摘要
针对常规输出反馈特征结构配置方法不能完全保证闭环系统稳定性的问题,提出一种改进的输出反馈特征结构配置方法.该改进的算法通过引入二次型性能指标,将闭环系统的稳定性问题转化为线性二次型最优控制问题,从而保证闭环系统的稳定性;考虑到采用特征结构配置方法所设计的闭环系统鲁棒性不强,给出保证系统鲁棒性的条件,以解决系统鲁棒性问题.最后,通过在飞翼飞机上的仿真结果验证了所提出算法的有效性.
An improved eigenstructure assignment algorithm with output feedback is presented to solve the problem that the general eigenstructure assignment with output feedback can＇t completely guarantee the stability of the closed-loop system.In this improved algorithm, the quadratic performance index is introduced to convert the problem of the closed-loop stability into a linear quadratic optimal control problem, which ensures the stability of the closed-loop system. Taking into account that the closed-loop system designed by eigenstructure assignment has a poor robustness, the condition for ensuring the system robustness is given to solve the robust problem of the closed-loop system. Finally, simulation results on a flying wing aircraft show the effectiveness of the eigenstructure assignment proposed.
出处
《控制与决策》
EI
CSCD
北大核心
2016年第6期1111-1117,共7页
Control and Decision
基金
陕西省自然科学基金项目(2014JQ8342)
关键词
飞翼飞机
特征结构配置
稳定性
鲁棒性
flying wing aircraft
eigenstructure assignment
stability
robustness
