| 硅微陀螺仪驱动信号提取端口噪声分析 |
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| 引用本文： | 杨波.硅微陀螺仪驱动信号提取端口噪声分析[J].传感技术学报,2009,22(9). |
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| 作者姓名： | 杨波 |
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| 作者单位： | 1. 东南大学仪器科学与工程学院,南京,210096
2. 南京北方信息产业集团有限公司,南京,211153 |
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| 基金项目： | 教育部博士点新教师基金资助，船舶工业国防预研基金资助，总装备部"十一五"预研项目资助 |
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| 摘 要： | 建立了硅微陀螺仪驱动模态的接口模型,设计了驱动速度信号敏感接口电路,分析表明合理的参数选择基本消除了接口模型中寄生电阻电容导致信号衰减.建立了接口电路的噪声模型,推导了各噪声源导致输出噪声电压公式.仿真和试验表明,由运算放大器的噪声电压和噪声电流,及上置直流偏置电阻R1所产生的噪声功率较大.因此,减小前置运算放大器的输入噪声电压、噪声电流以及寄生电容CPP或者增大直流偏置电阻R1可以有效抑制上述噪声的影响.
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| 关 键 词： | 硅微陀螺仪 接口模型 寄生电容 噪声分析 |
The Noise Analyse of Drive Signal Sense Interface of Silicon Micromachined Gyroscope |
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| YANG Bo,WANG Shourong,Fu Wenshu.The Noise Analyse of Drive Signal Sense Interface of Silicon Micromachined Gyroscope[J].Journal of Transduction Technology,2009,22(9). |
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| Authors: | YANG Bo WANG Shourong Fu Wenshu |
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| Affiliation: | YANG Bo1,WANG Shourong1,Fu Wenshu21.School of Instrument Science , Engineering,Southeast University,Nanjing 210096,China,2.Nanjing North Information Industrialization Group Corporation,Nanjing 211153 |
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| Abstract: | The interface model of drive-mode of Silicon Micromachined Gyroscope(SMG) was established and the interface circuitry for sensing the drive velocity signal was designed.The analytic results indicated that the reasonable parameter of the interface circuitry can remove most impacts of these parasitic capacitances and reduce attenuation of the signal.The noise model of the interface circuitry was established.The outputs of noise voltage which was caused by noise sources were deduced.The simulation and experime... |
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| Keywords: | Silicon Micromachined Gyroscope(SMG) interface model parasitic capacitance noise analyse |
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