摘要
研究系统存在不确定性的大柔性飞行器的姿态跟踪控制问题.针对高阶大柔性飞行器模型,使用平衡实现方法对其降阶,并通过奇异值对比分析系统降阶前后特性.基于降阶模型,设计LQR-PI控制器作为基线控制器.考虑不确定性,利用李雅普诺夫稳定性理论设计模型参考自适应控制器,并对比两种方法的控制效果.仿真结果显示,所提方案对包含不确定性的系统具有较好的控制效果,能使系统完成期望的姿态跟踪目标.
The adaptive attitude control was examined for very flexible aircraft（ VFA） with uncertainty. The high order of VFA model was reduced by a balanced realization approach,and the singular values of the original model and the reduced-order model were investigated and compared. Based on the reduced-order model,a LQR-PI controller was designed as baseline controller. Considering uncertainty,a model reference adaptive controller was designed by lyapunov stability theory and compared with LQR-PI controller. Simulation results show that the presented scheme has better control effect for VFA with uncertainty,and make the system perform desired attitude motion.
出处
《动力学与控制学报》
2017年第4期350-355,共6页
Journal of Dynamics and Control
基金
国家自然科学基金(11572149)~~
关键词
大柔性飞行器
平衡实现
最优控制
模型参考自适应控制
very flexible aircraft
balanced realization
optimal control
model reference adaptive control
