| 摘要 |
PURPOSE:To obtain a vibration gyro simple in structure which is small in size and inexpensive and has a superior SN ratio by providing a detecting means which projects in a Z-axis direction at the base part of a driving vibrator consisting of two arm members and a base part. CONSTITUTION:The driving vibrator 7 consists of the arm members 4 and 5 and base part 6. The detecting means 21 is provided projecting downward from the base part 6 of the driving vibrator 7 and a base 9 is fixed to the lower end part of the detecting means 21 which detects torsional moment Mt is constituted by polarizing a piezoelectric material 1 of, for example, a rectangular hexahedron shape in a Z-axis direction and positioning both electrodes 19 and 20 on surfaces crossing a W direction at right angles while they are displaced toward one of surfaces u1 and u2 crossing a U direction at right angles, e.g. the surface u1. The detecting means 21 detects electric displacement Du in an area surrounded with the electrodes 19 and 20 corresponding to the operation of torsional moment Mt. |
