| 摘要 |
PROBLEM TO BE SOLVED: To properly estimate a soil compaction state even when the number of peak vibrations is varied. SOLUTION: A soil compaction control device 1 is constituted of an accelerometer 2 for measuring vertical acceleration of a vibration body provided to a rolling machine during the rolling. an FFT analyzer 3 as an analyzing means for obtaining an acceleration spectrum from acceleration data measured by the accelerometer 2 and an operational circuit 4 obtaining the geometrical mean A by integrating the acceleration spectrum with a first frequency band including primary estimated peak vibrations, at the same time, obtaining the geometrical mean B by integrating the acceleration spectrum with a second frequency including secondary estimated peak vibrations and tertiary estimated peak vibrations and used as an operational means for computing a peak ratio by dividing the geometrical mean B with the geometrical mean A.
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