DSP - based Digital Control of Ultra-low Frequency Vibration Isolators

Authors

Chunnong Zhao, Edith Cowan University
Dongguang Li, Edith Cowan University
Anthony Craig Watson, Edith Cowan University

Document Type

Conference Proceeding

Publisher

ACTA Press

Faculty

Faculty of Computing, Health and Science

School

School of Computer and Information Science

RAS ID

1722

Comments

Zhao, C., Li, D., & Watson, A. C. (2003). DSP - based digital control of ultra-low frequency vibration isolators. Proceedings of IASTED International Conference on Intelligent Systems and Control. (pp. 1-3). Calgary, Canada: ACTA Press. Available here

Abstract

This paper describes the design and implementation of a DSP-based fully digital-controlled ultra-low frequency vibration isolator. The problem was suggested by experiments to direct detection of gravitational wave using laser interferometers. The experiment requires high order of vibration isolation from ground seismic noise and nano-meter (RMS) order of stability. The shadow sensor (LED/Photodiode) and coil/magnet were used as the transducer and actuator. The digital PID control was designed and tested based on a DSP board in a PC and LabView software package.