Research On The Design Of The Scanning Mirror System Of The Aerial Camera

Aerial reconnaissance camera is the important information source in wartime. Intelligence with broad-face and large-depth will be gotten by strabismus aerial camera in little time. It is significant that the manufacture of strabismus real time aerial camera could strengthen our national defense. Image quality is important performance index about aerial camera. There are many reasons that influence on image quality, including self-hardware of camera, aeroplane and environment etc. Thereinto, image movement that comes into being by aeroplane movement is important cause to influence on image quality. Image movement that is brought by aeroplane movement (including the forward movement, pitching and yawing movement) will be eliminated, and then image quality of camera will be improved after the research.The scanning mirror system is execution component to compensates error Brought by image movement. It is main component of aerial camera. It analyses the causes to bright image movement, studies principle to compensate image movement, conforms project to compensate image movement, and designs framework to compensate image movement in the article; to analyze and design configuration of the scanning mirror, to select matters of mirror and its support structures on the principle of consistent line expansion coefficient; to ascertain type of moment electromotor by most rotating angle speed and most rotating moment which are required by loads in the period to take pictures, as well as by figuration size of electromotor; to design retarder according as the electromotor parameters; to design and optimize lightweighted mirror shapes, because the mirror is key part; to design flexure support structure, to analyze static and dynamic characteristics of the support structure by name of Patran program for validating design rationality; to study function of the scanning mirror electric control system ; to test precision of the system, the resultsindicate the rationality of design of the scanning mirror system.