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drive control of Spiral Wave and Turbulence by a Target Wave in CGLE

Communications in Theoretical Physics 2013年第10期60卷 439-444页

作者：向秀桥施保昌何耀耀 Faculty of Information Engineering China University of Geosciences School of Mathematics and Statistics Huazhong University of Science and Technology School of Management Hefei University of Technology

Suppression of spiral wave and turbulence in the complex Cinzburg-Landau equation （CCLE） plays a prominent role in nonlinear science and complex dynamical system. In this paper, the nonlinear behavior of the proposed drive-response system, which consists of two coupled OGLEs, is investigated and controlled by a state error feedback controller with the lattice Boltzmann method. First, spiral wave appropriate parameters of the response system under the no-flux and turbulence are, respectively, generated by selecting boundary and perpendicular gradient initial conditions. Then, based on the random initial condition, the target wave yielded by introducing spatially localized inhomogeneity into the drive system is applied on the above response system. The numerical simulation results show that the spiral wave and turbulence existing in the response system could be successfully eliminated by the target wave in the drive system during a short evolution time. Furthermore, it turns out that the transient time for the drive course is related to the control intensity imposed on the whole media.

关键词： lattice Boltzmann method nonlinear system complex Ginzburg-Landau equation spiral wave drive control

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Papermaking Process Paper Web Tension Measurement and control

Papermaking Process Paper Web Tension Measurement and Contro...

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第24届中国控制与决策会议

作者： Zhongjun Xiao 1. School of Electrical Engineering and Automation, Shandong Polytechnic University, Jinan, 250353

According to the analysis of paper web tension pressductor, the application of tension control in the paper-machine’s drive control system is performed. By the use of pressductor web tension is measured and finely characterized the tension signal. Then fixed with speed control, web tension control with closed-loop feedback has great effect to improve the quality, efficiency and reliability of the control system and paper product as well.

关键词： tension control drive control pressductor speed chain control

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