非线性确定性系统的鲁棒自适应控制器  

A Robust Self-adaptive Controller on Non-linear Definite Systems

作　　者：侯晓秋[1] 吴俊杰[1] 

机构地区：[1]黑龙江科技学院自动化工程系,黑龙江鸡西158105

出　　处：《黑龙江科技学院学报》2003年第2期54-57,共4页Journal of Heilongjiang Institute of Science and Technology

摘　　要：NARX模型的最小预报误差自适应控制器算法,存在着控制输入偏离以原点为收敛域中心的收敛问题,严重时将出现数值发散现象,系统是BIBO不稳定的。针对这种情况,提出了一种改进的控制输入准则函数和鲁棒自适应控制策略,给出了NARX模型基于该准则函数的一种最小预报误差自适应控制器算法,及使系统无稳态偏差选取准则函数的限制条件,解决了系统存在稳态偏差的问题,同时给出了仿真结果。A calculative method of self-adaptive controller with prediction error in the NARX model suffers from the convergence problems of numerical value diffusive phenomena in serious time. The system is unstable in BIBO. An improving norm function to control input and a robust self-adaptive control strategy is pointed out. A calculative method of self-adaptive controller with prediction error in the NARX model based on this norm function is introduced. The limit conditions of selection for the norm function to give the system the freedom of the stable deviation are introduced. The stable deviation problems in the system based on some control calculative methods is solved. The simulation results are put forward at the same time.

关 键 词：自适应控制 非线性控制 收敛性 非线性参数估计 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]