摘要
针对飞机防滑刹车控制系统中存在的非线性和不确定性,为了提高飞机防滑刹车系统的制动效率,提出了一种基于LuGre摩擦模型的飞机防滑刹车滑模控制方法.设计非线性观测器对摩擦模型中的未知状态变量进行识别,对系统参数进行自适应估计,采用李雅普诺夫方法验证其渐近稳定性.仿真结果表明:该滑模控制方法具有较强的鲁棒性,制动效率高,改善了传统控制方法的低速段机轮深度打滑现象,刹车效率达90%以上,刹车时间26.5s,制动距离949m.
For the dynamic nonlinearity and uncertainty existed in the aircraft anti-skid braking control system, a sliding mode control method based on the LuGre dynamic friction model was proposed. A nonlinear observer was designed to identify the unknown state variables of the friction model, and the system parameters were estimated. Lyapunov method was used to verify the asymptotic stability. Simulations results show that the sliding mode control method based on the LuGre dynamic friction model can achieve an ideal control effect and has a strong robust characteristic, and the braking effi- ciency is greatly improved, as compared with the tire depth skid phenomenon during low-speed periods of the traditional methodrs controlling sliding velocity. The braking efficiency is up to 90%, the bra- king time is 26.5 s and the braking distance is 949 m.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第6期65-69,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
航空科学基金资助项目(05E53025)
关键词
滑模控制
非线性观测器
LuGre摩擦模型
飞机防滑刹车
仿真
sliding mode control
nonlinear observer
LuGre friction model
aircraft anti-skid bra- king
simulation
