JPH031686B

• Main Authors: FURUISHI YOSHIO, KITORA YOSHIHISA
• Format: Patent
• Language: English
• Published: 11.01.1991
• Subjects: BLASTING; BUILDING; CEILINGS; CONTROLLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSULATION OR OTHER PROTECTION OF BUILDINGS; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; PHYSICS; REGULATING; ROOFS; SHOCK-ABSORBERS; SPRINGS; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; THERMAL INSULATION IN GENERAL; WALLS, e.g. PARTITIONS; WEAPONS

PURPOSE:To reduce vibrations in two axial directions which are orthognal together in a horizontal plane and torsional vibrations in a building, by arranging three additional weight driving devices having their drive axes forming a triangle, and as well by providing a control circuit for driving the additinal weights in accordance with vibration in the building. CONSTITUTION:Three additional weight driving devices 4a, 4b, 4c are secured so that the drive-directional axes of three additional weight driving devices 4a, 4b, 4c form a triangle. A control circuit delivers a predetermined displacement value, and a predetermined speed value to control an acuator 20, thereby the control force of the additional weight drive devices 4a, 4b, 4c are generated.