| 摘要 |
PURPOSE:To obtain an accurate and reliable measurement result by implanting three coils and a probe in a common magnetic material substrate with high magnetic permeability and bringing the probe into contact even when the surface of a magnetic structure body to be measured is curved. CONSTITUTION:Cores 2a, 2b, and 2c of 'Permalloy(R)', etc., wound with coils 3a, 3b, and 3c are arranged on the common core base 1 made of, for example, 'Permalloy(R)' at respective vertexes of a rectangular equilateral triangle whose two isosceles sides cross each other at the position of the core 2b. Then, the cores 2a, 2b, and 2c are arranged at measurement positions in contact with a shaft 6 which is applied with torque as shown by 7a and 7b, and then the three cores 2a, 2b, and 2c contact the measurement object surface of the shaft 6 having a cylindrical surface completely. Consequently, a stable and reliable measured value which has less variation is obtained. |
