摘要
针对吸气式高超声速飞行器,提出了一种具有极点约束的非脆弱最优H2/LQR(线性二次型调节器)控制方法.根据吸气式高超声速飞行器的非线性纵向运动方程,推出了一种新的飞行器线性不确定模型,为吸气式高超声速飞行器设计了一种多目标非脆弱控制器.在控制器的设计中,不但考虑了系统的极点配置、最优H2性能和鲁棒保性能3种指标,而且兼顾了因飞行条件不确定性和建模误差引起的控制器增益的变化,利用线性矩阵不等式方法推导了多目标非脆弱控制器的存在条件.仿真实例说明了非脆弱控制器在高超声速飞行器控制中的优越性和有效性.
A kind of robust mixed non-fragile optimal H2/LQR control with regional pole placement was proposed for an air-breathing hypersonic vehicle（AHV）.A new linear uncertain model was developed according to a nonlinear longitudinal model of an AHV and then a multi-objective non-fragile controller was designed that includes regional pole placement,robust guaranteed cost control and optimal H_2 control performance indexes for the proposed linear uncertain model.The paper also took the gain variation of the controller into account due to parametric uncertainties of an AHV flight condition and the errors existed in modeling.The existed conditions of the multi-objective non-fragile controller were deduction by linear matrix inequalities（LMIs）.Finally,the simulation comparisons between non-fragile controller and traditional controller that without considering the gain variation illustrate the advantages and effectiveness of our approach.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2011年第3期423-428,共6页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金资助项目(60953001
91016004
61004046)
