518 Micro Gyroscopic Sensor using Active Magnetic Bearing : 1st Report: Principle of Detecting Angular Velocity and Basic Experiments

Abstract

The paper proposes to apply Active Magnetic Bearing (AMB) for developing compact, multi-axis, high-accuracy and low-cost gyroscopic sensors. In the proposed sensor, angular velocity and in addition acceleration are measured based on the control signal for maintaining the relative position of the shaft to the stator in the AMB. It works as two-axis gyroscopic sensor and in addition three-axis servo-type accelerator so that the cost performance of the proposed sensor is expected to be high enough. In order to investigate its feasibility, several basic studies are carried out with a conventional-size AMB.