| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure the characteristic of an acceleration sensor by eliminating noise in a signal from the acceleration sensor placed on a small rotation body, by a noise eliminating means. SOLUTION: An acceleration sensor 20 is fixed to a small diameter turntable 9 on a large diameter turntable 1, and the large diameter turntable 1 is rotated by a servo motor 6 to impart centrifugal force. At the same time, the small diameter turntable 9 is rotated by a servo motor 11 to generate acceleration of specified direction and specified pressure to the acceleration sensor 20, thus measuring the characteristic of the acceleration sensor 20. A control equipment supplies power to the servo motor 6 through a power feeder line 21 and a control signal line 22 and supplies the servo motor 11 with a control signal through a slip ring 13. A signal from the acceleration sensor 20 is transmitted to a measuring apparatus via a slip ring 18, a signal tapping apparatus 17 and a slip ring 16 to collect specified data. An operational amplifier is inserted in this signal tapping circuit to eliminate intermixed noise in the output signal.
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