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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Cheng Yang Hongsheng Li |
| Copyright Year | 2014 |
| Description | Author affiliation: Sch. of Instrum. Sci. & Eng., Southeast Univ., Nanjing, China (Cheng Yang; Hongsheng Li) |
| Abstract | In order to further improve the performance of MEMS gyroscope, a novel demodulation algorithm all-phase Fast Fourier Transform (apFFT) based on FPGA is proposed to the digital control system, in which the drive detection signal and sensitive axis signal are demodulated respectively. Combining with automatic gain control (AGC) and phase-locked loop (PLL), the closed-loop drive control and high precision demodulated output of MEMS gyroscope have been implemented. A printed circuit board based on FPGA is manufactured and the corresponding experiment is carried out. The experimental results indicate that the digital control system with the apFFT demodulation algorithm of MEMS gyroscope achieves good performance. The amplitude variance of drive detection signal at room temperature is less than 2ppm. The relative error of phase difference between drive signal and drive detection signal is 33ppm. The bias stability of tested MEMS gyroscope is 2.62deg/h with the scale factor being 7.95mV/deg/s. The tested gyroscope with all-phase FFT demodulation algorithm has a better ARW performance of $0.16deg/h/Hz^{1/2}$ than that using multiplication demodulation algorithm with ARW performance of $1.04deg/h/Hz^{1/2}.$ The Experiment verifies that the proposed apFFT demodulation algorithm is feasible and effective. |
| Starting Page | 940 |
| Ending Page | 945 |
| File Size | 320000 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781479938407 |
| DOI | 10.1109/SMC.2014.6974033 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-10-05 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Gyroscopes Micromechanical devices Demodulation Field programmable gate arrays Algorithm design and analysis Digital control Discrete Fourier transforms FPGA MEMS gyroscope all-phase FFT demodulation algorithm digital control system |
| Content Type | Text |
| Resource Type | Article |
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