X-8 Aircraft Engine Fuel Control System Modeling And Simulation Research

Modeling and simulation is an important approach to analyse and to improve the performance of the mechanical-hydraulic oil system of aero-engine. It has an advantage of promoting the designing and maintaining level besides its key role in time-saving, source-saving through the course of the product's designing and manufacturing.As a sub-subject of APTD, this paper focuses on building up a method of modeling and simulation for the mechanical-hydraulic oil system of aero-engine basing on a new platform AMESim which is a series of software majoring in modeling and simulation for the mechanical-hydraulic system. Then the rotate speed controller of the X-8 aero-enging oil system is studied using the above method. Firstly, some key components of the system which play great role in permormace are noted after analysis of the principium;secondly, the components are classified as mechincal components and hydraulic components according to their different structure and performing principle;thirdly, the models of the chosen key components within the system are made from different modeling sources of AMESim;then performance of some key components is studied. The platform based on AMESim has an advantage of making the modeling process much simpler, identifying the parameters much clearer, and so on. Meanwhile, its ability to solve "soft parameters" is also ascendant and make the study much more valuable.It can be concluded that: the modeling method which makes classification of the components in the system based on the theory chart, and then builds up models of different components depending on their individual characteristics can easily build up precise models, the simulation results are content. This method will be modified through the study in the future gradually so as to make the usage of AMESim in the study of aero-engine common and efficient.