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第30届中国控制与决策会议

作者： Hu Zhongquan Zhou Zhen Wang Hongbin Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University

To solve the problem of premature convergence and search stagnation in traditional differential algorithm, this paper presents an adaptive dual model differential evolution algorithm based on cloud model(ADDEC). The variation model of ADDEC is produced by combining basic variation with cloud variation. And the adaptive operators are referenced respectively for scale factor and interactive probability during the operation of variation and crossover. The robustness and the convergence rate of the algorithm are enhanced. Moreover the relationship between global search and local search of the algorithm is improved. The diversity of the population is guaranteed at the same time. It is tested by typical high dimension benchmark function and compared with other algorithms, and the results show that the ADDEC has better precision, high convergence speed and makes it easy to jump out the local optimal solution.

关键词： Differential evolution algorithm Cloud model Evolution strategy Adaptive

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Bearing fault detection and diagnosis of a wind turbine

Bearing fault detection and diagnosis of a wind turbine

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International Conference on Consumer Electronics, Communications and Networks

作者： Yang, Shenggang Li, Xiaoli Liang, Ming Key Lab. of Industrial Computer Control Engineering of Hebei Province Institute of Electrical Engineering Yanshan University Qinhuangdao 066004 China Department of Mechanical Engineering University of Ottawa 770 King Edward Avenue Ottawa ON Canada

ISBN: (纸本)9781612844572

The most commonly used components in a wind turbine are bearings which failure could lead to malfunction and ultimately complete stall of a mission-critical equipment. Hence, bearing Fault Detection is an imperative part of preventive maintenance procedures of a wind turbine. This paper presents a Free Parameter method to implement bearing fault diagnosis. This method extracts the amplitude and frequency modulations of the vibration signals that measure from a wind turbine system. As the amplitude demodulation is inherent in it, the fault frequency will be detected from the spectrum of the signal. Simulated signal and experimental data has validated the effectiveness of this method. © 2011 IEEE.

关键词： Wind turbines

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Cooperative Spectrum Sensing Based on Double Thresholds Energy Detection over Imperfect Reporting Channels

Cooperative Spectrum Sensing Based on Double Thresholds Ener...

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

作者： Zi Zhang Xinbin Li Zhixin Liu Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University Hebei China

ISBN: (纸本)9781467377249

In this paper, the problem of hierarchical cooperative spectrum sensing using double thresholds energy detector over imperfect reporting channels will be investigated. When taking error effect on reporting decision into consideration, the sensing performance will be affected. In the proposed scheme, we analyze the performance of hierarchical cooperative spectrum sensing over imperfect reporting channels and the "majority-decision-aided" weighting rule will be used in the fusion center. The analysis and simulation results show that there is a significant performance loss when the decisions based on hierarchical spectrum sensing are transmitted over imperfect reporting channels and the sensing performance is improved by employing the new weighting rule.

关键词： Sensors Cognitive radio Signal to noise ratio computers Propagation losses Reliability Fading channels

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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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Dynamic Event-Triggered Formation control for Multiple Quadrotor UAVs

Dynamic Event-Triggered Formation Control for Multiple Quadr...

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第37届中国控制会议

作者： WANG Hongbin ZHOU Zhen WANG Yueling ZHANG Mingquan XUE Xiaojun Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University

This paper deals with the formation control problem for a group of quadrotor unmanned aerial vehicles（UAVs） through a modified dynamic event-triggered control protocol. The stability proof for the state space origin of the overall closed-loop system is derived from the singular perturbation method and Lyapunov stability theory. An event-triggered formation control protocol in terms of a dynamically varying threshold parameter is delicately carried out while acquiring satisfactory resource efficiency, and Zeno behavior of triggering time sequences is excluded. Finally, simulations on four quadrotor UAVs are given to verify the effectiveness of the theoretical results.

关键词： Formation control Singular perturbation Dynamic event-triggered controller Multiple quadrotor UAVs

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Multi-objective power dispatch based on Q-learning algorithm considering reliability of ICPR

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Journal of Computational Information Systems 2015年第13期11卷 4665-4672页

作者： Wu, Zhongqiang Zhao, Liru Jia, Wenjing Wu, Changhan Wu, Lina Key Lab of Industrial Computer Control Engineering of Hebei Province College of Electric Engineering Yanshan University Qinhuangdao China

To solve the power dispatch problem with intermittent clear power resource (ICPR), the optimal power model which contains wind power, photovoltaic power, coal-fired power and variation load is built. The model allows the most utilization about ICPR, and minimizes the emission of coal-fired plants. On the hand of algorithm, Q-learning algorithm is used to solve this multi objectives power dispatch (MOPD) problem. The optimal solution is obtained by the fuzzy-based definition algorithm from the Pareto-front got by Q-learning algorithm. Simulation on IEEE30 system is curried out to illustrate the efficiency of proposed model and algorithm. ©, 2015, Journal of Computational Information Systems. All right reserved.

关键词： Wind power

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Robust H-infinity space vector model of permanent magnet synchronous motor based on genetic algorithm

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Journal of Computational Information Systems 2014年第14期10卷 5897-5905页

作者： Zang, Huaiquan Qin, Zhe Dai, Yan Key Lab of Industrial Computer Control Engineering of Hebei Province Institute of Electrical and Engineering Yanshan University Qinhuangdao China

A robust H-infinity controller based on genetic algorithm optimization is designed for space vector control model of permanent magnet synchronous motor to improve the speed of tracking performance. A space vector control model of the system has been formed, and a quadrature-axis current loop transfer function based on a dynamic mathematical model of motor combined with decoupling technology is established. In order to obtain a good dynamic performance, the selection of the weighting function uses genetic algorithm to optimize in the process of designing the robust H-infinity. Simulation and analysis results show that the robust controller that based on genetic algorithm effectively improves the tracking performance and robustness of the system. © 2014 by Binary Information Press

关键词： Genetic algorithms

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Nonlinear auto disturbance rejection control for vibration displacement system of continuous cast mold driven by servo motor

Nonlinear auto disturbance rejection control for vibration d...

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Chinese control Conference (CCC)

作者： Huicheng Zheng Le Liu Yiming Fang Qiang Li Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao Hebei CN

Aiming at the problem about the nonlinear function and the mechanical zero offset in the vibration system of continuous casting mold driven by servo motor, a discrete auto disturbance rejection control (ADRC) with nonlinear function processing algorithm is proposed. Firstly, for the nonlinear multi solutions problem existing between rotation angle and displacement of mold, a nonlinear algorithm is proposed to get the practical phase difference of eccentric shaft. The algorithm is achieved by calculating the time difference between ideal time of arrival and actual time of arrival at the same position. Secondly, the mathematical model of vibration system is discretized by using the Euler method, and an ADRC is designed to estimate the eccentric shaft mechanical zero offset and load disturbance, and then compensate and weaken the position error. Finally, the simulation results demonstrate the feasibility of the proposed method.

关键词： Vibrations Servomotors Casting Shafts Process control Algorithm design and analysis Synchronous motors

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Distributed edge control for multi-agent based on binocular vision system

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Journal of Computational Information Systems 2014年第7期10卷 2907-2915页

作者： Shao, Nuan Li, Huiguang Zou, Liying Liu, Le Key Lab. of Industrial Computer Control Engineering of Hebei Province Yanshan University Qinhuangdao 066004 China

For multiple Lagrange systems, the objective of distributed edge control problem is to drive all the followers converge to the edge of the convex hull spanned by the leaders. In this approach, we choose binocular vision system as sensing devices. Firstly, a pseudo-stereo visual model is proposed based on the concept of depth information sensitivity which can be used to provide the generalized coordinates of the leaders for all followers in the image coordinate system. Then, based on this new model, a distributed adaptive control algorithm is designed to compensate for the parametric uncertainties under a directed graph. Finally, the proposed control algorithm is applied to the multi-manipulators grasping control, simulation examples are provided to show the effectiveness of the controller. © 2014 Binary Information Press.

关键词： Multi agent systems

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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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