【作者】 李伟；

【导师】 蹇开林；

【作者基本信息】 重庆大学 ， 工程力学， 2010， 硕士

【摘要】 陀螺仪是一种重要的惯性元件,在航天,航海,航空,兵器以及一些民用领域中有着广泛的和重要的应用。半球陀螺的测试原理是基于理想的半球谐振子,理想谐振子的振动具有解析解,可以解释半球陀螺的测试原理。但实际的谐振子总是存在各种缺陷,如质量的不均、阻尼的不均以及阻尼的缓慢变化、激励和信号采集系统缺陷等,导致实际制作完成的半球陀螺总是存在误差。实际半球陀螺出现误差后,需分析产生误差的原因以及如何在后端电路测试系统中进行误差补偿。本文从陀螺基本构造和工作原理入手,着重对其信号检测环节做了分析。简要介绍了半球谐振陀螺(HRG)的闭环检测原理,并用有限元软件ABAQUS对其进行仿真,再建立动力学方程,用均值法求出该方程的理论解,对该原理进行了论证。最后对陀螺由于初始激励引起的测量误差进行分析,从而为实际陀螺系统消除该影响因素提供依据。更多还原

【Abstract】 The gyroscope ,an important inertial component ,is widely applied in navigation, aerospace, aviation, weapons and other civil fields.The test principle of hemisphere gyro is based on the ideal hemisphere harmonic oscillator,of which the vibration can explain it.But actually the harmonic oscillator is always exist various kinds of defects.Such as, the inequality of quality and damping,the slow changing of damping, the defects of incentive and signal acquisition system etc.All of those defects lead to the error of the hemisphere gyros completed.however,when the error appears,it necessary for us to analysis the causes and find a way to have a error compensation in the rear circuit testing system.Beginning from the basic structure and working principle, this article focuses on the analysis of the signal detecting .The closed-loop detecting principle of hemisphere harmonic oscillator (HRG) is introduced and simulated by using finite element software ABAQUS.Then,the dynamic equations are establisheed and the theoretical solution is worked out by using average method to demonstrate the principle.Finally, the measurement error of hemisphere harmonic oscillator (HRG) caused by initial exciting is worked out to provide a basis for actual gyro system to eliminate the influence of this factors.更多还原