ACTIVE VIBRATIONS CONTROLLER AND METHOD FOR CONTROL OF ACTIVE VIBRATIONS

• Main Authors: NISHIMURA KOICHI, KANEUCHI TAKESHI, MATSUI TOSHIHITO
• Format: Patent
• Language: English; Japanese
• Published: 08.02.2018
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; BUILDING; CEILINGS; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; INSULATION OR OTHER PROTECTION OF BUILDINGS; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; ROOFS; SOUND-PRODUCING DEVICES; WALLS, e.g. PARTITIONS

PROBLEM TO BE SOLVED: To provide an active vibrations controller and a method for controlling active vibrations which can desirably achieve reduction of noise which propagates from the outside to the inside of a building and are relatively simple and economically efficient.SOLUTION: The present invention includes a phase adjusting unit having an analog circuit 12 which can be set in advance so that a phase difference wτ between the phase of a vibration acceleration A×emeasured by a vibration acceleration measuring unit 11 and the phase of an adjusted signal input to a vibrator 14 will be in the range of -π/2<wτ<π/2.SELECTED DRAWING: Figure 1 【課題】屋外から屋内へ伝播する騒音の低減を良好に実現できると共に、比較的シンプルで経済性の高い能動振動制御装置、及び能動振動制御方法を提供する。【解決手段】振動加速度計測部１１にて計測される振動加速度Ａ×ｅiwtの位相と加振器１４へ入力される調整信号の位相との位相差ｗτを、−π／２＜ｗτ＜π／２の範囲に調整するように事前に設定自在なアナログ回路１２から成る位相調整部を備える。【選択図】図１