| 摘要 |
PROBLEM TO BE SOLVED: To calculate the presumed external disturbance using precise parameters with the vibration tester. SOLUTION: The vibration tester 80 is provided with: the servo-valve 6; the servo-vibration excitor 1 for exiting the vibration of a test sample; the estimation external disturbance compensation device 5 for estimating and compensating the external disturbance activating on the servo-vibration excitor, the controller 2 excites and controls the servo-exciter; the pressure detection means 16a and 16b for detecting the pressures in the 2 spaces 1g and 1h in the cylinder 1d of the servo-vibration excitor separated by the piston 1b of the servo-vibration excitor; and the acceleration detection means 7 for detecting the acceleration activating on the servo-vibration excitor. The estimated external disturbance compensation means compensates the disturbance activating on the servo-vibration excitor from the pressure detected by the pressure detection means and the acceleration detected by the acceleration detection means. COPYRIGHT: (C)2006,JPO&NCIPI
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