一类仿射非线性系统的容错控制  

Design of Fault-tolerant Controller for an Affine Non-linear System

作　　者：徐启华[1] 乔国垒[1] 倪立学[1] 

机构地区：[1]淮海工学院电子工程系,江苏连云港222005

出　　处：《淮海工学院学报（自然科学版）》2003年第1期18-21,共4页Journal of Huaihai Institute of Technology:Natural Sciences Edition

摘　　要：提出了针对一类仿射非线性系统的容错控制器设计新方法,通过适当选取非线性系统Brunovsky标准型的加权矩阵,使Riccati型方程的解满足特定的条件,可以保证闭环系统在传感器失效时具有渐进稳定性。用实际算例和仿真结果验证了该方法的有效性。A new design method of faulttolerant controller for an affine nonlinear system is presented. According to the method, a sufficient faulttolerant condition is derived based on a solution of the Riccati equation related to the Brunovsky linear model. Using the faulttolerant condition, a nonlinear state feedback controller is designed to be faulttolerant through iterating gradually the state\|weighted or controlweighted matrix in the Riccati equation. The faulttolerant controller can keep the nonlinear system in asymptotic stability when one or more sensors fail to work. The design method is proved to be very useful and effective with the illustrative examples and simulation results.

关 键 词：仿射非线性系统 容错控制 Brunovsky标准型 加权矩阵 RICCATI型方程 精确线性化 渐进稳定性 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] O231.2[自动化与计算机技术—控制科学与工程]