飞机拦阻系统的改进及建模分析

Improvement and Modeling Analysis of Aircraft Arresting System

针对纯机械式液压拦阻系统不能对不同质量和降落速度的飞机快速有效拦阻的问题,对原来的系统进行改进,采用电液伺服阀替换原来的凸轮阀和针阀,采用伺服电机控制的液压泵替换原来的制动盘传动比控制的液压泵,建立改进后的飞机拦阻系统的数学模型,并用MATLAB/Simulink建立仿真模型,对飞机速度、飞机拦停距离和飞机过载等受控参数的变化规律进行了仿真分析,模拟了飞机拦阻系统的工作过程,对拦阻系统的性能进行了仿真验证。结果表明:改进的拦阻系统对多种型号飞机在拦阻距离、飞机加速度、飞机速度、拦阻力和刹车压力均满足预设的拦阻指标且曲线平稳、没有大的突变。

A purely mechanical hydraulic interception system cannot quickly and effectively intercept aircraft with different mass and landing speeds.In response to the problem,the original system was improved by replacing the original cam valve and needle valve with an electro-hydraulic servo valve,and replacing the original brake disc transmission ratio controlled hydraulic pump with a servo motor controlled hydraulic pump.A mathematical model of the improved aircraft interception system was established,and a simulation model was established using the MATLAB/Simulink,the simulation analysis was conducted on the variation patterns of controlled parameters such as aircraft speed,aircraft stopping distance,and aircraft overload.The working process of the aircraft arresting system was simulated,and the performance of the arresting system was verified through simulation.The results show that the improved arresting system meets the preset arresting indicators for various types of aircraft in terms of arresting distance,aircraft acceleration,aircraft speed,arresting resistance and braking pressure,and the curves are stable without significant abrupt changes.