Research On Electromechanical Actuator Model Driven Design And Verification

The system engineering design method based on the model is a powerful tool for solving complex system design,which is a leading research direction of complex system design.With the rapid development of high power drive technology and motor technology,the development of full-electric plane is possible.As the key subsystem of the whole electric plane,the electromechanical actuator system is depend on many fields such as mechanical,electronic,control and mechanics,which is a typical multi-field joint design problem.Conventional design method almost focused on a single domain independent design,and lack of top-level design modeling analysis and the ability to design joint modeling and simulation in various fields,not at the design stage of each phase of the design verification.So this topic focuses on the application of digital design and all-electric aircraft requirements,which based on the systems engineering design,using SysML language and Rhapsody software.Starting from the top level requirements analysis,in the framework of system engineering,the function and performance of electromechanical actuator system was established.Through the model deduction and multiple step back,verify the logical relationship and the function of electromechanical actuator system.We have got the electromechanical actuator top model which can meet the requirements of the test prototype.This topic research and put forward the electromechanical actuator top design and development plan,including:(1)determining the top structure model for target products,divided into the top architecture modeling and architecture model validation of two parts.(2)study and discuss the main tasks of the top-level model of electromechanical actuator system;And validate the relevant standards of the architecture model.(3)to determine the software,modeling language and methods used in modeling;Verify the necessary software platform for the implementation.Secondly,based on the design and development plan,the modeling research and practice are carried out from the perspective of demand driving.Includes:(1)functional logic modeling and static structure modeling and dynamic behavior modeling that supports functional logic.(2)in the structural model,a new constraint model with performance parameters is added to describe and realize performance requirements.(3)in the structure model and behavior model,the redundant design description realizes the reliability requirement.Thirdly,the implementation of the model and its architecture are studied and practiced.Including:(1)use the weighting method based on the efficiency curve to determine the final solution.(2)put forward the concept of unitization,and combine the solution to achieve the integration and integration of the system while deepening the granularity of the model,and get the final product of the top-level design.(3)study the delivery of design and development of the final product top-level architecture model.Fourth,verify the top-level architecture model by combining two methods:(1)black box verification and white box verification performed by the model itself;(2)Simulink modeling simulation under the top-level model guidance,and Sysml model The Simulink model code performs the validation jointly.