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01244 am a22001573u 4500 |
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269363 |
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|a Dong, Y.
|e author
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|a Kraft, M.
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|a Hedenstierna, N.
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|a Redman-White, W.
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|a Microgyroscope control system using a high-order band-pass continuous-time sigma-delta modulator
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|c 2008-07.
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|z Get fulltext
|u https://eprints.soton.ac.uk/269363/1/S%2526A_Gyro_Yufeng.pdf
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|a The paper presents a novel 6th order continuous-time, force-feedback band-pass sigma-delta modulator control system for the detection mode of micromachined vibratory gyroscopes. Compared with the architecture using a low-pass sigma-delta modulator, this band-pass solution uses a much lower sampling frequency for the sigma-delta modulator and thus reduces the requirement for frequency response of the detection interface and control electronics. In this work, the sigma-delta modulator operates at only four times of mechanical resonant frequency, which allowed its implementation in a continuous-time circuit using discrete electronic components on a PCB; this has the advantage of simple prototyping and can improve the signal anti-aliasing characteristics.
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|a Article
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