Title

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

Document Type

Conference Proceeding

Publisher

ACTA Press

Faculty

Computing, Health and Science

School

Computer and Information Science

RAS ID

1722

Comments

This article was originally published as: 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. Original article 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.