Modeling and simulation of aircraft fuel system under the framework of electromechanical integrated management
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摘要: 机电综合管理框架下,设计了基于Simulink的某型飞机燃油系统仿真平台,阐述了平台各系统的工作原理和实现方式,实现了飞机燃油系统的压力加油、发动机供油、交叉供油等功能,利用热时间常数计算法对飞机不同飞行阶段的燃油温度进行了模拟,采用建模方法对燃油泵的电气故障特性进行了分析.仿真结果表明:该燃油系统仿真平台有效地实现了实际燃油系统的所有功能特性,为飞机燃油系统机电综合管理的实施和优化提供了有利支撑,同时为飞机燃油系统的故障诊断与容错设计提供了仿真实验平台.Abstract: A fuel system simulation platform for a certain aircraft was built by Simulink under the framework of electromechanical integrated management. The principle and realization of each subsystem of simulation platform were expounded. This platform has achieved the basic functions of fuel system including pressure fuelling, engines oil supply and cross oil supply. The fuel oil temperature of different flight stages was simulated by adopting the thermal time constant calculation method. Electrical fault characteristics of the oil pump were simulated and analyzed by modeling method. Test results show that fuel system simulation platform can effectively achieve the actual fuel system features and provide favorable support for optimization of aircraft fuel system in the electromechanical integrated management and for the designs of fault diagnosis and fault tolerance as well.
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