Patent ID: 9612116
Date: 2017-04-04
CPC Classifications: G01C

Claim:
1. A gyroscope comprising: a rotary core having an annular shape and configured in such a way that magnetic bodies and nonmagnetic bodies are alternately arranged; a tube casing forming an internal space therein and receiving the rotary core in the internal space; a plurality of coils wound around an outer circumferential surface of the tube casing and disposed at positions spaced apart from each other at regular intervals; a power supply supplying current to the coils; and a controller controlling the power supply, wherein the internal space of the tube casing is a vacuum, wherein the coils surround the rotary core while being spaced apart from the rotary core so that the rotary core passes through the coils while rotating, wherein the tube casing is surface-treated so that a friction factor of a surface of the internal space of the tube casing is reduced, wherein the number of coils is the same as the number of magnetic bodies of the rotary core, and wherein the number of coils is the same as the number of the nonmagnetic bodies of the rotary core.