摘要
针对当前双弱连接超流体陀螺方案中存在的变输入角速度信息的提取和系统量程小的问题,提出了相应的角速度信息提取方法和有效扩大量程的方案(幅值锁定技术)。在积分处将采样时间间隔内的角速度值做恒值处理,角速度信息从薄膜位移振动信息中提取;幅值锁定法是将流量幅值持续锁定在某点,实时计算反馈相位。对两个解决方案进行了深入的仿真与分析,并对系统的误差进行了修正和补偿。结果表明,两个解决方案都是切实可行的。
In this paper, a method to extract the information of corresponding angular velocity and an effective scheme to expand the measurement range （amplitude-locking technology） are proposed, according to the problems of the extraction of variable input angular velocity information and the insufficient range existing in the development of the superfluid gyroscope based on AC Josephson Effect. The information extraction method is based on regarding the angular velocity as a constant in sampling time intervals, and then the angular velocity information can be extracted from the thin-film displacement vibration amplitude. The key point of amplitude-locking method is to make the amplitude continuously-locked at a certain point to calculate the feedback phase in real time. The errors in the system are corrected and compensated. The results of the simulation and analysis show that the two solutions are all feasible.
出处
《现代电子技术》
2012年第2期94-99,共6页
Modern Electronics Technique
基金
国家自然科学基金资助项目(61074162)
国家教育部博士点基金资助项目(200802870011)
关键词
超流体陀螺
双弱连接
信息提取
量程扩展
幅值锁定法
superfluid gyroscope
double weak-link
information extraction
range expansion
amplitude-locking
