| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure excitation force even when an oscillator and a sensor are not attached onto a measured portion. SOLUTION: A vibration generating body 1 is held while surrounded with a measuring jig 8, vibration is applied to the body 1 from a prescribed direction with known excitation force through the jig 8, physical quantities as to the vibration are measured in plural positions on the jig symmetrical on a measured point in the body 1, a transfer function of a vibration system including the jig 8 is found based on a measured result therein and the known excitation force, the body 1 is operated and physical quantities as to the vibration are measured in the plural positions, and the excitation force by the body 1 is found based on a measured result therein and the transfer function.
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