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Parameter estimation and control for a neural mass model based on the unscented Kalman filter

Physical Review E 2013年第4期88卷 042905-042905页

作者： Xian Liu Qing Gao Key Lab of Industrial Computer Control Engineering of Hebei Province Institute of Electrical Engineering Yanshan University Qinhuangdao 066004 China

Recent progress in Kalman filters to estimate states and parameters in nonlinear systems has provided the possibility of applying such approaches to neural systems. We here apply the nonlinear method of unscented Kalman filters (UKFs) to observe states and estimate parameters in a neural mass model that can simulate distinct rhythms in electroencephalography (EEG) including dynamical evolution during epilepsy seizures. We demonstrate the efficiency of the UKF in estimating states and parameters. We also develop an UKF-based control strategy to modulate the dynamics of the neural mass model. In this strategy the UKF plays the role of observing states, and the control law is constructed via the estimated states. We demonstrate the feasibility of using such a strategy to suppress epileptiform spikes in the neural mass model.

关键词： PARAMETER estimation MATHEMATICAL models ELECTROENCEPHALOGRAPHY KALMAN filtering EPILEPSY NONLINEAR systems

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Fuzzy adaptive backstepping sliding mode control for the hydraulic gap nonlinear system

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Journal of Computational Information Systems 2013年第3期9卷 1113-1120页

作者： Wu, Zhongqiang Tang, Yachao Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China

In this paper, a fuzzy adaptive backstepping sliding mode controller is presented for the hydraulic gap nonlinear system with uncertain parameters and load disturbances. Fuzzy adaptive systems are employed to approximate the uncertain parameters and load disturbances, which eliminates the impacts of uncertain parameters and load disturbances. According to the characteristics of the hydraulic gap nonlinear system, the appropriate Lyapunov functions are selected to reduce the steps of the backstepping design and an effective solution is given to the problem of the explosion of calculation of the backstepping design process of high-order systems. The sliding mode control method is introduced in the final step of backstepping design to further improve the robustness of the system. In the controller design, the adaptive laws of uncertain parameters are given and the convergence of the system tracking error is proved. The simulation results show that the controller can achieve fast, accurate and stable tracking of the specified location. Copyright © 2013 Binary Information Press.

关键词： Backstepping

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Rapid ILC with variable index gain for manipulator trajectory tracking

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Journal of Computational Information Systems 2013年第12期9卷 4739-4746页

作者： Wang, Hongrui Wang, Na Wang, Yueling Wang, Chao Key Lab. of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China

A non-causal iterative learning control (ILC) with variable index gain is presented to solve the trajectory tracking problem of rigid robot manipulator with non-zero initial error. This scheme eliminates the restriction that the initial state must be fixed or be consistent with the desired state. Compared with fixed learning gain, ILC with variable index gain not only avoids choosing gain aimlessly but also significantly enhances the convergent speed. In this paper, the proposed non-causal algorithm uses error information of future time in previous iteration, then the controller can offset future disturbances in advance. From the perspective of execution, the proposed scheme is easy to implement. Moreover, we analyze the convergence of the new algorithm. Finally, applying the proposed algorithm in manipulator trajectory tracking system, we present simulation results to illustrate the effectiveness of the control scheme. © 2013 by Binary Information Press.

关键词： Iterative methods

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A virtual reality based 3D simulation modeling of ethylene cracking plant

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2013 International Conference on Advances in Materials Science and Manufacturing Technology, AMSMT 2013

作者： Tian, Chun-Yao Li, Guo-You Department of Automation Liaoning Petrochemical Vocational Technology College Jinzhou 121001 China Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China

ISBN: (纸本)9783037857984

Using virtual reality computer simulation technology, by researching of the ethylene production process equipment and production process, Ethylene cracking plant modeling and simulation training system development were completed. Ethylene cracking device 3D modeling development scheme and process were introduced, which include the use of 3DMAX software for 3D modeling design, combined with the virtual reality software realization of human-computer interactive function design. Based on Virtual reality technology, 3D simulation system of ethylene plant was realized. © (2013) Trans Tech Publications, Switzerland.

关键词： Virtual reality

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DCS simulation modeling and development for ethylene cracking plant

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2013 International Conference on Advances in Materials Science and Manufacturing Technology, AMSMT 2013

作者： Qi, Xiang Yang Li, Guo You Department of Petrochemical Liaoning Petrochemical Vocational Technology College Jinzhou 121001 China Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China

ISBN: (纸本)9783037857984

On the basis of the analysis of ethylene cracking process, equipment, process control and operation conditions, using process control system simulation platform, Ethylene cracking plant DCS modeling and simulation training system were developed. Using continuous modeling method, combined mechanism modeling with test data analysis, DCS control system mathematic model was established, by which normal operation, start, shutdown process and accident treatment process were simulated. The online evaluating system was developed too, which supply a virtual platform for the training of ethylene cracking process. © (2013) Trans Tech Publications, Switzerland.

关键词： Process control

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A fuzzy-PI hybrid controller based on a disturbance observer

A fuzzy-PI hybrid controller based on a disturbance observer

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International Conference on Natural Computation (ICNC)

作者： Manjun Cai Yue Wang Key lab of industrial computer control engineering in Hebei province Yanshan University Qinhuangdao China

This paper proposes a fuzzy PI hybrid speed controller for a PMSLM (Permanent Magnet Synchronous Linear Motor), which is based on a friction disturbance observer. It can improve the problems caused by the friction disturbance and the system parameters perturbation. Also the problem of the blind area for fuzzy control is eventually eliminated, because of the introduction of the PI control. Finally, through the simulation test and comparative analysis with the traditional PID control method, the validity and rationality of the control scheme is illustrated.

关键词： Observers Mathematical model Fuzzy control PD control Steady-state Equations Friction

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Multiple Relay Selection Scheme Based on Artificial Bee Colony Algorithm

Multiple Relay Selection Scheme Based on Artificial Bee Colo...

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International Conference on Instrumentation, Measurement, computer, Communication and control (IMCCC)

作者： Juan Wang Xinbin Li Kai Ma Key Lab of Industrial Computer Control Engineering Hebei Province Yanshan University Qinhuangdao China

ISBN: (纸本)9781479913930

Relay selection (RS) and power control are two essential parts in cooperative cognitive relay network. RS is equal to power control in the condition that a relay cooperates with its full power or doesn't cooperate at all. So the optimal signal-to noise ratio (SNR) value is described as a 0-1 nonlinear programming integer problem (NLIP). In this paper, a multiple relay selection (MRS) scheme based on artificial bee colony algorithm (ABC) is proposed that can fully obtain optimal SNR value. Simulations show the performance of MRS scheme by ABC algorithm is better than that of exhaustive search, single RS scheme and other sub optimal MRS schemes.

关键词： Signal to noise ratio Cognitive radio Power control Relay networks (telecommunications)

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Tension control study in the finishing mill of aluminum hot rolling mills based on PSO+CMAC

Tension control study in the finishing mill of aluminum hot ...

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2013 3rd International Conference on Advanced Measurement and Test, AMT 2013

作者： Yang, Jing-Ming Chen, Li Wan-Hong, Wang Che, Hai-Jun Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China National Engineering Research Center for Equipment and Technology of C.S.R Yanshan University Qinhuangdao 066004 China Henan Mingtai Al. Industrial Co. Ltd of Gongyi Henan Province 451200 China

ISBN: (纸本)9783037857168

Aimed at decreasing the tension variation during transforming process of "1+4" aluminum hot rolling mills unit in one factory of Henan, we analyzed the factors affecting tension variation and improved the tension formula of hot rolling mills process considering the influence of tension on forward slip value. The tension forming process of hot rolling mills from stand 1 to stand 4 is simulated, and the tension structure diagrams of the four-stands are constructed. Due to nonlinear characteristics of the aluminum hot rolling mills tension system, conventional PID controller could not meet the requirement of the system. So we proposed the mixed control of Cerebellar Model Articulation controller (CMAC) coupled with PID to solve the problem of online parameters control and we used Particle Swarm Optimization (PSO) algorithm to optimize PID controller parameters. By simulation, it could be found that the using of PSO+CMAC significantly reduced surplus adjustment and transition time, and strip tension coupling degree among stands was also reduced. © (2013) Trans Tech Publications, Switzerland.

关键词： Aluminum

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Global dynamic sliding mode control of PMSM speed servo systems base on extended state observer

Global dynamic sliding mode control of PMSM speed servo syst...

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Chinese control Conference (CCC)

作者： Yangyang Wu Yiming Fang Le Liu Yongchao Zhang Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China

Base on the the high performance requirements of permanent magnet synchronous motor(PMSM) speed servo system for non-sinusoidal oscillation control system of continuous casting mold, a global dynamic sliding mode(GDSM) control method is proposed, The reaching law of the sliding mode is designed by exponential fast terminal sliding mode(EFTSM) method and the controllers could effectively diminish chattering by designing the first derivative of control output which contains discontinuous function of sliding mode control; Considers the time variation of parameters perturbation and load disturbance of PMSM, a extended state observer (ESO) is constructed to observe the dynamic observation of total system perturbation and conduct feedforward compensation; theoretical analysis shows that the closed-loop system is global bounded stability; The simulated results show that the static and dynamic performance of the PMSM speed servo control system can be significantly improved by using the proposed method.

关键词： Electronic mail Sliding mode control Servomotors Observers Zirconium Digital control Educational institutions

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Reliability prediction method of hydraulic system by fuzzy theory

Reliability prediction method of hydraulic system by fuzzy t...

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6th IFAC Symposium on Mechatronic Systems, MECH 2013

作者： Chen, Dongning Yao, Chengyu Feng, Zhongkui Hebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control Yanshan University Qinhuangdao China Key Laboratory of Advanced Forging and Stamping Technology and Science Yanshan University Ministry of Education of China Qinhuangdao China Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao China

ISBN: (纸本)9783902823311

The hydraulic system's reliability is a key factor to ensure the reliable operation of equipment and it is very important to evaluate reliability of hydraulic system. The paper describes a reliability prediction method that may be used to evaluate the reliability of hydraulic systems for industrial applications. The proposed method takes advantage of fuzzy set theory. The aim of this method is to minimize the deficiencies of the traditional reliability prediction methods treating a failure rate as fixed value due to insufficiency practice data. Triangular fuzzy number and Gaussian fuzzy number are used in the application of this prediction method, where environmental factor, derating factor, and other factors are considered. Finally, an example of type crane's hydraulic system is given to verify the feasibility and practicability of the method. © 2013 IFAC.

关键词： Fuzzy set theory

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