一种新型的硅微陀螺仪驱动幅值检测和控制方案(英文)  

Novel drive-amplitude detection and control scheme of silicon micro-gyroscope

作　　者：王晓雷[1,2] 杨成[1,2] 李宏生[1,2] 

机构地区：[1]东南大学仪器科学与工程学院,南京210096 [2]东南大学微惯性仪表与先进导航技术教育部重点实验室,南京210096

出　　处：《中国惯性技术学报》2013年第5期663-667,共5页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金(60974116)

摘　　要：为了提高硅微陀螺仪性能,分析了驱动和检测模态方程。提出了一种新型的方案,通过傅里叶变换算法计算驱动振荡幅值,通过自动增益控制算法将幅值稳定在设定值。设计了基于FPGA的控制电路,进行了相关实验。结果表明该方法能准确地检测驱动幅值,在温度25℃时的幅值相对误差小于2×10-5,在–40℃到60℃的温度变化过程中幅值相对误差小于3×10-5。因此,提出的方案是可行的和有效的。In order to improve the performance of the silicon micro-gyroscope, the drive and sense equation is analyzed. A novel scheme is proposed, in which the drive vibration amplitude is calculated by the Fourier Transform (FT) algorithm and the amplitude is controlled to stabilize at the set value by the Automatic Gain Control (AGC) method. A control circuit based on Field Programmable Gate Array (FPGA) is designed, and the corresponding experiment is carried out. The results demonstrate that the drive vibration amplitude can be detected accurately by adopting the proposed scheme, and the relative error of the amplitude is less than 2 × 10-5 at 25°C and less than 3 × 10-5 when the temperature changes from -40°C to 60°C. So the proposed scheme is feasible and effective.

关 键 词：硅微陀螺仪 幅值检测 傅里叶变换算法 自动增益控制 

分 类 号：U666.1[交通运输工程—船舶及航道工程]