本文選題：落震仿真模塊 + 仿真平臺　； 參考：《中國民航大學》2015年碩士論文

【摘要】：磁流變減震器可持續(xù)提供可變阻尼力,結構簡單且穩(wěn)定耐用,是飛機起落架緩沖系統(tǒng)的重要組成部分,在飛機起落架緩沖領域,有著廣闊的應用前景。磁流變減震器在應用于飛機起落架之前,需要經過多項性能試驗和振動試驗,其中包括磁流變起落架落震試驗。落震試驗臺是進行落震試驗的主要試驗裝置。使用落震試驗臺對磁流變起落架進行落震試驗,研究分析磁流變起落架整體及其減震器在著陸撞擊過程中的動力學特性。磁流變減震器性能試驗和振動試驗費用昂貴,若試驗失敗,需要重新設計磁流變減震器并重新進行磁流變減震器性能試驗和振動試驗,增加了設計和制造周期。為了降低試驗費用、縮短設計和制造周期,開發(fā)了磁流變減震器的振動測試仿真平臺,模擬仿真多項性能試驗和振動試驗。振動測試仿真平臺包括減震器性能測試、落震仿真、滑跑振動測試、全機振動測試四個模塊。本文針對振動測試仿真平臺模擬仿真落震試驗的需求,開發(fā)了落震仿真模塊。落震仿真模塊包括ADAMS仿真、Matlab仿真、數(shù)學模型、仿真結果與試驗結果對比四個子模塊。ADAMS仿真子模塊與Matlab仿真子模塊均能模擬仿真磁流變起落架落震過程。ADAMS仿真子模塊采用動力學仿真技術,突出動力學仿真優(yōu)勢。Matlab仿真子模塊突出了Matlab軟件在控制器仿真方面的優(yōu)勢。ADAMS仿真子模塊和Matlab仿真子模塊分別使用在ADAMS軟件中建立的磁流變起落架基礎模型和在Matlab軟件中建立的磁流變起落架基礎模型來模擬仿真磁流變起落架落震過程。磁流變起落架基礎模型使用參數(shù)化建模方法,能夠根據(jù)輸入參數(shù)自動調整和更新模型。落震仿真模塊在數(shù)據(jù)輸入輸出過程中,產生大量數(shù)據(jù),對這些數(shù)據(jù)進行管理涉及到數(shù)據(jù)管理系統(tǒng),磁流變落震仿真模塊選用ACCESS數(shù)據(jù)庫,對數(shù)據(jù)進行存儲、刪除、調取。在落震仿真模塊中,可以進行磁流變起落架落震仿真研究并對仿真結果進行對比分析。通過落震仿真模塊的開發(fā),為振動測試仿真平臺提供了一個可進行磁流變起落架落震仿真和磁流變起落架動力學特性分析的模塊,為設計和制造磁流變減震器提供參考。
[Abstract]:Magnetorheological shock absorber can provide variable damping force, simple structure and stable and durable. It is an important part of aircraft landing gear buffer system, and has a broad application prospect in aircraft landing gear buffer field. Before the application of Mr shock absorber to aircraft landing gear, it is necessary to go through many performance tests and vibration tests, including magnetorheological landing gear landing test. The earthquake drop test rig is the main test device for the falling earthquake test. The dynamic characteristics of the whole magnetorheological landing gear and its shock absorber in the process of landing impact were studied and analyzed by using the seismic drop test rig to test the magnetorheological landing gear. The performance test and vibration test of magnetorheological shock absorber are expensive. If the test fails, it is necessary to redesign the magnetorheological shock absorber and carry out the performance test and vibration test again, thus increasing the design and manufacture period. In order to reduce the test cost and shorten the design and manufacture period, a vibration test simulation platform for Mr shock absorber is developed, which simulates a number of performance tests and vibration tests. The vibration test simulation platform includes four modules: shock absorber performance test, vibration drop simulation, runaway vibration test and whole machine vibration test. In order to meet the demand of vibration test simulation platform, a simulation module is developed in this paper. The simulation module includes ADAMS simulation, Matlab simulation, mathematical model, The simulation results are compared with the experimental results. The four sub-modules, the Adams simulation sub-module and the Matlab simulation sub-module, can all simulate the magnetorheological landing gear landing process. Adams simulation sub-module uses dynamic simulation technology. Highlight the advantage of dynamic Simulation. MATLAB Simulation Submodule highlights the advantages of Matlab software in controller simulation. Adams simulation submodule and Matlab simulation submodule respectively use the MRG basic model established in ADAMS software and the Matlab simulation module. The basic model of magnetorheological landing gear is established in the software to simulate the seismic process of the magnetorheological landing gear. The basic model of Mr landing gear can adjust and update the model automatically according to input parameters by using parameterized modeling method. In the process of data input and output, a lot of data are generated in the simulation module of falling earthquake. The management of these data involves the data management system. The ACCESS database is used in the simulation module of magnetorheological fallout, and the data is stored, deleted and transferred. In the simulation module of falling earthquake, we can do the simulation research of magnetorheological landing gear and compare and analyze the simulation results. Through the development of the vibration simulation module, this paper provides a module for the vibration test simulation platform, which can be used for the simulation of the magnetorheological landing gear and the analysis of the dynamic characteristics of the magnetorheological landing gear, and provides a reference for the design and manufacture of the magnetorheological shock absorber.
【學位授予單位】：中國民航大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：V226

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