圆柱壳体振动陀螺谐振子的品质因数研究

Research on Quality Factor of Resonator for Cylinder Shell Vibrating Gyroscope

品质因数是衡量陀螺振动特性的重要指标,它决定了陀螺的检测灵敏度。首先从理论上分析了影响圆柱壳体振动陀螺谐振子品质因数的主要因素。然后针对各种因素进行一系列的实验研究,包括谐振子的材料、形状以及尺寸等因素对于陀螺谐振子品质因数的影响。研究结果表明,谐振子的品质因数在很大程度上决定于谐振子材料、谐振环的形状及外径尺寸。材料的机械品质因数越高,加工而成的谐振子Q值也越高。谐振子的Q值随着谐振环外径和高度的增大而增大,随着谐振环厚度和底部厚度的增大而减小。其中谐振环外径对于谐振子的Q值影响最大。

Quality factor is an important index judging a gyroscope ＇ s dynamics and it is an important parameter contributing to a gyroscope ＇ s sensitivity.The influence factors of quality factor of resonator for cylinder shell vibrating gyroscope are investigated theoretically.And the various experiments on the influence factors are performed.The experimental researches are conducted to study the factors which influence the quality factor of the resonator,including the material,the size and the shape of the resonator.It is shown that the material,the shape and diameter of the resonator are the crucial influence of the quality factor.The Q factor of resonator increases while the diameter and length increases.And while the thickness of the cylinder-wall and bottom decrease,the Q factor of resonator would increases.