舰载飞机自适应模糊直接力着舰控制

Adaptive fuzzy direct lift control of aircraft carrier-based landing

考虑到舰载飞机精密着舰控制需求,针对舰载飞机着舰实际状态模型存在的强时变性、参数不确定性及复杂环境干扰,提出一种基于自适应模糊控制方法的舰载飞机着舰控制系统。调用襟翼通道控制权限,将所提方法应用于襟翼通道实现直接升力控制,并利用模糊系统逼近难以精确描述的舰载飞机六自由度非线性系统模型,实现着舰下滑道的精确跟踪,提高着舰精度。采用李雅普诺夫方法判定所提自适应模糊控制系统的稳定性,考虑舰艉流及甲板运动干扰,模拟舰载飞机着舰仿真环境,利用matlab仿真软件对构造的舰载飞机直接升力着舰控制系统进行数值仿真,并引入蒙特卡洛随机试验方法分别对常规控制方案及自适应模糊直接力控制方案进行着舰点精度统计试验。通过响应曲线及着舰点统计结果证实所提直接力控制方案具有更好的控制效果,相比常规控制方案提升了着舰精确性。

Considering the precise landing demand for carrier-based aircraft flight control,this paper proposes an adaptive fuzzy landing control method for the strong time-varying,parameter uncertainty and various complex coupling in the actual state aircraft model.This method is applied to the flap channel to achieve direct lift control,and the fuzzy system is utilized to approximate the six-degree-of-freedom nonlinear system model of a carrier aircraft that is difficult to accurately describe,to achieve accurate tracking of the landing glideslope,and improve the landing accuracy.Lyapunov method was used to judge the stability of the adaptive fuzzy control algorithm.During the simulation,the airwake and deck motion disturbance were introduced to simulate the landing environment of the aircraft.The effectiveness of the landing control system was verified by the Matlab software.Monte-Carlo random test was utilized to carry out the landing point accuracy for the conventional control scheme and the adaptive fuzzy direct lift control scheme respectively.Through the response curve and landing point statistical results,it is confirmed that the direct lift control scheme has better control effect,and the landing precision has improvement compared with the conventional control scheme.