Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 1997.07a
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- Pages.193-199
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- 1997
Active silencer using switching method in vaccum cleaner
청소기 소음원에 적용한 스위칭 방식 능동 소음기
Abstract
Until now, environmental problem has become more and more serious, and acoustic noise is one of environmental pollutions. For many years, ANC(Active Noise Control) has been made to reduce this noise. In this paper, active silencer using switching method is studied. This silencer is composed of single-phase full bridge inverter to drive cancelling loudspeaker. The inverter is controlled to reduce noise by ramp comparison control method. At the vacuum cleaner, noise control with FFCS(Feed-Forward Control Structure) is applied and geometric arrangement is replaced to avoid unstability of FFCS.
Keywords