两段不对称非线性系统的自适应控制新算法

针对两段不对称非线性系统，分别就非线性部分已知和未知两种情形提出了基于极点配置控制策略的自适应控制新算法，非线性部分已知时，该算法不仅能保证全局稳定性，而且能渐近跟踪一大类参考输出，非线性部分未知时，提出了一种新的辨识方法，使原耦合在一起的线性动态部分和非线性静态部分的参数分开进行辨识，新算法可用于非最小相位系统，并且可辨识的参数少，因此减小了计算量，仿真表明新算法的良好性能。

New Adaptive Control Algorithms of Systems with a Two-segment Asymmetric Nonlinearity

New adaptive control algorithms based on pole placement control strategy are proposed for to be used on a two-segment asymmetric nonlinear systems with knownor unknown nonlinear parts respectively. When the nonlinear parts are known, the adaptive control algorithms in this paper can not only ensure global stability, but also track asymptotically a large class of reference outputs. When the nonlinear parts are unknown, a new identification algorithm is put forward which can idenfy the coupled parameters of the linear dynamic parts and nonlinear static parts. The adaptive control algorithms in this paper can be applied to nonminimum phase plants, and they need to identify less parameters, therefore they reduce computation burden. Simulation exam pies have been given to show the good properties of the new adaptive control algorithms.