Vibration/noise control system for vehicles

U.S. Patent Number: 5386372

Abstract: A plurality of pulse signals (trigger signals) responsive to driving of a power plant are directly supplied to respective adaptive control circuits each having an adaptive digital filter for controlling components of periodic or semi-periodic vibrations and noises ascribed to related component parts of a vibration/noise source. Further, the adaptive control is performed while varying a sampling frequency in response to changes in parameters of operating conditions of the power plant. Optionally, a control signal from the adaptive digital filter is corrected for gain. Further, periodic signal-eliminating means is provided for determining a transfer characteristic of a system to which the adaptive control is applied, based on a residual component signal from the periodic signal-eliminating means, a random signal having a low amplitude level, etc.

Inventors: Kobayashi; Toshiaki (Wako, JP), Ueyama; Masaki (Wako, JP), Yokoyama; Toshio (Wako, JP), Nozawa; Yasuji (Wako, JP), Ozawa; Hidetaka (Wako, JP)

Assignee: Honda Giken Kogyo Kabushiki Kaisha (Tokyo, JP)

Application Number: 08/029,909

Issued: 1995-01-31

Expired: 2007-01-31

Classes: 700/280

Field of search: 364/572-581 244/17.1,17.13

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