Title:
ACTIVE CONTROL METHOD FOR GROUND LOW FREQUENCY VIBRATION
Document Type and Number:
Japanese Patent JP2000250637
Kind Code:
A
Abstract:
To reduce the transmission of ground low frequency vibrations caused by the construction machines used for the foundation work, etc., to the circumference.
An additional vibration source S2 which generates the dominant large sine wave vibrations having the phases opposite to the dominant sine wave components of a vibration source S1 is placed at a position near the source S1 that is set on the ground and generates the low frequency vibrations in its operation mode. Then the source S2 is operated synchronously with the source S1 to decrease the vibration components which are propagated the peripheral ground.
Inventors:
UCHIDA SUENOBU
MATSUSHIMA KENICHI
ISHIDA YASUAKI
TSUKADA ISAO
MATSUSHIMA KENICHI
ISHIDA YASUAKI
TSUKADA ISAO
Application Number:
JP5217299A
Publication Date:
September 14, 2000
Filing Date:
March 01, 1999
Export Citation:
Assignee:
TOBISHIMA CONSTRUCT CO LTD
International Classes:
E02D7/18; G05D19/02; (IPC1-7): G05D19/02; E02D7/18
Attorney, Agent or Firm:
Tetsuro Sunaba