| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for reducing vibration capable of controlling, with respect to a signal of high-frequency area that exceeds the Nyquist frequency for a digital controller, without generating errors, and is capable of reducing the vibration of the control object. SOLUTION: The vibration reducing device for reducing the vibration for the control object by a controller 101, includes an input side bandpass filter 104 for passing the vibration of the passband among the vibration detected by a vibrational state detection means 25, that does not include the frequency multiplying natural number of the Nyquist frequency of the controller, and whose passband width is below the frequency width, ranging from the Nyquist frequency to the sampling frequency; an A/D conversion means 102 for converting its passed analog signal to a digital signal; a D/A conversion means 103 for converting the feedback signal, determined from its digital signal, from the digital signal to the analog signal; and an actuator 10 for oscillating the control object by the analog signal converted. COPYRIGHT: (C)2008,JPO&INPIT |
