一种基于简单自适应控制的闭环H_∞滤波算法的验证与改进  

Validation and Improvement for a Closed-Loop H∞Filter Algorithm Based on Simplified Adaptive Control

作　　者：程俊华[1] 王青[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《信息与控制》2012年第6期657-662,共6页Information and Control

摘　　要：采用固定积分变量的方法,对基于简单自适应算法(SAC)的闭环H∞滤波算法进行了改进,增强了经典H∞滤波的动态跟踪特性,确保了该算法的稳定性,同时初步分析了这种新算法提高鲁棒性的原理.通过建模仿真及比较分析表明:与常规H∞滤波器相比,当建模误差存在或者系统模型统计特性未知时,采用改进的简单自适应算法H∞滤波器能够改善滤波的动态特性,降低H∞滤波器对噪声的敏感性,精度更高.A closed-loop H∞ filter algorithm based on the simplified adaptive control （SAC） method is improved by using the fixed integral variable. The filter enhances the dynamic tracking properties of the traditional H∞ filters and ensures the stability of the algorithm. And the robustness principle of the new filter is also analyzed. The modeling simulation and the comparative analysis show that the proposed H∞ filter can enhance dynamic character, reduce noise＇s sensibility and has higher accuracy than the normal H∞ filters when there are modeling errors or when the stochastic characteristic of the system model is unknown.

关 键 词：H∞滤波 简单自适应控制 严格正实 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]