摘要
针对传统动态逆鲁棒性差的特点,设计了基于增量动态逆的高超声速飞行器的再入鲁棒控制律。首先建立了高超声速飞行器快慢两个回路的控制模型,通过非线性干扰观测器估计再入动力学外来的强干扰,进行前馈补偿;然后通过状态速率反馈,对快慢回路分别设计了增量动态逆控制律,期望动力学采用了抗干扰能力和收敛速度快的非光滑控制律,提高了系统的鲁棒性;引入了线性跟踪-微分器解决了增量动态逆控制律所需状态速率无法测量的问题。最后,通过仿真验证了所提算法的有效性。
The incremental dynamic inverse robust control law was designed for hypersonic reentry vehicle.Firsttwo loop control modelsfast and slowwere established for the hypersonic vehicle.The reentry foreign strong disturbance was estimated through nonlinear disturbance observer for feedforward compensation.Thenthe incremental dynamic inversion control laws were designed respectively for the fast and slow loop through the state rate feedback.Nonsmooth control lawwith high antiinterference ability and fast convergence speedwas used to improve the system robustness.Finallythe linear trackingdifferentiator was introduced to solve the problem that the state rate required by the incremental dynamic inversion control law cant be measured.The simulation verifies the effectiveness of the proposed algorithm.
出处
《电光与控制》
北大核心
2013年第11期16-20,共5页
Electronics Optics & Control
基金
国家自然科学基金(61203014)
江苏省自然科学基金(BK2012283)
江苏高校优势学科建设工程资助项目
关键词
高超声速飞行器
再入
增量动态逆
干扰观测器
非光滑控制
hypersonic vehicle
reentry
incremental dynamic inverse
disturbance observer
non-smooth control