[1]吕恩海,赵长安.QFT/μ控制器设计法及其在飞行器控制中的应用[J].南京理工大学学报(自然科学版),2006,(03):296-301.
 Lü En-hai,ZHAO Chang-an.Combined QFT/μ Controller Design Method and Its Application in Aircraft Control[J].Journal of Nanjing University of Science and Technology,2006,(03):296-301.
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QFT/μ控制器设计法及其在飞行器控制中的应用
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2006年03期
页码:
296-301
栏目:
出版日期:
2006-06-30

文章信息/Info

Title:
Combined QFT/μ Controller Design Method and Its Application in Aircraft Control
作者:
吕恩海;赵长安;
哈尔滨工业大学自动控制系, 黑龙江哈尔滨150001
Author(s):
Lü En-haiZHAO Chang-an
Department of Automatic Control,Harbin Institute of Technology,Harbin 150001,China
关键词:
定量反馈理论 L-综合 动态逆
Keywords:
quan tita tive feedback theory (QFT) L-Synthesis dynam ic inversion
分类号:
V 249. 1
摘要:
针对具有大的不确定性和强非线性性的被控对象,提出了将定量反馈理论QFT与μ-综合法相结合的控制器设计算法。应用动态逆方法处理对象非线性不确定性,基于H-infinity优化方法设计初始控制器,当μ-综合对闭环权函数进行调整难以有效改进控制品质时,依据开环性能指标边界采用QFT方法对初始控制器进行调整,显示出QFT开环调整具有透明性和频段剪裁性。针对具有复杂非线性特性的F-16攻角控制问题,在空速变化50~150 m/s、气动数据变化±20%的范围内,实现对攻角的大范围精确控制。与基本QFT控制器相比,仿真结果表明所设计系统具有优良的响应特性。
Abstract:
A comb ined QFT /L contro ller designmethod for the plant w ith uncerta inty and high nonlinearity is proposed in this paper. A dynam ic inversion ( DI) m ethod is used to treat plant. s nonlinear uncertain ty, and then a method o f incorpo rating QFT ( Quant itat ive feedback theory) w ith L technique is developed. Based on the L-synthesis, an initial contro ller is g iven. W hen the contro ller qua lity can not be improved effectively by tuning closed-loop w e ighting function, QFT is used to shape an open-loop transfer function according to the perfo rmance index bounds. The shaping has transparency in N icho ls Chart and ta ilor-characteristic on special frequencies. In the light of ang le o f attack ( AOA ) con tro l of F-16 w ith comp licated and non linear features, the designed contro l law demonstrates perfect performance by fo llow ing AOA commands at flight speeds rag ing from 53 to 150m / s. Robustness is verified by ? 20% var iat ions in p itchingmoment derivatives. The simulation resu lts show that the proposed method has perfect responses compared w ith an origina l controller.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 吕恩海( 1976- ), 男, 黑龙江哈尔滨人, 博士生, 主要研究方向: QFT、飞行器控制等, E-m a il:lvenha@isina. com; 赵长安( 1936- ), 男, 湖南资兴人, 教授, 博士生导师, 主要研究方向: 鲁棒控制、最优控制、非线性控制理论及应用等。
更新日期/Last Update: 2006-06-30