静电悬浮转子微陀螺信号发生电路有源带通滤波器设计  

Design of the Active Band Pass Filter on the Signal Generator of the Electrostatically Suspended Micro Gyroscope

作　　者：邵珰珰[1] 陈文元[1] 肖奇军[1] 崔峰[1] 张卫平[1] 

机构地区：[1]上海交通大学微纳科学技术研究院薄膜与微细技术教育部重点实验室,微米/纳米加工技术国家级重点实验室,上海200240

出　　处：《传感技术学报》2008年第11期1867-1871,共5页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金资助(60402003);国防预研基金资助(9140A09020706JW0314)

摘　　要：信号发生电路是静电悬浮转子微陀螺系统的重要组成部分。介绍了DDS信号发生电路的原理及基本构成和微陀螺信号电容检测的要求、特点以及主要技术指标,并根据具体带宽、中心频率的要求,设计了具有不同参数的有源滤波电路。通过电路模拟仿真实验表明了该电路的可行性之后,在具体实验的操作过程中,成功滤去了DDS信号发生电路所产生的低频直流偏置和高频噪声,从而提高了电路的整体信噪比和控制精度,并为后续静电悬浮转子微陀螺检测控制电路提供了较为理想的信号源。The signal generator is the important part of the electrostatically suspended micro gyroscope system. This article introduces the principle and the structure of the DDS signal generator circuit. According to the request of the detailed band pass and the central frequency, we design the active filter circuit with different parameters. Through the simulation of the circuit, it comes out that the function is realizable. In the actual test, we succeed to filter the direct current and the alternating current which generate from the circuit so that we raise the total Signal-to-Noise and control precision of the circuit and provide a good signal generator for the further circuit.

关 键 词：微陀螺 静电悬浮 直接数字频率合成 有源带通滤波器 

分 类 号：TN713[电子电信—电路与系统] V241.5[航空宇航科学与技术—飞行器设计]