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    • 15. 发明授权
    • Vibration reducing device
    • 减振装置
    • US07715949B2
    • 2010-05-11
    • US11976402
    • 2007-10-24
    • Yusuke SatoYoshimi NunomeKazuhiro Fujikane
    • Yusuke SatoYoshimi NunomeKazuhiro Fujikane
    • G06F19/00G21C17/00F16F7/10
    • F16F15/02F02M61/14F02M2200/09F02M2200/21F02M2200/302
    • 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.
    • 减少控制对象的振动的减振装置包括数字控制器。 振动状态检测装置检测控制对象的振动并产生控制对象的振动的模拟信号。 输入侧带通滤波器具有比从奈奎斯特频率到数字控制器的采样频率的频率范围窄的通带,并且不包含数字控制器的奈奎斯特频率的整数倍的频率。 输入侧带通滤波器允许从由振动状态检测装置产生的模拟信号落入通带内的模拟信号的一部分通过。 A / D转换装置将通过输入侧带通滤波器的模拟信号转换为数字信号。 D / A转换装置将由数字控制器确定的数字反馈控制信号基于由A / D转换装置转换的数字信号转换为模拟反馈控制信号。 执行器根据由D / A转换装置转换的模拟反馈控制信号对控制对象施加振动。