Design of miniaturized MEMS gyro north finder based on two-phase axial flux PMSM

作者：Xueling Zhao, Chengbin Wang, Jianqiang Chen, Bin Zhou, Rong Zhang · 发表于：2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) · 年份：2022 · DOI：10.1109/i2mtc48687.2022.9806647 · 被引用次数：6 · 研究领域：Inertial Sensor and Navigation、Magnetic Bearings and Levitation Dynamics、Geophysics and Sensor Technology

Gyro north finders have been widely used in weapons aiming, military vehicles, mining, tunneling and other military and commercial applications. In this paper, a MEMS gyro north finder based on rotation modulation technique is proposed. The developed north finder has advantages of small size, light weight, low cost, low power consumption and good accuracy. The two-phase axial flux permanent magnet synchronous motor (PMSM) is applied to drive the rotation of inertial measurement unit (IMU). The motor windings are packaged in printed circuit board (PCB). The system uses the slip-ring to improve power supply reliability. The wireless data transmission and the design of the motor effectively reduce the size and weight of the north finder. A dual-loop proportional-integral (PI) control algorithm is designed for position and current loop. The vector control and space vector pulse width modulation (SVPWM) techniques are adopted to the current loop. The two-phase axial flux PMSM is tested through back electromotive force and control experiments. And the four-position north finding system experiments are carried out. In contrast to other north finders, our work confirms the excellent potential of the developed north finding system. It will be an important reference to industrial applications.