引用本文:李妍,毛志忠,王琰.自适应动态径向基函数网络死区补偿控制[J].控制理论与应用,2009,26(12):1395~1400.[点击复制]
LI Yan,MAO Zhi-zhong,WANG Yan.Compensation control for dead-zone by adaptive dynamic radial basis function network[J].Control Theory and Technology,2009,26(12):1395~1400.[点击复制]
自适应动态径向基函数网络死区补偿控制
Compensation control for dead-zone by adaptive dynamic radial basis function network
摘要点击 2444  全文点击 948  投稿时间：2008-07-02  修订日期：2009-05-17
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DOI编号  10.7641/j.issn.1000-8152.2009.12.CCTA080684
  2009,26(12):1395-1400
中文关键词  液压系统  死区非线性  动态径向基函数  Lyapunov稳定性
英文关键词  hydraulic system  dead-zone nonlinear  dynamic radial basis function  Lyapunov stability
基金项目  国家高新技术研究发展计划(2007AA04Z 194, 2007AA041401).
作者单位E-mail
李妍* 东北大学 信息科学与工程学院 neu_ly@yahoo.cn 
毛志忠 东北大学 信息科学与工程学院  
王琰 辽阳市发展和改革委员会  
中文摘要
      死区非线性存在于许多实际系统中, 这将影响控制系统的性能, 甚至会造成系统不稳定. 为了补偿动态系统中的死区非线性, 提出一种基于自适应动态径向基函数网络(DRBF)的死区补偿控制方法. 先用自适应DRBF网络在线补偿未知死区产生的不良影响; 对于补偿后的动态系统, 设计一个与DRBF网络并联的线性控制器. 通过Lyapunov方法证明闭环系统的稳定性. 以液压系统为例进行仿真, 仿真结果表明本文方法能有效地消除控制系统的稳态误差, 减少计算量, 而且控制信号没有频繁振荡.
英文摘要
      Dead-zone nonlinearity exists in many practical systems, which deteriorates the performance of control system and even causes the instability of the system. In order to compensate the dead-zone nonlinearity in the dynamic system, a dead-zone compensation control algorithm based on adaptive dynamic radial basis function network(DRBF) is presented for eliminating the undesirable effects caused by the unknown dead-zone. A linear controller paralleled with the DRBF network is designed for the compensated dynamic system. The closed-loop system stability is proved by Lyapunov method. The simulation research was performed in a hydraulic system. The results show that this proposed algorithm effectively eliminates the steady-state error, reduces the computation complexity, and makes the control signal less oscillatory.