飞机全电防滑刹车系统稳定动态面控制

发布时间：2018-12-10 14:10

【摘要】：针对机电作动的飞机防滑刹车模型具有的高阶非线性及参数时变特点,提出一种基于障碍Lyapunov函数的动态面控制方法,实现对滑移率的上界约束,保障防滑刹车系统的稳定性。建立飞机刹车动力学模型,与机电作动器的数学模型联立得到整体刹车系统的状态空间模型,并合理简化为严格反馈形式。将刹车系统的控制稳定性问题等效描述为含输出约束的非线性系统镇定问题,设计动态面控制律并通过Lyapunov方法证明滑移率跟踪误差半全局一致最终有界,刹车工作点始终保持在稳定区域内。仿真结果表明,本文所提控制策略具有稳定性优势,且改善了传统控制存在的中低速时滑移率振荡问题,控制效果有显著提升。
[Abstract]:In view of the high order nonlinearity and the time-varying parameters of the aircraft anti-skid braking model with electromechanical actuation, a dynamic surface control method based on obstacle Lyapunov function is proposed to realize the upper bound constraint on the slip ratio and to ensure the stability of the anti-skid braking system. The dynamic model of aircraft brake is established, and the state space model of the whole braking system is obtained by combining with the mathematical model of the electromechanical actuator, which is reduced to a strict feedback form. The control stability problem of brake system is described as the stabilization problem of nonlinear system with output constraints. The dynamic surface control law is designed and the semi-global uniformly bounded slip rate tracking error is proved by Lyapunov method. The brake point is always kept in the stable area. The simulation results show that the proposed control strategy has the advantage of stability and improves the slippage rate oscillation problem existing in the traditional control at medium and low speeds, and the control effect is improved significantly.
【作者单位】：西北工业大学自动化学院;
【基金】：国家自然科学基金(51407143) 高等学校博士学科点专项科研基金(20136102120049) 中央高校基本科研业务费专项资金(3102014JCQ01066) 陕西省自然科学基础研究计划青年项目(2014JQ7264);陕西省自然科学基础研究计划面上项目(2015JM5227) 陕西省微特电机及驱动技术重点实验室开放基金(2013SSJ10022)资助课题
【分类号】：V227

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