噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2014年
2期
46-49
,共4页
振动与波%主动减振%自适应控制%跟踪滤波
振動與波%主動減振%自適應控製%跟蹤濾波
진동여파%주동감진%자괄응공제%근종려파
vibration and wave%active vibration control%adaptive control%tracking filtering
通过试验研究主动控制振动传递的效果。采用频率在线估计和跟踪滤波的自适应控制方法，将以分量型式抑制谐波干扰引起的振动。在控制过程中，通过递推计算进行频率估计，用中心频率随动的带通滤波器进行信号跟踪，并在基本LMS方法的基础上形成自适应控制器。建立了多点控制试验台，实施跟踪滤波的自适应对消。结果表明：自适应方法能够很好地抑制谐波干扰的影响；对于多点隔振，控制通道之间存在强烈耦合作用，整体隔振效果与被控结构的振动模态相关。
通過試驗研究主動控製振動傳遞的效果。採用頻率在線估計和跟蹤濾波的自適應控製方法，將以分量型式抑製諧波榦擾引起的振動。在控製過程中，通過遞推計算進行頻率估計，用中心頻率隨動的帶通濾波器進行信號跟蹤，併在基本LMS方法的基礎上形成自適應控製器。建立瞭多點控製試驗檯，實施跟蹤濾波的自適應對消。結果錶明：自適應方法能夠很好地抑製諧波榦擾的影響；對于多點隔振，控製通道之間存在彊烈耦閤作用，整體隔振效果與被控結構的振動模態相關。
통과시험연구주동공제진동전체적효과。채용빈솔재선고계화근종려파적자괄응공제방법，장이분량형식억제해파간우인기적진동。재공제과정중，통과체추계산진행빈솔고계，용중심빈솔수동적대통려파기진행신호근종，병재기본LMS방법적기출상형성자괄응공제기。건립료다점공제시험태，실시근종려파적자괄응대소。결과표명：자괄응방법능구흔호지억제해파간우적영향；대우다점격진，공제통도지간존재강렬우합작용，정체격진효과여피공결구적진동모태상관。
An adaptive control algorithm, including on- line frequency estimation and track filtering, is studied experimentally and applied to the active vibration control. The online frequency estimation is done through the recurrence algorithm. The central frequencies of the tracking filters are adjusted according to the frequency estimation so that the filters can track signal components efficiently. And the adaptive controller is formed based on the LMS method. The experimental system of multi-point testing bench is built to study the adaptive control algorithm. The adaptive elimination of the track filtering wave is realized. The test result shows that the adaptive control algorithm can suppress the influence of the harmonic wave disturbance, it has strong coupling effect between multi-point vibration isolation and control channel, and the vibration isolation effect is related to the vibration modes of the structure.
