CAJ | 학술논문

以共支架、共基准方式安装的三捷联惯组冗余系统为研究对象，通过建立陀螺和加速度计的误差模型，使用蒙特卡洛打靶的方法进行仿真，得到3套陀螺和加速度计量化处理后脉冲输出值；然后，采用数据窗均值法和统计法相结合的方法设计三捷联惯组动态阈值设计；最后，基于该动态阈值，采用门限表决法对注入故障的惯组系统进行故障检测。仿真结果表明，使用该方法设计的阈值能够有效地反映出由载体运动所引起的阈值变化，漏警率和虚警率均小于5％，有较高的工程应用价值。
이공지가、공기준방식안장적삼첩련관조용여계통위연구대상，통과건립타라화가속도계적오차모형，사용몽특잡락타파적방법진행방진，득도3투타라화가속도계양화처리후맥충수출치；연후，채용수거창균치법화통계법상결합적방법설계삼첩련관조동태역치설계；최후，기우해동태역치，채용문한표결법대주입고장적관조계통진행고장검측。방진결과표명，사용해방법설계적역치능구유효지반영출유재체운동소인기적역치변화，루경솔화허경솔균소우5％，유교고적공정응용개치。
The redundant strap-down inertial navigation system with three inertial measurement units was studied. The error model of the gyro and accelerometer was built,and the pulse output of the gyro and accelerometer was obtained by the Monte-Carlo simulation,then the dynamic threshold was designed using the average data window method and statistical method. Finally the fault detection was made based on the dynamic threshold. The results show that the dynamic threshold can reflect the threshold change caused by the movement of the platform;the missing alarm rate and the fail alarm rate are less than 0.05.