基于模糊免疫PID控制的飞机防滞刹车研究

Research on Aircraft Antiskid Braking System Based on Fuzzy Immune PID

研究飞机防滞刹车系统优化控制问题,由于飞机防滞刹车系统存在非线性特点,影响刹车系统的稳定性和控制的性能,造成飞机的着陆安全控制的较大困难。采用传统PID(比例、积分、微分)控制的飞机刹车参数整定困难,刹车效率低下,系统的鲁棒性差,现代飞机的起降重量与速度越来越大,在刹车低速阶段存在机轮抱死打滑现象,影响降落安全。针对于此,使用模糊免疫PID控制方法,以期改善飞机刹车低速阶段性能。仿真结果表明,可以较显著的改善飞机刹车的低速阶段性能,减少刹车低速阶段机轮打滑时间,缩短刹车距离,为飞机防滞刹车优化系统的设计提供了可靠依据。

Airplane antiskid braking system is a kind of non-linear system.It is important to landing security and difficult to achieve highly-efficient control with many factors.The antiskid braking system based on traditional Proportion Integration Differentiation（PID） control is with low efficiency and weak robustness,and its parameters are difficult to fix.The weight of the modern aircraft has become heavier and heavier and the landing speed higher and higher.There is skid existing on the low speed phase during braking on the plane.In this article,the author proposed a Fuzzy Immune PID control method in order to approve the low speed performances of braking.The simultion results show that this method improves the low speed performances prominently,reduces the skid time and decreases the braking distanse..