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第26届中国控制与决策会议

作者： Xiang Wang Jia Ma Xiaowei Li Xiaodong Zhao Zongli Lin Jie Chen Zhifeng Shao Department of Automation and Key Laboratory of System Control and Information Processing of the Ministry of EducationShanghai Jiao Tong University Department of Resource and Environmental Science School of Agriculture and BiologyShanghai Jiao Tong University School of Biomedical Engineering Shanghai Jiao Tong University Charles L.Brown Department of Electrical and Computer Engineering University of Virginia

In controlling biological diseases, it is often more potent to use a combination of agents than using individual ones. However, the number of possible combinations increases exponentially with the number of agents and their concentrations. It is prohibitive to search for effective agent combinations by trial and error as biological systems are complex and their responses to agents are often a slow process. This motivates to build a suitable model to describe the biological systems and help reduce the number of experiments. In this paper, we consider the use of fungicides to inhibit Bipolarismaydis and construct models that describe the responses to fungicide combinations. Three data-driven modeling methods, the polynomial regression, the artificial neural network and the support vector regression, are compared based on the experimental data of the inhibition rates of the southern corn leaf blight with different fungicide combinations. The analysis of the results demonstrates that the support vector regression is best suited to the construction of the response model in terms of achieving better prediction with fewer experiments.

关键词： agent combinations,complex system,data-driven model,polynomial regression,artificial neural network,support vector regression

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Second-order sliding-mode controller for higher-order DC-DC converters

Second-order sliding-mode controller for higher-order DC-DC ...

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IEEE Workshop on Computers in Power electronics

作者： Ramon Leyva Dragan Maksimovic Rui Ling Dept. Electronic Electrical and Automatic Control Engineering Universitat Rovira i Virgili Tarragona. Spain Colorado Power Electronics Center ECEE Department University of Colorado Boulder Boulder CO College of Automation Chongqing University Chongqing China

The paper adapts the second-order sliding mode (SOSM) control technique to higher-order dc-dc converters. In particular, the paper presents an adaptation of this control technique for buck converters with input filter. The approach consists of regulating the converter output voltage by means of a state-machine similar to the basic SOSM controller, which is shown to perform well as long as the input filter is properly damped, thus ensuring the overall converter stability. Stability and fast dynamic responses are verified by simulations on a 5 V-to-1.3 V point-of-load buck converter with a damped LC input filter.

关键词： Switches Damping Power harmonic filters Trajectory Capacitors Integrated circuit modeling

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The IMC-PID controller Design for TITO Process Using Closed-loop Identification Method

The IMC-PID Controller Design for TITO Process Using Closed-...

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International Conference on control, automation, Robotics & Vision

作者： XiaoFeng Li Ruiyuan Wu Weidong Zhang Instrument and Power Plant Control Department Electric Power Research Institute of Guangdong Power Group Co. Guangzhou 510080. China School of Electronic and Information Engineering South China University of Technology Guangzhou China Department of Automation Shanghai Jiaotong University Shanghai China

ISBN: (纸本)9781479952007

A new auto-tuning method is presented in this paper for the TITO process with time delay. The first step is to identify the process model and the second step is to design the IMC-PID controller. In the identifying procedure, both the bias relay test and the idea relay test are involved to identify the model. The important feature of the proposed method is that it does not require the prior information about the process and the steady-state process gain can be directly obtained. In the second step, this method is used to design the IMC-PID controller of the TITO control system. The new auto-tuning scheme is implemented through the function code in typical DCSs (EDPF-NT, OVATION, Symphony, etc) and is used in 300MW fossil-fuel units. The industrial applications show that the scheme achieves better performance in specific load variation range.

关键词： system identification relay feedback test Robust control TITO Automatic generation control

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Integrated object and path demonstration for industrial robots in adaptive handling applications

Integrated object and path demonstration for industrial robo...

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International Conference on Emerging Technologies and Factory automation (ETFA)

作者： C. F. Wu S. K. Lin J. Lambrecht T. D. Nguyen A. Vick M. Kleinsorge J. Krüger Division of Intelligent System Engineering Industrial Technology Research Institute Mechanical and Systems Research Laboratory Hsinchu Taiwan National Chiao Tung University Institute of Electrical Control Engineering Hsinchu Department Industrial Automation Technology Technische Universität Berlin Insitute for Machine Tools and Factory Management Berlin Germany

We propose an approach for integrated object and path demonstration. The main idea is to choose the motion of the robot depending on the object it grabs. When programming, an object is fixed at the robot's gripper. Path programming is done using haptic guidance. Afterwards, if a robot is handed over an object it knows before, it reproduces the path assigned to the object. Path programming and object recognition can be done with a single force/torque sensor. In our opinion, this way of programming is especially suited for creating pick and place tasks in frequently changing production environments where (re-)programming has to be done frequently.

关键词： Robot sensing systems Programming Service robots Force Grippers Training

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Further Results on the Maximal Contractively Invariant Ellipsoid of Discrete-time Linear systems with Multiple Inputs Subject to Actuator Saturation

Further Results on the Maximal Contractively Invariant Ellip...

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IEEE Annual Conference on Decision and control

作者： Yuanlong Li Zongli Lin Department of Automation Shanghai Jiao Tong University and Key Laboratory of System Control and Information Processing of Ministry of Education Shanghai 200240 China Charles L. Brown Department of Electrical and Computer Engineering University of Virginia P.O. Box 400743 Charlottesville VA 22904-4743 USA

ISBN: (纸本)9781467360890

Contractively invariant ellipsoids have been extensively used as estimates of the domain of attraction of a linear system under a saturated linear feedback. For a discrete-time linear system with a single input subject to actuator saturation, based on a convex hull representation of the saturated linear feedback, a necessary and sufficient condition for an ellipsoid to be contractively invariant was previously established. Based on this condition, the determination of the maximal contractively invariant ellipsoid can be formulated and solved as an LMI problem. In this paper, we develop a criterion to determine if a contractively invariant ellipsoid is the maximal one for discrete-time saturated linear systems with multiple inputs. This criterion is based on the solution of an LMI problem, which involves a generalized convex hull representation of saturated linear feedbacks, and includes the existing result for discrete-time saturated linear systems with a single input as a special case. Simulation results demonstrate the effectiveness of our results.

关键词： Linear system multi-input discrete-time Invariant discrete time systems linear feedback Saturated convex hull region of attraction

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Robust fault tolerant control on distributed networked control systems with quantized states

Robust fault tolerant control on distributed networked contr...

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World Congress on Intelligent control and automation (WCICA)

作者： Yang Ge Jingcheng Wang Yi Zhang Kang Li Department of Automation Shanghai Jiao Tong University and Key Laboratory of System Control and Information Processing Shanghai China Shanghai Urban-Rural Construction and Transportation Development Research Institute Shanghai China Electrical Engineering and Computer Science Queen's University Belfast Belfast UK

The distributed networked control systems are considered in this paper. Several sub-systems which are connected with each other through a communication network make up the whole system. Each sub-system has its own quantizer so that any information which needs be transmitted to other sub-systems will be quantized due to limited bandwidth. Meanwhile, the actuator faults, including outage, loss of effectiveness and stuck are also considered in our research. A mode-based state feedback controller is given in this paper to stable such NCSs and to meet the robust H-inf performance. A simulation example is proposed to illustrate the effectiveness of our method finally.

关键词： Quantization (signal) Networked control systems State feedback Closed loop systems Communication networks Actuators Fault tolerance

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Boundary feedback control design and stability of open-channel networks

Communications in Computer and Information Science

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Communications in Computer and Information Science 2013年 355卷 342-350页

作者： Cen, Lihui Xi, Yugeng Li, Dewei Cen, Yigang Department of Control Engineering Central South University Changsha China Key Laboratory of System Control and Information Processing Ministry of Education Department of Automation Shanghai Jiaotong University Shanghai China School of Computer and Information Technology Beijing Jiaotong University Beijing China

This paper proposed a boundary feedback control design for open-channel networks with trapezoidal cross sections by using a Riemann invariants approach. The open-channel network is well modeled by the nonlinear Saint-Venant equations. Based on the characteristic form in terms of Riemann invariants, the stabilizing boundary control is developed for a single canal. The stability condition and the boundary control design are subsequently generalized to open-channel networks composed by multireaches in cascade. The design of the boundary feedback control laws either for a single canal or for the cascaded networks is illustrated in a unified design framework. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Feedback control

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Semi-Global Output Consensus of Linear Agents with External Disturbances and Actuator Saturation:An Output Regulation Approach

Semi-Global Output Consensus of Linear Agents with External ...

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第三十三届中国控制会议

作者： Zhiyun Zhao Yiguang Hong Zongli Lin Department of Automation and Key Laboratory of System Control and Information Processing of the Ministry of EducationShanghai Jiao Tong University Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of Sciences Charles L. Brown Department of Electrical and Computer Engineering University of VirginiaP.O. Box 400743Charlottesville VA 22904-4743 U.S.A.

This paper studies semi-global leader-following output consensus of a multi-agent system. Each follower agent in the system, described by a general linear system subject to external disturbances and actuator saturation, is to track the leader agent. Conditions on the agent dynamics are identified under which a low gain feedback based linear state control algorithm is constructed for each follower agent such that the leader-following output consensus is achieved when the communication topology among the agents is a directed graph that contains no loop and the leader is globally reachable. In addition, discussions and simulations are also provided for the output consensus in the presence of actuator saturation.

关键词： Leader-following output consensus,low gain feedback,multi-agent systems,actuator saturation

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Quantized control for Nonlinear Markovian Jump systems

Quantized Control for Nonlinear Markovian Jump Systems

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IEEE Annual Conference on Decision and control

作者： Ligang Wu Peng Shi Fanbiao Li Michael V. Basin Yuxin Zhao Space Control and Inertial Technology Research Center Harbin Institute of Technology Harbin 150001 China School of Electrical and Electronic Engineering the University of Adelaide SA 5005 Australia Department of Physical and Mathematical Sciences Autonomous University of Nuevo Leon Mexico College of Automation Harbin Engineering University Harbin 150001 China

ISBN: (纸本)9781467360890

This paper is concerned with the quantized control design problem for a class of nonlinear Markovian jump systems. The sufficient condition for the Markovian jump systems is developed, which guarantees that the corresponding closed-loop systems are stochastically stable and have a prescribed H_∞ performance. The existence condition for full- and reduced-order dynamic output feedback controllers are provided, and the cone complementarity linearization procedure is employed to cast the controller design problem into a sequential minimization one, which can be solved efficiently by using existing optimization techniques. Finally, an example is presented to show efficiency of the developed approach.

关键词： jump design problems Induction loop systems nonlinearity Closed loop systems

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Development of shortest path computing mechanism with consideration of commercial vehicles characteristics

Development of shortest path computing mechanism with consid...

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International Conference on Smart Computing Workshops (SMARTCOMP Workshops)

作者： Jau-Ming Su Chih-Hung Chang Tsung-Ping Yang Chun-Fu Chuang Shang-Yen Su Department of Transportation Technology and Logistics Management Chung Hua University Hsinchu Taiwan Department of Marketing and Distribution Management Chien Hsin University Taoyuan Taiwan Division for Telematics and Vehicular Control System Industrial Technology Research Institute Hsinchu Taiwan Department of Electronic Engineering The Chinese University of Hong Kong Hong Kong NT

ISBN: (纸本)9781479964482

Commercial vehicles are used for delivering goods, and they differ from private vehicles in height, width, weight and turning radius. Some providers account for the weight, height, and access limits of large vehicles in their navigation systems, but none of them have considered the turning capability of large vehicles. This has led to a loss of confidence in navigation systems among many commercial vehicle drivers. This paper proposes a method for navigation systems to calculate the shortest path while taking into account the turning capability of commercial vehicles. Map data processing and algorithm design have been adjusted to reflect the routes rendered slow or impassable for commercial vehicles due to tight turns. This paper integrates spatial data and shortest path algorithms to develop a shortest path computing mechanism that applies to large commercial vehicles. Field testing confirmed that the calculation method proposed by this paper provided route guidance appropriate to the characteristics of commercial vehicles.

关键词： Vehicles Roads Turning Navigation Algorithm design and analysis Logistics Educational institutions

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