摘要
从激光陀螺抖动控制的基本原理入手,详细介绍了一种激光陀螺抖动闭环控制的新方法。该方法通过引入全球定位导航系统中信号跟踪解调的思想,使输出的抖动驱动控制信号的频率和相位与激光陀螺抖动反馈信号的频率和相位相等,从而来维持激光陀螺的闭环抖动。该种抖动控制方法既具有模拟正弦驱动信号噪声小、谐波小和能量损失小的优点,同时还具有方波驱动易于数字化实现和方便加入噪声的优点。最后通过仿真分析和试验,验证了提出的闭环抖动控制方法的可行性。
A new method for laser gyro digital closed-loop dither control is described. This method makes the phase and frequency of the dithered driving signal equal to the feedback signal of RLG to maintain the RLG looped dither. This dither control method has the benefit of small noise of analog sine drive signal,small harmonic,and small energy loss,it also can easily realize the square-wave drive in a digital way and add the noise. At last,it shows that the closed-loop dither control method proposed in this paper is entirely feasible and can be used for reference by analyzing the experimental and simulation result.
出处
《导航定位与授时》
2015年第4期72-76,共5页
Navigation Positioning and Timing
关键词
激光陀螺
锁相系统
闭环抖动控制
Ring laser gyro
PLL system
Closed-loop dither control
