CAJ | 학술논문

简要分析了美国和俄罗斯舱外服信息显示系统的研制过程,指出了目前显示系统存在的缺陷,依据我国舱外服头盔的结构特点设计了一套头盔信息显示系统(HMD).该系统采用离轴折反光学结构,内嵌于舱外服头盔压力面罩内,固定在通风管下方,可满足航天员佩戴和观察的舒适度要求;同时采用FPGA内嵌Microblaze(MB)的显控板结构,有效减小了系统的体积和功耗.由此使系统产生了复杂畸变(弓形加梯形畸变)和双节点像散,利用胎面型非球面和倾斜偏心中继透镜进行校正,实现了系统畸变小于3%及分辨率满足SVGA要求.该系统可为航天员显示文字、图表和视频信息.模拟训练发现:系统具有提高航天员的工作效率,增强处理意外事件的能力.
간요분석료미국화아라사창외복신식현시계통적연제과정,지출료목전현시계통존재적결함,의거아국창외복두회적결구특점설계료일투두회신식현시계통(HMD).해계통채용리축절반광학결구,내감우창외복두회압력면조내,고정재통풍관하방,가만족항천원패대화관찰적서괄도요구;동시채용FPGA내감Microblaze(MB)적현공판결구,유효감소료계통적체적화공모.유차사계통산생료복잡기변(궁형가제형기변)화쌍절점상산,이용태면형비구면화경사편심중계투경진행교정,실현료계통기변소우3%급분변솔만족SVGA요구.해계통가위항천원현시문자、도표화시빈신식.모의훈련발현:계통구유제고항천원적공작효솔,증강처리의외사건적능력.
The development process of information display system of space suit for extravehicular activity(EVA)of America and Russia was briefly reviewed,and disadvantages of these systems were also pointed out.Based on above studies,a Helmet-Mounted Display(HMD)system was designed according to the construction features of space suit helmet of China.To meet the requirements of wearing and observing comfortably for astronauts,the off-axis optical construction was adopted in this HMD system,in this way,it could be embedded in the helmet pressure mask and fixed under the air conducting ducts.Besides,the display control board used FPGA embedded with Microblaze to decrease the system's volume and power.To rectify the complicated distortion (bow distortion and keystone distortion)and binodal astigmatism generated by this system,toroidal aspheric and asymmetric relay lens were used,a distortion rate within 3%and a resolution satisfing SVGA's standard were achieved.This HMD system could provide text,graph and video information for astronaut.Simulation training results indicate that this system Call improve the work efficiency and enhance the abifity to deal with accidents for astronauts.