| 摘要 |
PROBLEM TO BE SOLVED: To solve problems in the calibration of an existing acceleration sensor that, in the existing method, the acceleration sensor is fixed to a one-dimensional vibration table and motion of the vibration table is measured with a laser interferometer, but calibration is incorrect because of the presence of parasitic lateral vibration, and in a method of striking one missile against a metal rod, the frequency band of shock acceleration is too narrow. SOLUTION: A plurality of missiles 3 to be struck against a first end surface 2 of the metal rod 1 are arranged, each launcher 11 is operated with a valve on-off control device 15 for the specified time intervals, and the frequency band of shock acceleration generating inside the metal rod 1 is controlled. The shock acceleration is measured with an acceleration sensor 23 which is a correction target installed on a second end surface 22, output of the acceleration sensor 23 is calculated with the measured value, the output of the laser interferometer 24, or an output signal of a strain gauge 25 stuck on the side surface of the metal rod 1, and calibration is performed by comparing both data. Use of a plurality of strain gauges is allowable and correction with a signal of the laser interferometer is also possible. COPYRIGHT: (C)2004,JPO
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