一种参数摄动范围未知系统的鲁棒估计方法

Robust State Estimation For Systems with Uncertainties of Unknown Bound

对于具有参数摄动但其摄动范围未知的动态系统的状态估计问题 ,通过把参数摄动归并到扰动中去 ,则可作为确定性系统对待 .由此得出的Riccati不等式是和一些常数有关的 ,若此Riccati不等式存在正定对称解 ,则可参数化状态估计器增益矩阵 .计算实例表明 ,当参数摄动范围未知时 ,这是一种有效的设计方法 .

The problem of state estimation for systems with uncertainties of unknown bound can be treated as determinant systems via ascribing uncertainty to disturbance.A parameter dependent Riccati inequality can be used to parametrize the estimator gain matrix.Numerical results show it is an effective way to solve the estimation problem of uncertain systems with unknown bound.