1. An adaptive PID-like controller for vibration suppression of piezo-actuated flexible beams.
- Author
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Sangpet, Teerawat, Kuntanapreeda, Suwat, and Schmidt, Rüdiger
- Subjects
- *
PID controllers , *VIBRATION (Mechanics) , *PIEZOELECTRIC actuators , *FLEXIBLE structures , *LYAPUNOV functions - Abstract
Flexible structures have been increasingly utilized in many applications because of their light-weight and low production cost. However, being flexible leads to vibration problems. Vibration suppression of flexible structures is a challenging control problem because the structures are actually infinite-dimensional systems. In this paper, an adaptive control scheme is proposed for the vibration suppression of a piezo-actuated flexible beam. The controller makes use of the configuration of the prominent proportional-integral-derivative controller and is derived using an infinite-dimensional Lyapunov method. In contrast to existing schemes, the present scheme does not require any approximated finite-dimensional model of the beam. Thus, the stability of the closed loop system is guaranteed for all vibration modes. Experimental results have illustrated the feasibility of the proposed control scheme. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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