飞机失事后救生舱氧气系统的数学建模仿真  

Mathematical Modeling and Simulation of Oxygen System in Capsule After Plane Crash

作　　者：潘洁[1] 

机构地区：[1]安徽理工大学理学院,安徽淮南232007

出　　处：《计算机仿真》2014年第11期92-95,共4页Computer Simulation

基　　金：安徽省自然科学(KJ2002Z081)

摘　　要：建立飞机中救生舱氧气控制模型,可实现飞机失事后救生舱中氧气浓度得精确控制。飞机失事后面临的破坏性和环境都是大随机事件,救生舱氧气系统的控制需要对压力、气体温度和氧气系统参数的时间差数据的准确掌握,实现氧气系统性能的定量评估,由于参数容易受到失事时外部环境的影响,无法预先设定。传统的氧气系统控制模型无法准确评估参数在恶化环境下的变化过程,仅能通过设定固定参数评估短期机组氧气性能变化情况,存在较大缺陷。提出采用改进遗传算法的自抗扰控制器氧气系统参数优化模型,塑造考虑控制约束的自抗扰控制器参数优化设计目标函数,并用一种改进自适应混沌遗传算法对氧气系统参数进行整定,实现失事飞机救生舱内氧气系统的有效控制。仿真结果表明,所提控制模型增强了系统的动态性和静态性,可有效应对系统参数的动态性,具有较高得控制性能。Traditional oxygen system control method cannot accurately assess the change of parameters in a deteri- orating environment, which can only evaluate the short crew oxygen performance changes by setting fixed parameter. A parameter optimization model of oxygen system is proposed based on improved genetic algorithm and ADRC, the objective function is designed for the ADRC parameter optimization with control constraints, an improved adaptive chaotic genetic algorithm is presented for the setting of oxygen system parameters, and the effective controX of the oxygen system within the capsule is realized. The simulation results show that the proposed control method can effectively deal with the dynamic parameters, and has high control performance.

关 键 词：飞机失事 救生舱 氧气系统 数学建模 

分 类 号：F127[经济管理—世界经济]