大型飞机座舱温度控制系统仿真

大型飞机座舱温度控制系统是一个时变、非线性、大时间常数的复杂控制系统,采用传统的控制方法难以获得满意的控制效果.根据系统控制要求,提出了一种新的座舱温度控制方案,系统分为组件温度控制和区域温度控制两级控制.区域温度控制器计算出各区域供气温度的目标值,并选择各区域供气目标温度中最低值作为组件温度控制的目标温度.使用专家比...

Simulation of Large-scale Aircraft Cabin Temperature Control System

A large-scale aircraft cabin temperature control system is a time-varying, nonlinear and big time-constant complex control system, and it is difficult to obtain satisfactory control effect by means of traditional control methods. A new approach for cabin temperature control is proposed in this article based on system control demands. The control system is divided into two parts: cooling pack temperature control and zone temperature control. The zone temperature controller calculates a demand temperature signal for each zone, and chooses the lowest temperature as the demand temperature of the pack temperature controller. The expert proportion-integral-differential(PID) control method is used to design the pack temperature controller, and a temperature control query table based on fuzzy control theory is used to design the zone temperature controller. This new control method is compared with the traditional one by computer simulation, and a dynamical analysis of the control system is conducted for the whole flight process. Simulation results show that this temperature control system is superior to the conventional PID control program. The control system demonstrates small overshoot and high control precision, while the gas temperature and its rate of change meets the requirements.