Design of PCI express real-time measurement and control platforms for MEMS gyroscopes

ZHOU Bin; QIU Zhichang

doi:10.16511/j.cnki.qhdxxb.2017.21.036

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Journal of Tsinghua University(Science and Technology) ›› 2017, Vol. 57 ›› Issue (12) : 1310-1316. DOI: 10.16511/j.cnki.qhdxxb.2017.21.036

PRECISION INSTRUMENTS AND MECHANOLOGY

Design of PCI express real-time measurement and control platforms for MEMS gyroscopes

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Abstract

APCI Express (PCIe) real-time measurement and control platform was developed for micro electro mechanical system(MEMS) gyroscopes. The PCIe, the field programmable gate array (FPGA) driver and the delay link were optimized and accelerated to give closed-loop control of the gyro for both the driving frequency and the driving amplitude. Consequently, the linear vibration gyroscope operates at the resonant frequency and the amplitude is stable. The real-time performance and stability of the measurement and control system are analyzed. The FPGA hardware was optimized for the PCIe bus transmission. The single readout time was reduced to 1.8 μs by accelerating the bus transmission control and the PCIe IP core interface control. The driver was streamlined to reduce the data transmission delay between the kernel layer and the user layer. Efficient data transmission timing control stabilized the data transmission. The gyroscope operating frequency was then stable at 100 kHz.

Key words

micro electro mechanical system (MEMS) gyroscope / PCI express / field programmable gate array (FPGA) / real-time

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ZHOU Bin, QIU Zhichang. Design of PCI express real-time measurement and control platforms for MEMS gyroscopes[J]. Journal of Tsinghua University(Science and Technology). 2017, 57(12): 1310-1316 https://doi.org/10.16511/j.cnki.qhdxxb.2017.21.036

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