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Sensors, Networks, Control Systems and Information Processing




Vol. 20, Special Issue, April 2013, pp.46-52



Implementation of Closed Loop Control System of FOG Based on FPGA


1 Q. D. Sun, 2 Z. H. Zhu and 2 B. P. Larouche

1 School of Electronic and Electrical Engineering, Shanghai Second Polytechnic University,

2360 Jinhai Road, Shanghai, 201209, China

2 Department of Earth and Space Science and Engineering, York University,
4700 Keele Street, Toronto, ON, M3J 1P3, Canada

E-mail: qdsun@sspu.cn, gzhu@yorku.ca, larouche.benoit@gmail.com


Received: 4 February 2012   /Accepted: 17 April 2013   /Published: 30 April 2013

Digital Sensors and Sensor Sysstems


Abstract: The stability, reliability and miniaturization of fiber optic gyro (FOG) are always the research focuses and difficulties. This paper presented a design method for the digital closed loop control system of FOG based on FPGA. The proposed twice closed loop technique improved the zero-bias stability of FOG. The using of FPGA brought the digital signal processing by software, the system reliability and agility enhancement as well as the system miniaturization. We also developed some samples of FOG using this design method. The experiments and tests show that the proposed method is efficient and valuable. The zero-bias stabilities of all samples are less than 0.075 deg/h.


Keywords: Fiber optic gyro, Digital closed loop, Second closed loop, FPGA, Circuit design, Software design


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