsmooth algorithm for moving leaders which works under the mild assumption of boundedness of leaders' velocities. Finally, we present numerical examples to show the validity of the proposed algorithms. | Fei CHEN Wei REN Zongli LIN | 2017 | Science China(Information Sciences)2017，60，11： | 8 |
| 6 | On PID control for synchronization of complex dynamical network with delayed nodes显示文摘Over the past two decades, synchronization, as an interesting collective behavior of complex dynamical networks, has been attracting much attention. To reveal and analyze the inherent mechanism of synchronization in complex dynamical networks with time delays in nodes, this paper attempts to use PD and PI control protocols to achieve synchronization. Based on a classical network model, we investigate the PD and PI control for synchronization of complex dynamical networks with delayed nodes and obtain some sufficient conditions. By using Lyapunov functions and appropriate state transformations, we prove that global synchronization can be achieved via the above control protocols. Finally, some simulation examples are illustrated to validate the effectiveness of the proposed theoretical results. | GU HaiBo Lv JinHu LIN ZongLi | 2019 | Science China(Technological Sciences)2019，62，8： | 7 |
| 7 | Design of multiple anti-windup loops for multiple activations显示文摘This paper considers anti-windup design for linear systems subject to actuator saturation.Three anti-windup gains are designed for activations immediately at the occurrence actuator saturation,after the saturation has reached a certain level and in anticipation of the occurrence of saturation,respectively.The design is based on the minimization of L 2 gain from the disturbance to the controlled output of the resulting closed-loop system.Traditional anti-windup scheme involves a single anti-windup loop for immediate activation.A recent innovation is to design a single anti-windup loop for delayed or anticipatory activation,as well as to design two anti-windup gains,one for immediate activation and one for delayed activation.Our design of three anti-windup gains for three different activations is shown through simulation to lead to significant further performance improvement over the previous activation schemes. | WU XiongJun 1,2 & LIN Zongli 3,1 1 Department of Automation,Shanghai Jiao Tong University,and Key Laboratory of System Control and Information Processing,Ministry of Education of China,Shanghai 200240,China 2 No.802 Institute of Shanghai Academy of Space Flight Technology,the Eighth Academy of China Aerospace Science and Technology Corporation,Shanghai 200090,China 3 Charles L.Brown Department of Electrical and Computer Engineering,University of Virginia,P.O.Box 400743,Charlottesville,VA 22904-4743,USA | 2012 | Science China(Information Sciences)2012，55，9： | 5 |
| 8 | Distributed Cooperative Control of Battery Energy Storage Systems in DC Microgrids显示文摘The control of battery energy storage systems(BESSs)plays an important role in the management of microgrids.In this paper,the problem of balancing the state-ofcharge(SoC)of the networked battery units in a BESS while meeting the total charging/discharging power requirement is formulated and solved as a distributed control problem.Conditions on the communication topology among the battery units are established under which a control law is designed for each battery unit to solve the control problem based on distributed average reference power estimators and distributed average unit state estimators.Two types of estimators are proposed.One achieves asymptotic estimation and the other achieves finite time estimation.We show that,under the proposed control laws,SoC balancing of all battery units is achieved and the total charging/discharging power of the BESS tracks the desired power.A simulation example is shown to verify the theoretical results. | Tingyang Meng Zongli Lin Yacov A.Shamash | 2021 | IEEE/CAA Journal of Automatica Sinica2021，8，3： | 5 |
| 9 | Characteristic model based all-coefficient adaptive control of an AMB suspended energy storage flywheel test rig显示文摘Feedback control of active magnetic bearing(AMB) suspended energy storage flywheel systems is critical in the operation of the systems and has been well studied. Both the classical proportional-integralderivative(PID) control design method and modern control theory, such as H∞ control and μ-synthesis,have been explored. PID control is easy to implement but is not effective in handling complex rotordynamics. Modern control design methods usually require a plant model and an accurate characterization of the uncertainties. In each case, few experimental validation results on the closed-loop performance are available because of the costs and the technical challenges associated with the construction of experimental test rigs.In this paper, we apply the characteristic model based all-coefficient adaptive control(ACAC) design method for the stabilization of an AMB suspended flywheel test rig we recently constructed. Both simulation and experimental results demonstrate strong closed-loop performance in spite of the simplicity of the control design and implementation. | Xujun LYU Long DI Zongli LIN Yefa HU Huachun WU | 2018 | Science China(Information Sciences)2018，61，11： | 4 |
| 10 | Robust Semi-Global Leaderless Consensus and Containment Control of Identical Linear Systems with Imperfect Actuators显示文摘这份报纸两个都与有瑕疵的致动器为一组相同线性系统调查柔韧的半全球的无领袖的一致问题和柔韧的半全球的抑制控制问题。有瑕疵的致动器被象浸透和死了的地区那样的非线性描绘,在那里,输入输出关系精确不被知道。追随者代理人的动力学被输入添加剂骚乱也影响。Low-and-high 获得反馈一致协议被构造解决这些问题。更明确地,每个追随者代理人什么时候存取至少一个领导人代理人的信息,被显示出柔韧的半全球的无领袖的一致能在一张连接的未受指导的图上被完成,柔韧的半全球的抑制控制能被完成。数字模拟说明理论结果。 | SHI Liangren ZHAO Zhiyun LIN Zongli | 2018 | Journal of Systems Science & Complexity2018，31，1： | 3 |
| 11 | On robustness of an AMB suspended energy storage flywheel platform under characteristic model based all-coefficient adaptive control laws显示文摘A characteristic model based all-coefficient adaptive control law was recently implemented on an experimental test rig for high-speed energy storage flywheels suspended on magnetic bearings. Such a control law is an intelligent control law, as its design does not rely on a pre-established mathematical model of a plant but identifies its characteristic model while the plant is being controlled. Extensive numerical simulations and experimental results indicated that this intelligent control law outperforms a μ-synthesis control law, originally designed when the experimental platform was built in terms of their ability to suppress vibration on the high-speed test rig. We further establish, through an extensive simulation, that this intelligent control law possesses considerable robustness with respect to plant uncertainties, external disturbances, and time delay. | Xujun LYU Long DI Zongli LIN | 2019 | Frontiers of Information Technology & Electronic Engineering2019，20，1： | 3 |
| 12 | Dynamic anti-windup design for anticipatory activation:enlargement of the domain of attraction显示文摘Traditional anti-windup compensators are designed for activation immediately at the occurrence of actuator saturation.Recently,anti-windup compensators were designed for actuation either after the saturation has reached a certain level or in anticipation of its occurrence.In the case of static anti-windup compensators,it has been shown that an anti-windup compensator designed for activation in anticipation of actuator saturation would lead to better performance than those designed for immediate or delayed activation could,both in terms of transient performance and the size of the domain of attraction.More recently,it has been shown that a dynamic anti-windup compensator designed for anticipatory activation would also result in better transient performance than those designed for immediate or delayed activation could.In this paper,we design dynamic anti-windup compensators for the enlargement of the domain of attraction.These compensators are designed respectively for immediate,delayed and anticipatory activation.We will show by simulation that a dynamic anti-windup compensator designed for anticipatory activation would result in a larger domain of attraction than a dynamic anti-windup compensator designed for immediate or delayed activation could. | WU XiongJun LIN Zongli | 2014 | Science China(Information Sciences)2014，57，1： | 2 |
| 13 | On semi-global stabilization of minimum phase nonlinear systems without vector relative degrees显示文摘Recently, we developed a structural decomposition for multiple input multiple output nonlinear systems that are affine in control but otherwise general. This structural decomposition simplifies the conventional backstepping design and allows a new backstepping design procedure that is able to stabilize some systems on which the conventional backstepping is not applicable. In this paper we further exploit the properties of such a decomposition for the purpose of solving the semi-global stabilization problem for minimum phase nonlinear systems without vector relative degrees. By taking advantage of special structure of the decomposed system, we first apply the low gain design to the part of system that possesses a linear dynamics. The low gain design results in an augmented zero dynamics that is locally stable at the origin with a domain of attraction that can be made arbitrarily large by lowering the gain. With this augmented zero dynamics, backstepping design is then applied to achieve semi-global stabilization of the overall system. | LIU XinMin LIN ZongLi | 2009 | Science in China(Series F)2009，52，11： | 2 |
| 14 | Stability anal- ysis of linear time-delay systems subject to input satu- ration显示文摘 | CAO Yongyan LIN Zongli HU Tingshu | 2002 | IEEE Transactions on Circuits and Sys- tems: I Fundamental Theory and Applications2002，49，2： | 1 |
| 15 | H∞ Anti-windup design for linear systems subject to input saturation显示文摘 | Cao Yongyan Lin Zongli | | 0，，03： | 1 |
| 16 | Stability analysis of dis crete-time systems with saturation by a saturationdependent Lyapunov function 显示文摘 | Yongyan Cao Zongli Lin | 2003 | Automatic2003，39，7： | 1 |
| 17 | Stability analysis of discrete-time systems with actuator saturation by a saturation-dependent Lyapunov function显示文摘 | CAO Yongyan LIN Zongli | 2003 | Automatic2003，39，11： | 1 |
| 18 | Analysis and design for discrete-time linear systems subject to actuator saturation 显示文摘 | HU Tingshu LIN Zongli CHEN B M | 2002 | Systems Control Letters2002，45，2： | 1 |
| 19 | Semi-global stabilization of linear systems subject to output saturation显示文摘 | Lin Zongli Hu Tingshu | 2001 | Systems and Control Letters2001，43，3： | 1 |
| 20 | Design of switched linear systems in the presence of actuator saturation and L-infinity disturbances显示文摘This paper considers the problem of disturbance tolerance/rejection of a switched system resulting from a family of linear systems subject to actuator saturation and L-infinity disturbances.For a given set of linear feedback gains,a given switching scheme and a given bound on the L-infinity norm of the disturbances,conditions are established,in terms of linear or bilinear matrix inequalities,under which a set of a certain form is invariant for a given switched linear system in the presence of actuator saturation and L-infinity disturbances,and the closed-loop system possesses a certain level of disturbance rejection capability.With these conditions,the design of feedback gains and switching scheme can be formulated and solved as constrained optimization problems.Disturbance tolerance is measured by the largest bound on the disturbances for which the trajectories starting from a given set remain bounded.Disturbance rejection is measured either by the L-infinity norm of the system output or by the system’s ability to steer its state into and/or keep it within a small neighborhood of the origin.In the event that all systems in the family are identical,the switched system reduces to a single system under a switching feedback law.Simulation results show that such a single system under a switching feedback law could have stronger disturbance tolerance/rejection capability than a single linear feedback law can. | Liang LU Zongli LIN Haijun FANG | 2010 | 控制理论与应用(英文版)2010，8，3： | 1 |
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