随机振动引起的超流体陀螺噪声特性  

Characteristic of superfluid gyroscope noise due to random vibration

作　　者：郑睿[1,2] 赵伟[1] 刘建业[1] 聂威[1] 程庆[1] 

机构地区：[1]南京航空航天大学导航研究中心,南京210016 [2]安徽工业大学电气与信息工程学院,马鞍山243032

出　　处：《中国惯性技术学报》2013年第6期797-802,共6页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金(61074162);安徽工业大学青年教师科研基金(QZ201315)

摘　　要：新型超流体陀螺的输出易受随机振动影响,为此须研究随机振动引起的噪声特性以提高其测量精度。根据超流体陀螺的工作原理,分析了由随机振动引起的噪声来源为两部分:旋转角振动和线振动。在建立了该噪声数学模型的基础上,利用通用的参数对该噪声特性进行了仿真与分析。结果表明,随着角速度的增大,该噪声逐渐增大;在角速度变化量的范围内,该噪声呈现先减小,再增大的变化规律;在约瑟夫森频率的范围内,该噪声总体上呈现增大的趋势,而在局部上出现了尖峰值,当约瑟夫森频率的范围在使该噪声出现尖峰值的频率附近时,该噪声严重影响超流体陀螺的测量精度。To increase the measurement accuracy of gyroscope, this paper studied the characteristic of the noises caused by random vibration. Firstly, according to the work principle of the gyroscope, the rotational angular vibration and linear vibration were analyzed which are the noise sources of the gyroscope. Moreover, the mathematic model of the noise was studied. Then, based on the model, the noise characteristic was simulated by utilizing common parameters. The results show that:with the increasing of angular velocity, the noise increases gradually;in the range of changing value of angular velocity, the noise decreases firstly and then increases;in the range of Josephson frequency, the noises show increasing trend as a whole, but they have local peak values, so when Josephson frequency is set near the value that cause the noise to attain its peak value, the detecting accuracy of superfluid gyroscope is seriously affected by the noise.

关 键 词：超流体 干涉式陀螺 物质波 随机振动 噪声 

分 类 号：U666.1[交通运输工程—船舶及航道工程]