1. Piezoelectric Patches Overview
Dr. Hassan Hariri
Pr. Yves Bernard & Pr. Adel Razek
GeePs: Génie électrique et électronique de Paris
http://www.geeps.centralesupelec.fr/
Email: haririhas@gmail.com

2. Copyright Hassan Hariri 2016
The output voltage is
determined by
Piezoelectric Transformers

3. Copyright Hassan Hariri 2016
Piezoelectric Transformers

4. Copyright Hassan Hariri 2016
Piezoelectric patches damage
detection

5. Copyright Hassan Hariri 2016
Active control of flexible structures
A schematic diagram for active control using two-non-collocated patches for a
flexible structure subjected to unnecessary disturbance

6. Copyright Hassan Hariri 2016
Active control of flexible structures
The model can be used to control the structure by transforming the finite element
model in nodal variables into modal model and then into state space. Therefore our
system is represented by the state space equation. Then controller can be designed
to reject external disturbances for example (no useful vibrations) or in order to
maintain a desired.

7. Copyright Hassan Hariri 2016
Active control of flexible structures
Schematic blocks of transfer functions

8. Copyright Hassan Hariri 2016
Passive damping vibration of thin
beams and plates

9. Copyright Hassan Hariri 2016
Where the electrical impedance of the circuit is written as
Passive damping vibration of thin
beams and plates

10. Copyright Hassan Hariri 2016
Passive damping vibration of thin
beams and plates