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Thesis: Enhancement of the Control Performance of a Mechatronic Micropositioning Control System Using Piezoelectric Actuators

Enhancement of the control performance of a mechatronic micropositioning control system using piezoelectric actuators (Cairo, 2013)

Abstract:
Pieoelectric actuators are used in a wide variety of precise Nano-positioning applications. Due to the effect of the nonlinear hysteresis, the positioning accuracy of the piezoelectric actuators is limited. Hence, developing a high precise control scheme is considered a great challenge. It is desirable to take the effect of nonlinear hysteresis into consideration for enhancing the tracking positioning accuracy of the piezoelectric actuators. In this thesis Robust μ-Synthesis and Hybrid Fuzzy Robust control schemes have been developed for a positioning system driven by piezoelectric actuator. Moreover the Hybrid Fuzzy Robust Controller gives better tracking error than the Robust μ- Synthesis controller. The effectiveness of the proposed control schemes has been validated.

Keywords:
Precision positioning, robust control, fuzzy control, hysteresis, piezoelectric actuator.

By: Mostafa Abdel Aziz

Superviosed by: Prof.Magdy M.AbdelHameed

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