Construction And Simulation Of Aero-engine Mechanical Hydraulic Control System Simulation Platform Based On AMESim

The aero-engine control system ensures that the engine operates stably,reliably and efficiently under all flight conditions and operating conditions.Although the control mode of aero-engine has changed from mechanical hydraulic control to digital electronic control,mechanical hydraulic control system has the characteristics of mature technology,high reliability and anti-electronic interference,and it is still used in China’s current engine and some military engines.Therefore research on aero-engine mechanical hydraulic control system still has important significance and engineering value.The purpose of this paper is to build a simulation platform for aero-engine mechanical hydraulic control system on which users can quickly build a specific engine mechanical hydraulic control system and perform simulation analysis and performance optimization of the control system.The construction of the simulation platform needs to solve three problems: the construction of the component library,the creation of the user interface,and the optimization algorithm applicable to the platform.In order to facilitate the use,maintenance and expansion of the component library,a method for building a component library by function classification and a unified component model naming rule are proposed.According to the functional requirements and interface design principles of the simulation platform,the overall architecture of the simulation platform user interface is designed.The main interface is provided with files,principles,modeling,analysis,optimization and help menus.The genetic algorithm does not depend on the model gradient and is simple,versatile and robust.It has outstanding advantages in solving nonlinear,multi-model and multi-objective system optimization problems.Therefore it is very suitable for the optimization design of mechanical hydraulic control system.The platform uses GUIDE,AMESim/Simulink,and MATLAB as tools for user interface development,component library construction,and optimization algorithm writing.It sets up the interface between AMESim and Simulink,and can call the AMESim component model in Simulink.The component library,user interface and optimization algorithm of the simulation platform are integrated into one whole,which solves the problem of communication between the three.The practicability of the simulation platform is verified by the construction,simulation analysis and optimization design of the engine mechanical hydraulic single-axis speed control system.The component library of the simulation platform has a clear hierarchy,reasonable naming,and strong scalability.The user interface is easy to use and beautiful,and has good responsiveness.Genetic algorithm as an optimization algorithm has good applicability on this platform.The constructed simulation platform can serve as a good simulation platform for studying the mechanical hydraulic control system of aero-engines.