發(fā)布時(shí)間：2019-03-09 18:43

【摘要】：航天器飛輪工作時(shí)產(chǎn)生的振動(dòng)是影響有效載荷工作的主要擾動(dòng)源，國(guó)內(nèi)外學(xué)者通過(guò)各種方法對(duì)飛輪的振動(dòng)進(jìn)衰減控制，以減少有效載荷的振動(dòng)響應(yīng)，提高航天器有效載荷的分辨率。 為此，本文以武器裝備預(yù)研重點(diǎn)基金項(xiàng)目[9140A2011QT4801]為依托，建立了基于形狀記憶合金被動(dòng)減振的飛輪控制系統(tǒng)，采用虛擬樣機(jī)仿真與實(shí)驗(yàn)相結(jié)合的方法驗(yàn)證了該系統(tǒng)的有效性，并對(duì)其進(jìn)行了多學(xué)科設(shè)計(jì)優(yōu)化，論文的創(chuàng)新點(diǎn)和主要研究工作如下： （1）從其本構(gòu)模型及性質(zhì)出發(fā)分析了其耗能減振原理，采用模糊層次分法對(duì)當(dāng)前研究應(yīng)用較多的幾種形狀記憶合金材料進(jìn)行定性及定量的對(duì)比，指出TiNi記憶合金在工程應(yīng)用領(lǐng)域的優(yōu)勢(shì)。 （2）采用形狀記憶合金被動(dòng)減振方式構(gòu)建了飛輪控制系統(tǒng)及其動(dòng)力學(xué)模型，飛輪控制系統(tǒng)被動(dòng)減振機(jī)理分析、仿真分析一致表明，基于形狀記憶合金被動(dòng)減振的飛輪控制系統(tǒng)的振幅隨著記憶合金彈簧-阻尼結(jié)構(gòu)阻尼值的增加而明顯減小，在不同頻率下，基于記憶合金彈簧-阻尼結(jié)構(gòu)的被動(dòng)減振飛輪控制系統(tǒng)模型的振動(dòng)幅值要比非減振飛輪控制系統(tǒng)模型振動(dòng)幅值降低明顯，并具有較好振動(dòng)衰減效果。 （3）采用iSIGHT集成ADAMS的方法建立了飛輪減振實(shí)驗(yàn)平臺(tái)的多學(xué)科設(shè)計(jì)優(yōu)化模型，，通過(guò)iSIGHT對(duì)模型進(jìn)行優(yōu)化分析，得出最優(yōu)解。
[Abstract]:The vibration of spacecraft flywheel is the main source of disturbance affecting payload work. Scholars at home and abroad control the vibration of flywheel by various methods in order to reduce the vibration response of payload. Improve the resolution of spacecraft payload. Therefore, a flywheel control system based on the passive vibration reduction of shape memory alloy is established based on the key project [9140A2011QT4801] of weapon equipment pre-research. The effectiveness of the system is verified by the method of virtual prototype simulation and experiment, and the effectiveness of the system is verified by the method of virtual prototype simulation and experiment. The innovation and main research work of this paper are as follows: (1) the principle of energy dissipation is analyzed based on its constitutive model and properties. The advantages of TiNi memory alloy in engineering application are pointed out by the qualitative and quantitative comparison of several kinds of shape memory alloy materials which have been studied and applied in recent years by using fuzzy hierarchy process (FAHP). (2) the flywheel control system and its dynamic model are constructed by using the shape memory alloy passive damping method. The passive damping mechanism of the flywheel control system is analyzed, and the simulation analysis shows that the dynamic model of the flywheel control system is consistent. The amplitude of the flywheel control system based on the passive vibration reduction of shape memory alloy decreases obviously with the increase of damping value of the memory alloy spring-damping structure. The vibration amplitude of passive vibration absorption flywheel control system model based on memory alloy spring-damping structure is obviously lower than that of non-vibration damping flywheel control system, and the vibration attenuation effect is better than that of non-vibration damping flywheel control system model. (3) the multidisciplinary design optimization model of flywheel vibration control experiment platform is established by using iSIGHT integrated ADAMS method. The optimization analysis of the model is carried out by iSIGHT, and the optimal solution is obtained.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TH133.7;TB53

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