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Proceedings Paper

Vibration control of flexible structures using self-sensing actuators
Author(s): Farzad Pourboghrat; Harin Pongpairoj; Il-Jin Youn; Ramesh Balasubramaniam; Raghuram Radhakrishnan; Morteza Daneshdoost; Mohammed R. Sayeh
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Paper Abstract

In this paper, the design and implementation of smart actuators for active vibration control of mechanical systems are considered. The proposed smart actuator is composed of one or several layers of piezoelectric materials that works both as a sensor and an actuator, in vibration control applications. An adaptive technique is developed for estimating the unknown equivalent capacitance of the piezoelectric material, which would be used for separating the effect of actuation from the measured (sensed) signal due to the strain in the material. This algorithm can be implemented in real time on a digital signal processor (DSP), allowing for the development of a DSP-based adaptive self-sensing actuator. This self-sensing actuator is then used in the vibration control of flexible structures. The vibration control system includes a power electronic amplifier, a data acquisition system, and a DSP for digital control implementation. A simple PID control strategy is employed for vibration reduction and motion control of cantilever beams using the proposed self-sensing actuators. Simulations and preliminary experiments show good results.

Paper Details

Date Published: 9 June 1999
PDF: 10 pages
Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); doi: 10.1117/12.350770
Show Author Affiliations
Farzad Pourboghrat, Southern Illinois Univ. (United States)
Harin Pongpairoj, Southern Illinois Univ. (United States)
Il-Jin Youn, Southern Illinois Univ. (United States)
Ramesh Balasubramaniam, Southern Illinois Univ. (United States)
Raghuram Radhakrishnan, Southern Illinois Univ. (United States)
Morteza Daneshdoost, Southern Illinois Univ. (United States)
Mohammed R. Sayeh, Southern Illinois Univ. (United States)


Published in SPIE Proceedings Vol. 3668:
Smart Structures and Materials 1999: Smart Structures and Integrated Systems
Norman M. Wereley, Editor(s)

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