谐振式光纤陀螺全数字闭环方案的算法研究  

Study of Algorithm for All Digital Close-loop Resonator Fiber Optic Gyro

作　　者：沈庆[1] 马慧莲[1] 周柯江[1] 金仲和[1] 

机构地区：[1]浙江大学信息与电子工程学系,杭州310027

出　　处：《仪器仪表学报》2005年第z2期143-146,共4页Chinese Journal of Scientific Instrument

摘　　要：谐振式光纤陀螺是一种基于光纤环形谐振腔Sagnac效应的新型惯性传感仪器。与现有的其他类型陀螺相比,具有很多性能上的优势。在此提出了一种基于DSP技术的全数字闭环方案,并为这种方案建立了数学模型。借助用z变换表示各个环节的离散传递函数,设计并优化了跟踪谐振频率的算法,并将此算法在DSP中实现。Resonator fiber optic gyro (R-FOG) is a new kind of inertial sensor based on Sagnac effect. Compared with other kinds of gyros, R-FOG has many advantages. Close-loop operation with digital signal processor (DSP) is presented. The mathematical model is established too. Using the Z-transform to describe the discrete transfer function for elements in the system, a frequency-tracking algorithm is designed and optimized, which has been realized in DSP.

关 键 词：谐振式光纤陀螺 DSP技术 闭环跟踪算法 

分 类 号：TH7-55[机械工程—仪器科学与技术]