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为了消除抖动偏频激光陀螺仪的动态闭锁误差,需要向正弦抖动信号中注入具有平稳性的随机噪声,以使抖动幅度随机变化,从而可以通过时域平均来消除动态闭锁误差.对抖动加噪原理、随机噪声的性质进行了研究,在此基础上用AT89C2051单片机实现了随机噪声的产生与注入,并通过实验验证了所设计的噪声注入系统可以有效地消除动态闭锁.
In order to eliminate the dynamic blocking error of the jitter frequency-shift laser gyroscope, a stable random noise needs to be injected into the sinusoidal jitter signal so as to change the jitter amplitude randomly, so as to eliminate the dynamic blocking error by time-domain averaging. Principle and random noise are studied. Based on this, the generation and injection of random noise are realized by AT89C2051 single-chip microcomputer. The experimental results show that the designed noise injection system can effectively eliminate the dynamic blocking.