半球谐振子固有刚性轴方位角测量方法与仿真研究  

Measurement method and simulation for azimuth angle of normal-mode axis of hemispherical resonator

作　　者：朱蓓蓓 楚建宁 秦琳 王宜新 陈肖 汪学方[2] 许剑锋[2] ZHU Beibei;CHU Jianning;QIN Lin;WANG Yixin;CHEN Xiao;WANG Xuefang;XU Jianfeng(Shanghai Aerospace Control Technology Institute,Shanghai 201109,China;School of Mechanical Science&Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]上海航天控制技术研究所,上海201109 [2]华中科技大学机械科学与工程学院,武汉430074

出　　处：《振动与冲击》2022年第5期166-172,共7页Journal of Vibration and Shock

摘　　要：半球谐振子固有刚性轴方位角测量是谐振子制造及调平等工艺过程的重要基础。首先对半球谐振子固有刚性轴方位角的测定方法进行了理论分析,其次开展了基于位置激励的半球谐振子谐响应仿真研究,模拟了固有刚性轴位置的测定过程,最后通过设计试验,采用非接触式声波激励,激光多普勒测振仪采集唇缘不同位置的振动信号,完成了半球谐振子固有刚性轴方位角的测定。该方法的角度分辨率优于1°,结果表明:其固有频率主轴方位角的辨识误差约为4.4%,具有良好的可行性,该方法装置简单、便于操作,对半球谐振子初期研制过程中固有刚性轴方位角的精确定位具有重要的参考意义。The azimuth measurement of normal-mode axis of a hemispherical resonator is an important basis for manufacturing and tuning process of resonator. Here, firstly, the theoretical analysis for measurement method of normal-mode axis azimuth of a hemispherical resonator was performed. Secondly, the harmonic response simulation of hemispherical resonator based on position excitation was done to simulate the measurement process of normal-mode axis position. Finally, through design tests, non-contact acoustic wave excitation and laser Doppler vibrometer were adopted to collect vibration signals at different positions of lip edge, and finish measuring the azimuth of normal-mode axis of the hemispherical resonator. The results showed that the angular resolution of this method is better than 1°;the identification error of the resonator’s natural frequency principal axis azimuth is about 4.4% to have good feasibility;this method is simple and easy to use, it has important reference significance for precise positioning of normal-mode axis azimuth in initial development process of hemispherical resonator.

关 键 词：半球谐振子 固有刚性轴 谐响应仿真 声激励 

分 类 号：V448[航空宇航科学与技术—飞行器设计] TB12[理学—工程力学]