METHOD AND DEVICE FOR MEASURING ANGLE BETWEEN BIDIRECTIONAL H COILS

• Main Authors: JOMON YOSHITO, MIZUE HIROSHI, YOSHITAKE MASUMI, ISHIKAWA TAKEHISA, KUTSUKAKE AKIFUMI
• Format: Patent
• Language: English; Japanese
• Published: 22.08.2016
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To accurately measure an angle formed by measuring shafts of two H coils of a magnetic sensor having the bidirectional H coils.SOLUTION: A magnetic sensor 4 is installed in a rotatable manner inside a solenoid coil 5; two parallel non-magnetic and non-conductive rods 7, 8 are inserted from the outside of the solenoid coil 5 so as to move forward and backward with rotation of the magnetic sensor 4; respective H coils 2, 3 are rotated; and for the respective H coils 2, 3, an angle at which induced voltage due to the solenoid coil 5 becomes maximum is acquired from displacement difference between the two rods 7, 8. Consequently, the angle of the magnetic sensor 4 formed by the measuring shafts of the two H coils 2, 3 can be measured.SELECTED DRAWING: Figure 1 【課題】２方向のＨコイルを有する磁気センサの２つのＨコイルの計測軸が成す角度を精度良く計測すること。【解決手段】本発明では、ソレノイドコイル（５）の内部に磁気センサ（４）を回転可能に載置するとともに、ソレノイドコイル（５）の外部から２本の平行な非磁性・非導電性のロッド（７，８）を磁気センサ（４）の回転に伴って進退可能に挿通し、各Ｈコイル（２，３）を回転させて各Ｈコイル（２，３）についてソレノイドコイル（５）による誘起電圧が最大となる角度を２本のロッド（７，８）の変位差から求めることによって、磁気センサ（４）の２つのＨコイル（２，３）の計測軸が成す角度を計測することにした。【選択図】図１