【作者】 冯艳利； 吕航伟； 陈琳； 孟冰；

【Author】 FENG Yanli LU Hangwei CHEN Lin MENG Bing Flight Automatic Control Research Institute,Xi’an 710065,China

【机构】 飞行自动控制研究所；

【摘要】 全光纤开环光纤陀螺普遍采用的模拟信号处理方案在很大程度上影响陀螺的精度及输出带宽,同时,模拟输出接口,陀螺固有的比例因子非线性等因素制约了其应用范围的拓展,为使全光纤开环光纤陀螺满足更广泛地应用需求,研究了一种独特的数字信号处理电路及算法,进行信号的实时跟踪、压电陶瓷相位调制驱动、调制工作点的控制,最终实现Sagnac相差解调,线性化陀螺输出,减小了解调误差,提高了陀螺精度,拓宽了陀螺带宽,提升了开环光纤陀螺性能。更多还原

【Abstract】 For all fiber open-loop gyro, the analog signal processing is used in general. As a consequence, it has effect on accuracy and bandwidth of the gyro. The other hand, the gyro shows the scale factor nonlinearity and the anolog interface ,All these put the gyro at disadvantages in its application. In response to this problem, a unique algorithm based on digital signal processing was studied and the hardware was design. Based on this way, the signal was tracked accurately, PZT was drove and amplitude was modulated. Operating point of gyro was stabilized. What ’s more, Sagnac phase was detected.The results show that scale factor is linearization, the accuracy is better and the bandwidth is enlarged. The performance of gyro is improved.更多还原