【作者】 郭紫； 赵伟； 刘建业；

【Author】 GUO Zi;ZHAO Wei;LIU Jian-ye;Navigation Research Center,Nanjing Univ.of Aero.& Astro;

【机构】 南京航空航天大学导航研究中心；

【摘要】 超流体陀螺是一种新型的基于低温物理学的陀螺仪,其有望发展成为下一代超高精度的陀螺仪。量程扩展是超流体陀螺中的一项关键技术,本文提出了一种基于相移锁定法的扩展量程的方案,该方案为解决以往注入热相移存在延时无法实时补偿萨格纳克相移的问题,方案中加入了压力相移来辅助锁定工作点,利用压力相移的实时性来弥补热相移产生的不足,从而扩展量程。该方案可使超流体陀螺的测量量程提高3个数量级,并具有实时性好,精度高等优点,论文通过仿真验证了该方案的可行性和正确性。更多还原

【Abstract】 Superfluid gyroscope is a new kind of gyro based on low temperature physics,it is expected to become the next generation of high-precision gyroscopes.Range extension of superfluid gyroscope technology is very important.An extended range scheme based on phase-shift locking method is present here aimed to solve the delay of the injection of thermal phase shift and the non-real time compensation of Sagnac phase shift,using the pressure phase shift for this problem to auxiliary lock the working point and using the real-time performance of the pressure phase shift to make up for the inadequacy of heat phase shift,so as to extend the range.This scheme can improve the measurement range of superfluid gyroscope for 3 orders of magnitude,with instantaneity and high precision,etc.Based on the simulation,the correctness and feasibility of the scheme can be verified.更多还原