Comparison of analog and digital strategies for automatic vibration control of lightweight space structures

Suk-Yoon Hong; Vasundara V. Varadan; Vijay K. Varadan

doi:10.1117/12.46589

1 October 1991 Comparison of analog and digital strategies for automatic vibration control of lightweight space structures

Suk-Yoon Hong, Vasundara V. Varadan, Vijay K. Varadan

Author Affiliations +

Proceedings Volume 1489, Structures Sensing and Control; (1991) https://doi.org/10.1117/12.46589
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

A series of structural vibration control experiments and related theory are developed to check the effectiveness of analog and digital control system with piezoelectric material sensors and actuators. Velocity feedback analog control has been tried for the cantilever beam with PZT (lead-zirconate-titanate) wafer sensors and actuators. To improve the control system, steady- state quadratic optimal control algorithm using a digital micro-computer has been used. To apply optimal control algorithms, signals sensed by partially distributed sensors were converted to point concept signals like those from conventional displacement or velocity sensors. Actuating voltage signals were then synthesized from point force output signals. This paper presents excellent results for structural vibration control using both analog and digital systems.

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Suk-Yoon Hong, Vasundara V. Varadan, and Vijay K. Varadan "Comparison of analog and digital strategies for automatic vibration control of lightweight space structures", Proc. SPIE 1489, Structures Sensing and Control, (1 October 1991); https://doi.org/10.1117/12.46589

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