ADAPTIVE H-INFINITY CONTROL OF A CLASS OF UNCERTAIN NONLINEAR SYSTEMS

It is concerned with the problem of disturbance attenuation with stability for uncertain nonlinear systems by adaptive output feedback. By a partial-state observer and Backstepping technique, an adaptive output feedback controller was constructed, which can solve the standard gain disturbance attenuation problem with internal stability.

An Anisotropic Posteriori Error Estimator of Bilinear Element

这份报纸的主要目的是第一给一个各向异性的 posteriori 错误 estimator.We 用一些新奇途径和技术在各向异性的 meshes.By 下面为第二个顺序问题学习双线性的有限元素的集中，没有整齐假设和伪制服假设要求，最佳的 errorestimates 和一些 superconvergence 结果在 meshes.Then 上被获得，基于这些结果，我们为第二个问题给各向异性的 posteriori 错误估计。