DRLG抖动随机响应频域建模与分析  

Modeling and Analysis of the DRLG’s Random Dither Response in Frequency Domain

作　　者：江明明[1] 张岩[1] 潘献飞[1] 范竹荣[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,湖南长沙410073

出　　处：《压电与声光》2010年第5期735-738,共4页Piezoelectrics & Acoustooptics

摘　　要：抖动随机是影响机抖激光陀螺(DRLG)性能的一个重要因素。抖动随机响应特性是分析DRLG抖动控制过程、改进抖动控制方法的重要依据。基于DRLG抖动动力学特性建立抖动随机响应时域模型,进而利用数字滤波器概念将时域模型变换为频域模型。该频域模型可全面直观地描述随机抖动频谱特性,简化抖动随机响应特性分析过程,得到与实测数据相吻合的分析结论。这对提高DRLG抖动控制精度具有重要的理论参考价值。Random dither is very important for the performance of the dither ring laser gyro （DRLG）.The characteristics of dither random response are an important reference for analyzing the DRLG control process and improving the dither control method.The random dither response model in time domain is established based on the DRLG’s dither dynamic characteristics,and the model expression in frequency domain is acquired by using the digital filter concept.The frequency domain model is convenient to describe the frequency characteristic of random dither response,simplify the analysis process and obtain a consistent result to the experiment data,which is of great worth to the improvement of DRLG’s dither control accuracy.

关 键 词：机抖激光陀螺 抖动运动 随机响应 频域分析 

分 类 号：TN24[电子电信—物理电子学] U666.1[交通运输工程—船舶及航道工程]