The Application of Negative Feedback to Active Control in Vibration Isolation

Abstract:

Ultralow frequency vibration tables can easily be imposed external vibration interferences when they work. These interferences result to output distortion and the reduction of the calibration precision. A system with active vibration isolation control can effectively reduce the measure distortion. The principle of active control is the negative feedback method in vibration isolation. A composite feedback system was introduced that based on several different feedback variables. The frequency characteristic of the system was analysed. We simulated MATLAB at 0.1Hz and 1Hz. It is obvious that a better vibration isolation is effective by composite feedback system based on negative feedback method.

• Periodical: Applied Mechanics and Materials (Volumes 511-512)
• Pages: 1068-1071
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.511-512.1068
• Online since: February 2014
• Authors: Tian Li She*, Feng Gao, Shu Lin Ma
• Keywords: Active Vibration Isolation, Composite Feedback, Negative Feedback Control, Passive Vibration Isolation

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