【摘要】：固面折疊展開式太陽能聚束器是一類新型的空間能源技術(shù),具有形面精度高、剛度高的特點(diǎn)�？臻g熱推進(jìn)是近年來出現(xiàn)的新型航天器推進(jìn)技術(shù),該項(xiàng)技術(shù)通過聚集太陽直射輻照能,產(chǎn)生高密度的輻射能,將輻射能轉(zhuǎn)化為推進(jìn)力,主要應(yīng)用于空間太陽能熱推進(jìn)、飛行器空間調(diào)姿等領(lǐng)域。另外,固面折疊展開式太陽能聚束器的折展原理可以用于研制固面折展天線,在星球資源探測(cè)、氣象預(yù)警和軍事通信等多個(gè)領(lǐng)域,具有很重要的應(yīng)用價(jià)值。首先,本文對(duì)固面折展式太陽能聚束器進(jìn)行了構(gòu)型設(shè)計(jì),即提出了基本可展模塊Twin-Bennett機(jī)構(gòu)的幾何約束條件,并推導(dǎo)出了Twin-Bennett機(jī)構(gòu)的運(yùn)動(dòng)環(huán)路方程,證明了該機(jī)構(gòu)的單自由度,并對(duì)多單元裝配進(jìn)行研究,不僅證明了裝配的單自由度,而且完成了聚束器的構(gòu)型設(shè)計(jì)和機(jī)構(gòu)運(yùn)動(dòng)簡圖,還從數(shù)值解和仿真兩個(gè)角度對(duì)裝配后的機(jī)構(gòu)進(jìn)行了運(yùn)動(dòng)學(xué)特性分析。然后,完成了固面折展式太陽能聚束器的參數(shù)設(shè)計(jì),即基于收攏性能初步確定了曲面切割方案,采用了三段式的方案對(duì)其修改,提出了一種基于盤面運(yùn)動(dòng)軌跡分析盤面干涉的方法,最終確定盤面邊線的方程。另外,本文還對(duì)聚束器進(jìn)行了詳細(xì)的結(jié)構(gòu)設(shè)計(jì),包括鉸鏈、傳動(dòng)機(jī)構(gòu)、機(jī)架等部分的結(jié)構(gòu)設(shè)計(jì)。對(duì)于傳動(dòng)機(jī)構(gòu)和聚束器盤面形成的組合機(jī)構(gòu),在勻速電機(jī)約束下,進(jìn)行了運(yùn)動(dòng)學(xué)分析,分步求解得到了盤面的運(yùn)動(dòng)過程中的參數(shù)。最后,完成了無電機(jī)限速時(shí)聚束器一個(gè)單元的動(dòng)力學(xué)分析,完成了動(dòng)力學(xué)建模和動(dòng)力學(xué)方程的推導(dǎo)。同時(shí),完成了聚束器的樣機(jī)研制,給出了各部分組件的裝配順序,得到了聚束器的收攏狀態(tài)下的裝配體;完成了展開功能試驗(yàn)和型面精度測(cè)量試驗(yàn),驗(yàn)證了聚束器的折展原理與結(jié)構(gòu)設(shè)計(jì)的正確性,測(cè)量展開精度誤差,其盤面周向型面精度為0.1mm~0.2mm,徑向型面精度誤差在5%以內(nèi)。
[Abstract]:Solid-plane folded and expanded solar buncher is a new type of space energy technology with high shape accuracy and high stiffness. Space thermal propulsion is a new spacecraft propulsion technology in recent years. This technology generates high density radiation energy by concentrating direct solar radiation energy, and converts radiation energy into propulsion force, which is mainly used in space solar thermal propulsion. Aircraft space attitude adjustment and other fields. In addition, the folding principle of the fixed-plane folded and expanded solar buncher can be used to develop the fixed-plane folded antenna, which has important application value in many fields, such as the exploration of planet resources, meteorological early warning and military communication. First of all, the configuration design of the solid plane folded solar buncher is presented, that is, the geometric constraint condition of the basic developable module Twin-Bennett mechanism is proposed, and the motion loop equation of the Twin-Bennett mechanism is derived, and the single degree of freedom of the mechanism is proved. The research on multi-element assembly not only proves the single degree of freedom of assembly, but also completes the configuration design and kinematic diagram of the buncher, and analyzes the kinematics characteristics of the assembled mechanism from the point of view of numerical solution and simulation. Then, the parameter design of the solid-plane folding solar buncher is completed, that is, the surface cutting scheme is preliminarily determined based on the closure performance, and the three-segment scheme is adopted to modify it. In this paper, a method of analyzing the interference of disk surface based on the track of disk surface motion is proposed, and the equation of the edge line of disc surface is determined. In addition, the structure of the buncher is designed in detail, including hinge, transmission mechanism, frame and so on. The kinematics analysis of the combined mechanism formed by the drive mechanism and the buncher disk surface is carried out under the constraint of the uniform speed motor, and the parameters in the motion process of the disk surface are obtained step by step. Finally, the dynamics analysis of a single unit of the buncher without the speed limit of the motor is completed, and the dynamic modeling and the derivation of the dynamic equation are completed. At the same time, the prototype of the buncher is developed, the assembly sequence of each component is given, the assembly of the buncher is obtained, and the expansion function test and the precision measurement test of the shape surface are completed. The principle of beam buncher and the correctness of structural design are verified. The precision error of measurement and expansion is 0.1 mm / 0.2 mm for circumferential surface and 5% for radial shape plane.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：V439.6

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本文編號(hào)：2168777