摘要
对飞机座舱舒适性进行优化控制,可保证机组成员和乘客拥有安全、健康和舒适的环境。进行飞机座舱舒适性控制时,应构造飞机座舱环境优化控制目标函数,并获取飞机座舱环境最优控制参数,完成对飞机座舱舒适性优化控制,但是传统方法通过及孙输入输出变量的隶属度函数参数,对飞机座舱环境进行控制,但是没有得到准确的座舱舒适性控制目标函数和最优控制参数,存在控制响应性差、效果差的问题。提出一种采用模糊理论的飞机座舱舒适性优化控制方法。上述方法融合模糊理论计算座舱压力变化率,根据飞机高度垂直变化率、飞行高度以及座舱压力制度预定座舱压力变化率目标及限制值,组建座舱压力线性化方程,计算出控制系统的输出误差与误差间一阶微分变化,实时更改比例积分微分控制器参数,得到交换器热边流动长度、冷边流动长度和高度之间比例关系,计算出系统熵产与给定初始条件的函数关系,给出飞机座舱环境优化控制目标函数,并利用NSGA-Ⅱ方法计算出飞机座舱环境最优控制参数,完成对飞机座舱舒适性优化控制。仿真结果表明,所提方法对飞机环境控制系统的优化设计响应性强,具有一定指导作用。
It can ensure that the crewmembers and passengers have a safe, healthy, and comfortable environment to make optimization control for comfort of aircraft cabin. Traditional method controls the aircraft cabin environment through subjection function parameter of input-output variable, It cannot obtain the accurate control objective function of aircraft cabin comfort and optimum control parameter. Therefore, it leads to poor control response and effect. In this paper, we propose an optimization control method for comfort of aircraft cabin based on the fuzzy theory. Firstly, the pressure change rate of cabin is calculated by integrating with the fuzzy theory and the change rate objective of cabin pressure and limiting value are predetermined according to the vertical change rate of aircraft height, flight height and cabin pressure system. Then, the linearization function of cabin pressure is built and the output error of control system and first order differential variation among the errors are worked out. Moreover, the controller parameter of proportional integral differential is altered and the proportional relation among the flow length on hot side, flow length on cold side and height is obtained. The function relationship between the system entropy generation and given initial condition is also worked out, and the optimal control objective function of aircraft cabin environment is given out. Finally, the NSGA- II method is used to work out the optimal control parameter, and the optimization control for comfort of aircraft cabin is completed. The simulation results show that the method has powerful responsiveness for optimization control of aircraft environment controlling system.
出处
《计算机仿真》
北大核心
2017年第1期36-40,共5页
Computer Simulation
关键词
飞机座舱
环境
控制
模糊理论
舒适性
Aircraft cabin
Environment
Control
Fuzzy theory
Comfort
