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IEEE 17th International Conference on Computational Science and Engineering (CSE)

作者： Chen, Dechao Qiao, Tianjian Tan, Hongzhou Li, Mingming Zhang, Yunong Sun Yat Sen Univ Sch Informat Sci & Technol Guangzhou 510006 Guangdong Peoples R China SYSU CMU Shunde Int Joint Res Inst Shunde 528300 Peoples R China Minist Educ Key Lab Autonomous Syst & Networked Control Guangzhou 510640 Guangdong Peoples R China

ISBN: (纸本)9781479979813

The Runge phenomenon illustrates that equidistant polynomial interpolation of the Runge function will cause wild oscillation near the endpoints of the interpolation interval as the order of the interpolation polynomial increases. In this paper, the pseudoinverse cubic spline (PCS) is presented to accurately approximate the Runge function at equidistant interpolation nodes and solve the problem of Runge phenomenon. PCS is constructed by employing the right pseudoinverse to figure out the minimum norm solution of the cubic spline's second-order derivatives. Thus, unlike the traditional cubic splines that additionally rely on endpoint constraints, PCS only employs the information of interpolation nodes. By PCS, the Runge function is effectively approximated without causing oscillation. Numerical experiments substantiate the efficacy and accuracy of PCS.

关键词： Interpolation

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Power-Activated WASD Neuronet Based Russian Population Estimation, Correction and Prediction 17

Power-Activated WASD Neuronet Based Russian Population Estim...

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IEEE 17th International Conference on Computational Science and Engineering (CSE)

作者： Zhang, Yunong Liu, Jianxi Guo, Dongsheng Ding, Sitong Tan, Hongzhou Sun Yat Sen Univ Sch Informat Sci & Technol Guangzhou 510006 Guangdong Peoples R China SYSU CMU Shunde Int Joint Res Inst Shunde 528300 Peoples R China Minist Educ Key Lab Autonomous Syst & Networked Control Guangzhou 510640 Guangdong Peoples R China

ISBN: (纸本)9781479979813

In recent years, the serious situation of Russian population causes concerns of the government, which also attracts great attentions of researchers from all over the world. The research on Russian population can help the government to make positive policies for solving the crisis and boosting economic growth. In this paper, implicitly considering almost all factors that influence population development, we present a 3-layer feedforward power-activated neuronet (PAN) equipped with the weights-and-structure-determination (WASD) algorithm for the estimation, correction and prediction of Russian population. Many numerical tests are conducted via WASD-PAN using past 2013-year Russian population data. We estimate the Russian population from 1000AD to 1800AD, correct it around 1897AD, and further indicate several possibilities of Russian population in the future. With the most possibility, Russian population is predicted to decrease steadily in next decade;while it is still possible that Russian population will (finally) increase.

关键词： Population statistics

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From Newton Fractals to Gradient Fractals in Addition to Zhang Fractals 17

From Newton Fractals to Gradient Fractals in Addition to Zha...

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IEEE 17th International Conference on Computational Science and Engineering (CSE)

作者： Zhang, Yunong Qiao, Tianjian Liao, Bolin Jin, Long Chen, Junwei Sun Yat Sen Univ Sch Informat Sci & Technol Guangzhou 510006 Guangdong Peoples R China SYSU CMU Shunde Int Joint Res Inst Shunde 528300 Peoples R China Minist Educ Key Lab Autonomous Syst & Networked Control Guangzhou 510640 Guangdong Peoples R China

ISBN: (纸本)9781479979813

The paper employs gradient dynamics (GD), in addition to Zhang dynamics (ZD), to generate new fractals which are quite different from the conventional Newton fractals (NF). The proposed gradient fractals (GF) have three types. Specifically, via appropriate iterative formulas derived in complex domain, the first-type and second-type fractals are generated, i.e., 1GF and 2GF. By expanding the conventional gradient formula from real domain to complex domain, the third-type fractals are thus obtained, i.e., 3GF. Besides, Zhang fractals (ZF) are yielded via solving static and time-variant equations using ZD. Numerical experiments substantiate the effectiveness of complex-valued GD and ZD for generating new fractals. Connections and differences among NF, GF and ZF are also revealed.

关键词： Fractals

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Restoration of Missing Time-Series Data via Multiple Sine Functions Decomposition with Guangzhou-Temperature Application 2

Restoration of Missing Time-Series Data via Multiple Sine Fu...

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2nd International Conference on systems and Informatics (ICSAI)

作者： Zhang, Yunong Ding, Weixiang Lao, Wenchao Wang, Ying Tan, Hongzhou Sun Yat Sen Univ Sch Informat Sci & Technol Guangzhou 510006 Guangdong Peoples R China SYSU CMU Shunde Int Joint Res Inst Shunde 528300 Peoples R China Minist Educ Key Lab Autonomous Syst & Networked Control Guangzhou 510640 Guangdong Peoples R China

ISBN: (纸本)9781479954582

The restoration of missing data is an important concern for data analysis. In this paper, an algorithmically innovative model termed multiple sine function decomposition (MSFD) model is proposed and developed for restoring the missing data about monthly average temperature (MAT) of Guangzhou, which is a representative major city of China. The proposed MSFD model is formed by successive approximation based on the existing data. After that, the MSFD model with parameters and structure determined is exploited to restore the missing data. Experimental results indicate that the proposed MSFD model can effectively estimate the intentionally removed data, and the values of the restored data are quite close to the values of the true data. In addition, with quantitative and qualitative analysis, the effectiveness of the proposed model is further illustrated.

关键词： Restoration

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Static anti-windup synthesis for linear systems subject to actuator amplitude and rate saturation using an LMI approach

Static anti-windup synthesis for linear systems subject to a...

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第三十二届中国控制会议

作者： WANG Naizhou PEI Hailong WANG Jun Key Laboratory of Autonomous Systems and Networked Control Ministry of Education in South China University of Technology

ISBN: (纸本)9781479900305

In this paper,a static anti-windup synthesis problem is *** original system with amplitude and rate saturation is simplified to the synthesis of a system with only amplitnde *** on the general sector condition, the static anti-windup synthesis is solved by linear matrix inequality(LMI) using Lyapunov's second *** with other approaches,the designed controller need not to be strictly proper and can be applied to both stable and unstable system. Meanwhile,the best performance index can be obtained by solving a convex optimization *** the end of the paper,a simulation example is shown to illustrate the effectiveness of the proposed approaches.

关键词： amplitude and rate saturation static anti-windup compensation linear matrix inequality

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Adaptive Output Feedback control Using Fault Compensation and Fault Estimation for Linear System with Actuator Failure

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International Journal of Automation and computing 2013年第5期10卷 463-471页

作者： Jun Wang Hai-Long Pei Nai-Zhou Wang Key Laboratory of Autonomous Systems and Networked Control Ministry of Education South China University of Technology College of Automation Science and Engineering South China University of Technology

The problem of linear systems subject to actuator faults（outage,loss of efectiveness and stuck）,parameter uncertainties and external disturbances is *** active fault compensation control law is designed which utilizes compensation in such a way that uncertainties,disturbances and the occurrence of actuator faults are account *** main idea is designing a robust adaptive output feedback controller by automatically compensating the fault dynamics to render the close-loop *** to the information from the adaptive mechanism,the updating control law is derived such that all the parameters of the unknown input signal are ***,a disturbance decoupled fault reconstruction scheme is presented to evaluate the severity of the fault and to indicate how fault accommodation should be *** advantage of fault compensation is that the dynamics caused by faults can be accommodated *** proposed design method is illustrated on a rocket fairing structural-acoustic model.

关键词： Fault compensation fault-tolerant control robust adaptive control fault reconstruction actuator failure

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Sampling rate scheduling and optimal control co-design for networked control systems

Sampling rate scheduling and optimal control co-design for n...

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International Conference on Mechatronics and control (ICMC)

作者： Jinna Li Haibin Yu Peng Zeng Chao Liu Qingling Zhang Lab of Operation and Control Shenyang University of Chemical Technology Liaoning P.R. China Key Laboratory of Networked Control Systems Chinese Academy of Sciences Liaoning P.R. China Institute of Systems Science Northeastern University

ISBN: (纸本)9781479925391

A co-design of sampling rate scheduling and optimal control is investigated for networked control systems (NCSs) with transmission delay and packet loss. The basic purpose of proposed co-design scheme is to save substantial communication in both the sensor-to-controller channels and the controller-to-actuator channels, while guaranteeing optimal control performance of NCSs. Firstly, a switched systems model used to describe NCSs with sampling periods subject to a finite set is constructed. Secondly, guaranteed cost control is studied for NCSs in order to obtain two upper bounds of quadratic performance of systems under the two cases, (a): the worst network communication condition and the longest sampling period; (b): the best network communication condition and the shortest sampling period. After the above preparations have been done, a performance partition-based sampling rate scheduling algorithm is developed to perform co-design strategy for NCSs. Moreover, to calculate control performance in real-time approach and guarantee the asymptotically stable of systems, adaptive controllers are designed in terms of linear matrix inequality (LMI) technology. Finally, a numerical example and simulations are given to illustrate the effectiveness of the proposed method.

关键词： Delays Upper bound control systems Packet loss Scheduling Quality of service

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Solving the Problem of Runge Phenomenon by Pseudoinverse Cubic Spline

Solving the Problem of Runge Phenomenon by Pseudoinverse Cub...

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IEEE International Conference on Computational Science and Engineering, CSE

作者： Dechao Chen Tianjian Qiao Hongzhou Tan Mingming Li Yunong Zhang Ministry of Education Key Laboratory of Autonomous Systems and Networked Control Guangzhou China SYSU-CMU Shunde International Joint Research Institute Shunde China School of Information Science and Technology Sun Yat-sen University (SYSU) Guangzhou China

ISBN: (纸本)9781479979820

The Runge phenomenon illustrates that equidistant polynomial interpolation of the Runge function will cause wild oscillation near the endpoints of the interpolation interval as the order of the interpolation polynomial increases. In this paper, the pseudo inverse cubic spline (PCS) is presented to accurately approximate the Runge function at equidistant interpolation nodes and solve the problem of Runge phenomenon. PCS is constructed by employing the right pseudo inverse to figure out the minimum norm solution of the cubic spline's second-order derivatives. Thus, unlike the traditional cubic splines that additionally rely on endpoint constraints, PCS only employs the information of interpolation nodes. By PCS, the Runge function is effectively approximated without causing oscillation. Numerical experiments substantiate the efficacy and accuracy of PCS.

关键词： Splines (mathematics) Interpolation Polynomials Chebyshev approximation Oscillators

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Adaptive control of Robot System of up to a Half Passive Joints

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14th Annual Conference on Towards autonomous Robotic systems (TAROS)

作者： Yang, Chenguang Li, Jing Li, Zhijun Chen, Weisheng Cui, Rongxin Univ Plymouth Ctr Robot & Neural Syst Sch Comp & Math Plymouth PL4 8AA Devon England South China Univ Technol Coll Automat Sci & Engn MOE Key Lab Autonomous Syst & Networked Control Guangzhou Guangdong Peoples R China Xidian Univ Dept Math Xian Peoples R China Northwestern Polytech Univ Sch Marine Sci & Technol Xian Peoples R China

ISBN: (纸本)9783662436455;9783662436448

In this paper, we study adaptive control of a robot system of 2n joints with up to n joints being passive. By exploiting the dynamics couplings between the active joints and the passive joints, we have developed a method to use desired trajectories of active joints to indirectly "control" the motion of the passive joints. Optimal control techniques have been employed to control the active joints with smooth motion of minimized acceleration. Neural network (NN) has been used for block function approximation, in order to generate ideal desired trajectory of active joints. It has been theoretically established that under the developed adaptive controller and NN based trajectory generator, the passive joints can be effectively controlled to follow the predefined trajectory.

关键词： Passive joint Optimization LQR Model reference control

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ZG control of Populations of Lotka-Volterra Equations Using Interaction Coefficients as Inputs

ZG Control of Populations of Lotka-Volterra Equations Using ...

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IEEE International Conference on Computational Science and Engineering, CSE

作者： Yunong Zhang Yinyan Zhang Dechao Chen Zhengli Xiao Hongzhou Tan School of Information Science and Technology Sun Yat-sen University (SYSU) Guangzhou China SYSU-CMU Shunde International Joint Research Institute Shunde China Key Laboratory of Autonomous Systems and Networked Control Ministry of Education Guangzhou China

ISBN: (纸本)9781479979820

Lotka-Volterra equations describe the population relationship between two species, i.e., predator and prey. In many circumstances, it is necessary to introduce a control method into such a predator-prey system. Different from traditional methods, by applying Zhang-gradient (ZG) method and using interaction coefficients of Lotka-Volterra equations as inputs, the population control problem of the predator-prey system is solved in this paper. Besides, various coefficient controllers according to the ZG method for different control purposes based on the predator-prey system are designed. In addition, simulation results substantiate the effectiveness of the ZG coefficient controllers.

关键词： Trajectory Sociology Statistics Mathematical model Equations Simulation Predator prey systems

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