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针对常规PID控制难以满足模型不精确、工作环境复杂的非线性时变飞机液冷车温控系统要求的问题,提出了飞机液冷车多模型专家PID温度控制方法。根据飞机保障需求和液冷车工况的不同,分别建立了制冷工况和制热工况下2种数学模型,设计了多模型专家PID温控系统,并利用Simulink软件进行了仿真研究。仿真结果表明:与常规PID控制和仅针对制冷工况的单模型专家PID控制相比,多模型专家PID控制能更有效地提高飞机液冷车温控系统的瞬态响应速度,并改善其稳态精度和抗干扰性,具有良好的应用前景。
Aiming at the problem that the conventional PID control can not meet the requirements of the temperature control system of a nonlinear time-varying liquid-cooled aircraft with inaccurate models and complex working environments, a PID temperature control method for multi-model experts in aircraft liquid-cooling vehicles is proposed. According to the requirement of aircraft security and the working conditions of liquid-cooled vehicles, two kinds of mathematical models are respectively established under refrigeration and heating conditions. The multi-model expert PID temperature control system is designed and simulated by Simulink software. The simulation results show that the multi-model expert PID control can more effectively improve the transient response speed of the liquid-cooled vehicle temperature control system and improve its stability compared with the conventional PID control and the single-model expert PID control only for the cooling conditions State accuracy and anti-interference, has a good prospect.