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国家自然科学基金(61322303)

作品数:3 被引量:10H指数:2
相关作者:于彩霞华长春更多>>
相关机构:燕山大学更多>>
发文基金:国家自然科学基金国家教育部博士点基金河北省应用基础研究计划更多>>
相关领域:自动化与计算机技术更多>>

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Finite-time Control for a Class of Networked Control Systems with Short Time-varying Delays and Sampling Jitter被引量:6
2015年
This paper is concerned with the finite-time control problem for a class of networked control systems(NCSs) with short time-varying delays and sampling jitter.Considering a state feedback controller,the closed-loop NCS is described as a discrete-time linear system model,and the uncertain parts reflect the effect of the the network-induced delays and short sampling jitter of the system dynamics.Then a robust approach is proposed to solve the finite-time stability and stabilization problems for the considered NCS.An illustrative example is provided to demonstrate the effectiveness of the proposed theoretical results.
Chang-Chun HuaShao-Chong YuXin-Ping Guan
Robust Output Feedback Control for Fractional Order Nonlinear Systems with Time-varying Delays被引量:2
2016年
Robust controller design problem is investigated for a class of fractional order nonlinear systems with time varying delays. Firstly, a reduced-order observer is designed. Then, an output feedback controller is designed. Both the designed observer and controller are independent of time delays. By choosing appropriate Lyapunov functions, we prove the designed controller can render the fractional order system asymptotically stable. A simulation example is given to verify the effectiveness of the proposed approach. © 2014 Chinese Association of Automation.
Changchun HuaTong ZhangYafeng LiXinping Guan
关键词:ALGEBRABACKSTEPPING
含有测量时延摄动的冷轧机厚控系统控制器设计被引量:2
2014年
针对冷带轧机液压厚控(Hydraulic automatic gauge control,HAGC)系统中带材厚度输出存在测量时延摄动以及系统存在不确定性的情况,提出一种新的控制器设计策略,以提高实际工作中冷带轧机板带材的板厚精度。基于轧机液压厚控系统各环节的方程式,给出具有测量时延摄动和不确定项的数学模型,并将该测量时延转化为时变输入时延考虑,建立最终的HAGC系统模型。针对该模型设计一种新的控制器,并利用Lyapunov稳定性理论对所设计的控制器进行严格的理论证明,得出系统的指数稳定性。针对1700单机架轧机进行Matlab仿真,将所提出的控制器与传统比例积分微分(Proportional integral derivative,PID)控制器的仿真结果进行对比,说明了该控制方法能够克服时延及不确定性的影响,比传统的PID控制器具有更加良好的效果,进一步验证了控制器的有效性和优越性。
华长春于彩霞
关键词:控制器设计
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