自标定加速度计组合的设计与实现  

Design and Realization of Self-calibrated Accelerometers Assembled Unit

作　　者：卜继军[1] 叶刚[1] 余鲲[1] 陈朝春[1] 李宝林[1] 帅师师[1] 

机构地区：[1]四川压电与声光技术研究所,重庆400060

出　　处：《压电与声光》2010年第1期23-26,共4页Piezoelectrics & Acoustooptics

基　　金：中国电子科技集团公司创新基金资助项目(JJ0616)

摘　　要：针对捷联惯性导航系统中加速度计组合需要定期标定的问题,提出了一种能在载体上快速进行加速度计自动标定的技术方案,并给出了基本数学模型。该方案利用加速度计一次通电稳定性高于其逐次通电稳定性的特性,提高了加速度计组合的使用精度。研制了一种自标定加速度计组合,样机结合惯性技术与机电控制技术,实现了在外部控制下的自标定和自动锁紧功能。样机测试结果表明该技术方案可明显提高加速度计的模型参数精度;经过进一步工程化研究后,可在高精度惯性导航与制导和其他需要使用高精度加速度计的领域中得到应用和推广。A solution which can rapidly self-calibrate accelerometers in a carrier is brought out aiming at the problem that accelerometer unit of strapped-down inertial navigation system need calibration periodically. The basic mathematic model of self-calibration is presented. With the advantage that the accelerometer＇s bias stability is better than the bias repeatability, the precision of accelerometer units is promoted. A self-calibrated aceelerometer unit is developed. The inertial technology and the electromechanical technology are adopted in the development of the prototype in which self-calibration and self-lock under exterior control are implemented. The measurement result testifies the solution can remarkably promote the practical precision of aecelerometer. With further research, the self-calibrated aceelerometer unit will have a very good prospect in high precision inertial navigation and other appli- cations which need high precision accelerometers.

关 键 词：捷联惯导 加速度计组合 自标定 

分 类 号：V241[航空宇航科学与技术—飞行器设计]