发明授权
- 专利标题: Digitally programmable bandwidth for vibratory rate gyroscope
- 专利标题(中): 用于振动速率陀螺仪的数字可编程带宽
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申请号: US11077040申请日: 2005-03-10
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公开(公告)号: US07464590B1公开(公告)日: 2008-12-16
- 发明人: Steven Porter Hotelling , Brian R. Land , Lex Neal Bayer
- 申请人: Steven Porter Hotelling , Brian R. Land , Lex Neal Bayer
- 申请人地址: FR Boulogne, Billancourt
- 专利权人: Thomson Licensing
- 当前专利权人: Thomson Licensing
- 当前专利权人地址: FR Boulogne, Billancourt
- 代理商 Joseph J. Laks; Vincent E. Duffy
- 主分类号: G01P9/04
- IPC分类号: G01P9/04
摘要:
A signal-processing circuit for a dual-axis vibratory rotation-rate sensor has a digitally programmable bandwidth. An analog-to-digital converter (ADC) converts analog sense signals to digital signals at a high sampling rate. The results of successive ADC conversions are accumulated for a user-programmable number of conversions. By accumulating a number of samples, the sense signals are averaged which improves the signal-to-noise ratio and smoothes the output signal. Alternatively, accumulating a smaller number of samples allows the user to improve the response time of the sensor, allowing the user to set the number of samples that are averaged enables the user to control the effective bandwidth of the sensor. The accumulated conversions are also are scaled by unit-specific calibration factors in order to accommodate for unit to unit variations, so that the rate output will be consistent across a number of sensors.
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