飞控与探测2023，Vol.6Issue(4)：95-99,5.
石英挠性加速度计阻尼参数闭环检测方法
The Method of Damping Parameters Close-Loop Detection Technology of Quartz Flexible Accelerometers
董鑫宇 1焦舰 1陆伟亮 1曾榕琳 1刘汉辰 1徐立黄 1温姣1
作者信息
- 1. 上海航天控制技术研究所·上海·201109||上海惯性工程技术研究中心·上海·201109
- 折叠
摘要
Abstract
As a high-precision inertial measurement sensor,Quartz flexible accelerometers(QFAs)are widely used in spacecraft attitude control and inertial navigation.In the design process of QFAs,the damping coefficient in in-fluences is an important parameter.Different from other parameters of QFAs,the damping coefficient is related to various factors such as the area of the quartz pendulous reed,the working gap,the atmospheric pressure of the working environment,etc.In order to obtain the damping coefficient under the normal working state of QFAs,a closed-loop measurement method based on the frequency response of the system is studied.The amplitude-frequency characteristic curve of QFAs is obtained by using the horizontal shaking table,and then through the least square method to identify the damping coefficient.Using the identified damping coefficient to simulate and draw the ampli-tude-frequency characteristic curve to compare with the actual sampling output,it verifies that the closed-loop meas-urement method based on the system frequency response is effective and feasible.关键词
石英挠性加速度计/阻尼系数/频率响应/最小二乘法Key words
quartz flexible accelerometers/damping coefficient/frequency response/least square method分类
信息技术与安全科学引用本文复制引用
董鑫宇,焦舰,陆伟亮,曾榕琳,刘汉辰,徐立黄,温姣..石英挠性加速度计阻尼参数闭环检测方法[J].飞控与探测,2023,6(4):95-99,5.
