| 微机械振动陀螺仪闭环驱动电路分析与设计 |
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| 引用本文： | 许宜申,王寿荣,盛平,吉训生.微机械振动陀螺仪闭环驱动电路分析与设计[J].测控技术,2006,25(10):68-70. |
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| 作者姓名： | 许宜申 王寿荣 盛平 吉训生 |
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| 作者单位： | 东南大学,仪器科学与工程系,江苏,南京,210096 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 为了提高微机械振动陀螺仪输出信号的灵敏度,通常要求驱动信号频率与陀螺仪驱动模态的谐振频率相匹配,且驱动信号幅值稳定.驱动电压信号要满足这些要求,必须采用闭环驱动方式.完整地推导了闭环驱动电路的内在机理,探讨了自激振荡与锁相环两种实现方式,并给出了具体的电路原理框图.
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| 关 键 词： | 微机械振动陀螺仪 闭环驱动 自激振荡 锁相环 |
| 文章编号： | 1000-8829（2006）10-0068-03 |
| 收稿时间： | 2005-11-24 |
| 修稿时间： | 2005年11月24 |
Analysis and Design on the Closed-Loop Driving Circuit of Micromachined Vibratory Gyroscope |
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| XU Yi-shen,WANG Shou-rong,SHENG Ping,JI Xun-sheng.Analysis and Design on the Closed-Loop Driving Circuit of Micromachined Vibratory Gyroscope[J].Measurement & Control Technology,2006,25(10):68-70. |
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| Authors: | XU Yi-shen WANG Shou-rong SHENG Ping JI Xun-sheng |
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| Abstract: | In order to improve the output signal's sensitivity of micromachined vibratory gyroscope,the frequency of the driving voltage is required to be equal to the resonant one of the gyroscope's driving mode.Furthermore,the amplitude of the driving voltage must maintain steady.Only closed-loop driving circuit could meet these requirements.The mechanism of the closed-loop driving circuit is deduced mathematically.Two implementation methods of closed-loop driving circuit,including self-drive-oscillation and PLL,are discussed and the material circuit schemes are demonstrated. |
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| Keywords: | micromachined vibratory gyroscope closed-loop driving self-drive-oscillation phase-locked loop |
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