半捷联稳定在工程应用中的关键技术  

Key technology of semi-strapdown stabilization in engineering application

作　　者：毛大鹏[1,2] 丁金伟[1] 王国华[1] 孙敬辉[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,中国科学院航空光学成像与测量重点实验室,吉林长春130033 [2]中国科学院研究生院,北京100039

出　　处：《激光与红外》2012年第10期1171-1176,共6页Laser & Infrared

摘　　要：由于半捷联稳定技术在具体工程实施中,受到系统带宽有限、弹体及光机结构刚度不足、存在各种机械/电气干扰等多种因素的影响,难以实现较高的视轴稳定精度,提出了一种半捷联视轴稳定的数学模型,并深入探讨了工程实施中的难点及其克服途径,特别是对α-β滤波器的使用及其延迟补偿进行了分析,仿真结果显示,在加入滤波器和补偿环节后,系统的稳定精度提高了76%左右。最后,在原型样机上进行了实验研究,试验结果表明:在典型弹体扰动条件下,半捷联稳定方式能够有效的隔离载体扰动,达到传统常平架式稳定平台的稳定精度,具有较强的工程实用性。In light axis stabilization of semistrapdown seeker,there are many technical difficulties, including limited system bandwidth, inadequate angular rigidity of carrier and mechanical structure, interference from mechanism or e lectricity and many other factors. In this paper, a mathematical model is derived for LOS stabilization of semistrap down seeker. We analyze the difficulties in the implementation and propose the approaches to overcome them. Alpha beta filter and compensation method are used for phase delay. The simulation results show that the stabilization preci sion of the system is increased by 76% after adding the filter and delay loop. Finally,experimental studies have been conducted in the prototype, and the practical test results indicate that the structure of semistrapdown imaging seekers can effectively isolate the carrier disturbance in typical airborne condition, and the stabilization precision of semi strapdown seeker can match that of the gimbaled seeker. The results of this paper is strongly applicable to practical en gineering.

关 键 词：半捷联导引头 视轴稳定 Α-Β滤波器 稳定精度 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]