引用本文:管成, 潘双夏.含有非线性不确定参数的电液系统滑模自适应控制[J].控制理论与应用,2008,25(2):261~267.[点击复制]
GUAN Cheng, PAN Shuang-xia.Sliding mode adaptive control of electro-hydraulic system with nonlinear unknown parameters[J].Control Theory and Technology,2008,25(2):261~267.[点击复制]
含有非线性不确定参数的电液系统滑模自适应控制
Sliding mode adaptive control of electro-hydraulic system with nonlinear unknown parameters
摘要点击 1207  全文点击 1203  投稿时间：2006-05-10  修订日期：2007-02-02
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DOI编号  
  2008,25(2):261-267
中文关键词  自适应控制；滑模控制  电液控制系统  非线性不确定参数  Lyapunov 方法
英文关键词  adaptive control  sliding control  electro-hydraulic system  nonlinear unknown parameter  Lyapunov stability
基金项目  中国博士后基金资助项目(20060401038) .
作者单位
管成, 潘双夏 浙江大学机械设计研究所, 浙江杭州310027 
中文摘要
      针对含有非线性不确定参数的电液控制系统, 提出了一种滑模自适应控制方法. 该控制方法主要是为了解决由于初始控制容积的不确定性而引起的, 非线性不确定参数自适应律设计的难题. 其主要特点为, 通过定义一个新型的特Lyapunov 函数, 进而构建系统的自适应控制器及参数自适应律, 并结合滑模控制方法及一种简单的鲁棒设计方法, 给出整个电液系统的滑模自适应控制器, 及所有不确定参数的自适应律. 试验结果表明, 采用该控制方法能够取得良好的性能, 尤其可以补偿非线性不确定参数对系统的影响.
英文摘要
      An adaptive sliding control method is proposed for an electro-hydraulic system with nonlinear unknown parameters. The proposed control method is for designing a nonlinear adaptive controller with adaptation laws to compensate the nonlinear uncertain parameters due to the uncertainty of the original controlled volumes. Firstly, we developed a novel type Lyapunov function to construct an asymptotically stable adaptive controller and present the adaptation laws of nonlinear uncertain parameters. Then, by combining sliding mode control with a simple robust method, the sliding mode adaptive controller with parameters update laws of the electro-hydraulic system is designed, which can compensate the system for uncertain nonlinearities, linear uncertain parameters and especially nonlinear uncertain parameters resulted from the uncertainty of the original controlled volumes. Finally, the experimental results show that the nonlinear control algorithm, together with the adaptation scheme, gives a good performance for the specified tracking task in the presence of unknown nonlinear parameters.