| 摘要 |
PURPOSE:To save power consumption of a servo device, to heighten its performance and to improve vibration resisting characteristics by adding a servo system including a model corresponding to frequency component made by concentrating vibration frequency spectra of various disturbances to prescribed frequencies by a mechanical buffer mechanism in a feedback controlling circuit. CONSTITUTION:A base stand 12 is attached to the outside of the housing 10 of a high-density recording and reproducing device through a spring coil 11 or the mechanical deck 13 on the inside of the case 10 is suspended by spring coils 14, 14. Movement of such a buffer mechanism can be made to a simple sine wave frequency omegad or only its damped vibration. Accordingly, disturbance energy applied to the device can be concentrated on proper vibration frequencies of the buffer mechanism. When a model that responds at a high gain to resonance frequency is put in a feedback loop, a servo system that makes one-round loop gain maximum to disturbance can be constructed.
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