초록 ▼

A positive vibration suppression apparatus is disclosed, which suppresses vibrations of a building caused by earthquakes or winds by applying a control force to the building. The apparatus comprises a weight provided on the top of the building in a suspended form to reduce friction and an actuator p

A positive vibration suppression apparatus is disclosed, which suppresses vibrations of a building caused by earthquakes or winds by applying a control force to the building. The apparatus comprises a weight provided on the top of the building in a suspended form to reduce friction and an actuator provided between the weight and the building. The vibration suppression apparatus is controlled through sensing of the vibrations of the building and weight by a sensor, whereas for excessive vibrations of the building the vibrations of the weight are made close to the vibrations of the building to protect the apparatus, because the capacity of the vibration suppression apparatus is limited. Further, in an oil hydraulic system for obtaining a great control force, small and large size oil hydraulic pumps connected to respective small and large size electric motors and an accumulator are provided in parallel, so that the apparatus is warmed up at all time for oil hydraulic control with low power consumption. Two or more vibration suppression apparatuses are controlled at the same time according to the shape of the building to cope with torsional and secondary vibration components.

대표청구항 ▼

Apparatus for suppressing vibrations of a building, comprising: a source of electric energy; a first high capacity electric motor connected to said source of electric energy; a first high capacity hydraulic pump drivingly connected to said first electric motor; a pressure regulator valve connected t

Apparatus for suppressing vibrations of a building, comprising: a source of electric energy; a first high capacity electric motor connected to said source of electric energy; a first high capacity hydraulic pump drivingly connected to said first electric motor; a pressure regulator valve connected to said first hydraulic pump; a second low capacity electric motor connected to said source of electric energy with said first electric motor; a second low capacity hydraulic pump drivingly connected to said second electric motor; an hydraulic cylinder and piston; an hydraulic servo valve connected to said hydraulic cylinder, said first and second hydraulic pumps being connected in parallel to said hydraulic serve valve; an hydraulic fluid accumulator connected to said hydraulic servo valve; means for pressurizing and recirculating hydraulic fluid in said hydraulic fluid accumulator by said second hydraulic pump; a source of hydraulic fluid connected to said first hydraulic pump; a shiftable mass; said hydraulic cylinder being connected to said shiftable mass; said piston being connected to said building; means to sense vibration of said building and to generate a signal responsive thereto; means to sense vibration of said shiftable mass and to generate a signal responsive thereto; means to compare said signals and to generate signals responsive thereto to actuate said hydraulic servo valve, to actuate said accumulator, to actuate said hydraulic cylinder and piston to shift said mass, to actuate said first electric motor and said first hydraulic pump, and to actuate said pressure regulator valve to connect said first hydraulic pump to said hydraulic servo valve.