Title:
振動低減装置
Document Type and Number:
Japanese Patent JP5092604
Kind Code:
B2
Abstract:
A vibration reducing device that reduces the vibration of a control object includes a digital controller. A vibration state detection device detects the vibration of the control object and generates an analog signal of the vibration of the control object. An input-side bandpass filter has a passband that is narrower than a frequency range from a Nyquist frequency to a sampling frequency of the digital controller, and that contains no frequencies that are an integer multiple of the Nyquist frequency of the digital controller. The input-side bandpass filter allows a part of the analog signal that falls within the passband from the analog signal generated by the vibration state detection device to pass. An A/D conversion device converts the analog signal that has passed through the input-side bandpass filter into a digital signal. A D/A conversion device converts a digital feedback control signal, determined by the digital controller on the basis of the digital signal converted by the A/D conversion device, into an analog feedback control signal. An actuator applies vibration to the control object on the basis of the analog feedback control signal converted by the D/A conversion device.
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Inventors:
Yusuke Sato
Nami Yoshimi
Kazuhiro Fujikane
Nami Yoshimi
Kazuhiro Fujikane
Application Number:
JP2007193112A
Publication Date:
December 05, 2012
Filing Date:
July 25, 2007
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
G05D19/02; F02M61/16; F16F15/02; G05B13/02
Domestic Patent References:
| JP2000047701A | ||||
| JP8200179A |
Attorney, Agent or Firm:
Masaki Goto
Masahiro Fujii
Masaaki Iida
Yasunari Mita
Masahiro Fujii
Masaaki Iida
Yasunari Mita