發(fā)布時(shí)間：2018-06-19 15:23

  本文選題：定標(biāo)源 + 結(jié)構(gòu)設(shè)計(jì)　； 參考：《吉林大學(xué)》2017年碩士論文

【摘要】：眾所周知,地球的海洋面積約占地表面積的百分之七十一,而陸地的面積僅為海洋面積的五分之二,可以說(shuō)汪洋大海包圍著各個(gè)大陸,分隔著各個(gè)大陸�，F(xiàn)如今,世界交流日益頻繁,大海作為連接著世界各國(guó)文化與經(jīng)濟(jì)的紐帶,就顯得愈發(fā)的重要。也因此,掌握準(zhǔn)確有效的海洋信息一直是各國(guó)學(xué)者爭(zhēng)相研究的熱點(diǎn)問(wèn)題之一。文中涉及的全極化微波輻射計(jì)定標(biāo)源裝置的研制任務(wù),是吉林大學(xué)機(jī)械學(xué)院受中國(guó)科學(xué)院空間科學(xué)與應(yīng)用中心(以下簡(jiǎn)稱空間中心)委托而展開的。其研究目的是為了攻克某新型全極化微波輻射計(jì)的關(guān)鍵技術(shù)。這種新型的全極化微波輻射計(jì)用于海面風(fēng)場(chǎng)的觀測(cè),主要是觀測(cè)海洋風(fēng)速和風(fēng)向。在微波輻射計(jì)開始測(cè)量物體輻射能量之前,需要進(jìn)行定標(biāo),定標(biāo)精度的高低直接決定測(cè)量的精度,因此提高定標(biāo)精度,完善定標(biāo)源裝置結(jié)構(gòu)至關(guān)重要。本文旨在研究全極化微波輻射計(jì)定標(biāo)源裝置及其結(jié)構(gòu),使其滿足某新型全極化微波輻射計(jì)的定標(biāo)精度要求。本論文主要研究?jī)?nèi)容包括:(1)查閱大量國(guó)內(nèi)外相關(guān)技術(shù)文獻(xiàn),了解全極化微波輻射計(jì)及其定標(biāo)技術(shù)的發(fā)展過(guò)程,表明本文研究的目的。(2)研究全極化微波輻射計(jì)的定標(biāo)原理,并根據(jù)空間中心提供的技術(shù)指標(biāo)要求,進(jìn)行定標(biāo)源裝置的結(jié)構(gòu)設(shè)計(jì)。首先進(jìn)行了定標(biāo)源裝置的結(jié)構(gòu)布局設(shè)計(jì),然后對(duì)定標(biāo)源主殼體、相位發(fā)生器、冷熱源、非標(biāo)轉(zhuǎn)盤軸承等主要部件進(jìn)行了詳細(xì)的結(jié)構(gòu)設(shè)計(jì)。(3)定標(biāo)源裝置的有限元分析。應(yīng)用ANSYS Workbench、Hypermesh等有限元軟件,對(duì)整體裝置進(jìn)行了分析,主要包括裝置在受重力狀態(tài)下的靜力分析和模態(tài)分析,裝置在工作狀態(tài)時(shí)的熱影響分析,以及裝置在公路運(yùn)輸環(huán)境下的隨機(jī)振動(dòng)分析。(4)對(duì)定標(biāo)黑體進(jìn)行了設(shè)計(jì)和研制,主要包括黑體涂覆所用新型吸波涂料的研制過(guò)程,包括配制過(guò)程以及性能測(cè)試過(guò)程,以及黑體的涂覆過(guò)程及裝配方法。(5)定標(biāo)源裝置的制造裝配和調(diào)試。對(duì)裝置的裝配工藝過(guò)程進(jìn)行了研究,根據(jù)空間中心所提的技術(shù)指標(biāo)要求,研究了裝置的線柵和轉(zhuǎn)盤軸承的裝調(diào)方法,以滿足定標(biāo)源裝置的功能和性能要求。本文對(duì)全極化微波輻射計(jì)定標(biāo)源裝置進(jìn)行了結(jié)構(gòu)設(shè)計(jì)和研制,主要包括裝置總體的結(jié)構(gòu)設(shè)計(jì),以及主殼體、冷熱源、相位發(fā)生器等部件的設(shè)計(jì),尤其創(chuàng)新設(shè)計(jì)了一套專用于定標(biāo)源裝置的非標(biāo)軸承;并研究了定標(biāo)黑體涂覆所用吸波涂料的配制方法,推進(jìn)吸波涂料的國(guó)產(chǎn)化進(jìn)程;并對(duì)裝置進(jìn)行了制造、裝配和調(diào)試。經(jīng)試驗(yàn)和測(cè)試,結(jié)果表明所研制裝置滿足各項(xiàng)性能指標(biāo)要求,為后續(xù)的全極化微波輻射計(jì)定標(biāo)源裝置的研究提供了一定的理論參考。
[Abstract]:As we all know, the sea area of the earth covers about 71% of the surface area, while the land area is only 2/5 of the ocean area. Nowadays, the communication of the world is becoming more and more frequent, and the sea is becoming more and more important as the link between culture and economy. Therefore, mastering accurate and effective ocean information has always been one of the hot issues that scholars all over the world are scrambling to study. The research and development of the calibration device for the fully polarized microwave radiometer in this paper was commissioned by the Center for Space Science and applications of the Chinese Academy of Sciences (hereinafter referred to as the Space Center) at the College of Mechanics of Jilin University. The purpose of this study is to capture the key technology of a new type of fully polarized microwave radiometer. This new type of fully polarized microwave radiometer is used to observe the wind field of the sea surface, mainly to observe the wind speed and direction of the ocean. Before the microwave radiometer starts to measure the radiation energy of the object, it is necessary to calibrate. The precision of calibration directly determines the precision of measurement, so it is very important to improve the calibration accuracy and perfect the structure of calibration source device. The purpose of this paper is to study the calibration device and its structure of a fully polarized microwave radiometer, so that it can meet the calibration accuracy requirements of a new type of fully polarized microwave radiometer. The main contents of this thesis are as follows: (1) referring to a large number of relevant technical documents at home and abroad to understand the development process of full polarization microwave radiometer and its calibration technology, indicating that the purpose of this paper is to study the calibration principle of full polarization microwave radiometer. According to the technical requirements provided by the space center, the structural design of the calibration source device is carried out. Firstly, the structural layout of the calibration source device is designed, and then the finite element analysis of the calibration source main shell, phase generator, cold and heat source, non-standard turntable bearing and other main components is carried out in detail. By using ANSYS Workbench HyperMesh and other finite element software, the whole device is analyzed, including static analysis and modal analysis under the condition of gravity, thermal impact analysis of the device in the working state. And the random vibration analysis of the device in the environment of highway transportation. (4) the calibration blackbody is designed and developed, which mainly includes the development process of a new type of absorbing coating used in blackbody coating, including the process of preparation and the process of performance testing. And blackbody coating process and assembly method. The assembly process of the device is studied. According to the technical requirements proposed by the space center, the installation and adjustment methods of the line grille and rotary disc bearings of the device are studied to meet the function and performance requirements of the calibration source device. In this paper, the structural design and development of the calibration device for fully polarized microwave radiometer are carried out, including the overall structural design of the device, as well as the design of the main shell, heat and cold source, phase generator and other components. In particular, a set of non-standard bearings specially designed for calibration source equipment is designed, and the preparation method of absorbing coating for calibration blackbody coating is studied to promote the localization process of absorbing coating, and the device is manufactured, assembled and debugged. The experimental results show that the developed device meets the requirements of various performance indexes and provides a theoretical reference for the subsequent research on the calibration device of fully polarized microwave radiometer.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH766

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