电传飞控系统的蒙特卡罗分析与设计  

Monte Carlo Analysis and Design of FBW Flight Control System

作　　者：杨云[1] 张平[1] 

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100083

出　　处：《航空学报》2008年第B05期85-90,共6页Acta Aeronautica et Astronautica Sinica

基　　金：武器装备基金

摘　　要：将蒙特卡罗方法应用在一个纵向电传飞行控制系统纵向控制增稳设计和仿真验证过程中。设计过程包括C*模型跟踪最优设计和蒙特卡罗仿真,仿真的目标参数为纵向操纵期望参数(CAP)和延迟时间。在仿真中引入了包括设计因素、大气扰动和气动导数变化等随机因素。仿真结果表明:最优设计在大多数情况下可以满足一级飞行品质要求。影响飞行品质的主要因素是设计因素和大气扰动,特别是C*理想模型自然振荡频率数值过小会直接影响系统的性能,气动导数的变化对系统影响不大。设计过程也表明,蒙特卡罗方法可以有效支持和优化电传飞控系统的设计和验证过程。Monte Carlo method is employed in longitudinal stability enhanced control law design and simulation process ofa FBW flight control system in this paper. The study process includes C^＊ model track optimal design and Monte Carlo simulation. The simulation reference parameters are control anticipation parameter （CAP） and longitudinal delay time. Stochastic factors such as designing parameter, atmosphere disturbance and aerodynamic derivative variation are introduced in the simulation. The study results illustrate that the optimal design satisfy the first level flyhag quality requirements ha most cases and the main factors influencing the flying quality are the designing parameters and atmospheric disturbance. Especially the natural oscillatory frequency con of C^＊ model will direct degrade the system performance if it is too small. Fluctuation of aerodynamic derivatives has little influence on the system. This design process shows also the Monte Carlo simulation can effectively support and optimize the design and validation of FBW flight control system.

关 键 词：电传飞控系统 蒙特卡罗仿真 飞行品质 大气扰动 最优设计 

分 类 号：V249[航空宇航科学与技术—飞行器设计]